./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8 --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 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --- 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-2329fc7 [2022-12-13 16:20:23,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:20:23,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:20:23,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:20:23,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:20:23,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:20:23,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:20:23,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:20:23,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:20:23,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:20:23,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:20:23,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:20:23,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:20:23,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:20:23,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:20:23,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:20:23,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:20:23,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:20:23,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:20:23,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:20:23,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:20:23,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:20:23,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:20:23,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:20:23,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:20:23,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:20:23,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:20:23,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:20:23,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:20:23,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:20:23,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:20:23,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:20:23,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:20:23,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:20:23,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:20:23,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:20:23,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:20:23,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:20:23,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:20:23,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:20:23,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:20:23,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:20:23,720 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:20:23,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:20:23,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:20:23,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:20:23,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:20:23,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:20:23,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:20:23,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:20:23,722 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:20:23,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:20:23,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:20:23,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:20:23,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:20:23,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:20:23,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:20:23,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:20:23,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:20:23,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:20:23,744 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:20:23,745 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 [2022-12-13 16:20:23,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:20:23,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:20:23,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:20:23,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:20:23,923 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:20:23,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-12-13 16:20:26,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:20:26,616 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:20:26,616 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-12-13 16:20:26,621 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/data/3d2424c7e/fc350359749e44a4ad38b5c5a3ffb1e0/FLAG25a0eff65 [2022-12-13 16:20:26,631 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/data/3d2424c7e/fc350359749e44a4ad38b5c5a3ffb1e0 [2022-12-13 16:20:26,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:20:26,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:20:26,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:20:26,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:20:26,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:20:26,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd2c181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26, skipping insertion in model container [2022-12-13 16:20:26,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:20:26,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:20:26,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:20:26,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:20:26,787 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:20:26,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:20:26,795 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-12-13 16:20:26,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:20:26,812 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:20:26,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:20:26,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:20:26,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:20:26,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:20:26,832 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-12-13 16:20:26,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:20:26,850 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:20:26,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26 WrapperNode [2022-12-13 16:20:26,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:20:26,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:20:26,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:20:26,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:20:26,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,887 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 128 [2022-12-13 16:20:26,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:20:26,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:20:26,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:20:26,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:20:26,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:20:26,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:20:26,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:20:26,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:20:26,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (1/1) ... [2022-12-13 16:20:26,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:20:26,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:26,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:20:26,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:20:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:20:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:20:26,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:20:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:20:26,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:20:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:20:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:20:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:20:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:20:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:20:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:20:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:20:26,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:20:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:20:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:20:26,985 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:20:27,068 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:20:27,070 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:20:27,238 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:20:27,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:20:27,309 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 16:20:27,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:20:27 BoogieIcfgContainer [2022-12-13 16:20:27,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:20:27,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:20:27,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:20:27,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:20:27,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:20:26" (1/3) ... [2022-12-13 16:20:27,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36364378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:20:27, skipping insertion in model container [2022-12-13 16:20:27,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:20:26" (2/3) ... [2022-12-13 16:20:27,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36364378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:20:27, skipping insertion in model container [2022-12-13 16:20:27,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:20:27" (3/3) ... [2022-12-13 16:20:27,321 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-12-13 16:20:27,329 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:20:27,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:20:27,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:20:27,339 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:20:27,383 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 16:20:27,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 120 transitions, 256 flow [2022-12-13 16:20:27,458 INFO L130 PetriNetUnfolder]: 9/118 cut-off events. [2022-12-13 16:20:27,459 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:20:27,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 9/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-12-13 16:20:27,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 120 transitions, 256 flow [2022-12-13 16:20:27,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 109 transitions, 230 flow [2022-12-13 16:20:27,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:20:27,482 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 109 transitions, 230 flow [2022-12-13 16:20:27,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 109 transitions, 230 flow [2022-12-13 16:20:27,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 230 flow [2022-12-13 16:20:27,517 INFO L130 PetriNetUnfolder]: 9/109 cut-off events. [2022-12-13 16:20:27,517 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:20:27,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 9/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-12-13 16:20:27,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 368 [2022-12-13 16:20:30,181 INFO L134 LiptonReduction]: Checked pairs total: 393 [2022-12-13 16:20:30,181 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-12-13 16:20:30,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:20:30,196 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;@31046a09, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:20:30,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 16:20:30,200 INFO L130 PetriNetUnfolder]: 3/14 cut-off events. [2022-12-13 16:20:30,200 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:20:30,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:30,200 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:30,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:30,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1000553632, now seen corresponding path program 1 times [2022-12-13 16:20:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:30,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100089289] [2022-12-13 16:20:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:30,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:30,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:30,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100089289] [2022-12-13 16:20:30,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100089289] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:20:30,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:20:30,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:20:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659271217] [2022-12-13 16:20:30,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:20:30,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:20:30,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:30,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:20:30,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:20:30,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 232 [2022-12-13 16:20:30,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2022-12-13 16:20:30,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:30,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 232 [2022-12-13 16:20:30,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:30,527 INFO L130 PetriNetUnfolder]: 38/71 cut-off events. [2022-12-13 16:20:30,527 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 16:20:30,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 71 events. 38/71 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 134 event pairs, 9 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 100. Up to 37 conditions per place. [2022-12-13 16:20:30,528 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 19 selfloop transitions, 2 changer transitions 2/23 dead transitions. [2022-12-13 16:20:30,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 23 transitions, 110 flow [2022-12-13 16:20:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:20:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:20:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2022-12-13 16:20:30,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4870689655172414 [2022-12-13 16:20:30,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2022-12-13 16:20:30,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2022-12-13 16:20:30,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:30,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2022-12-13 16:20:30,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2022-12-13 16:20:30,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 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) [2022-12-13 16:20:30,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 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) [2022-12-13 16:20:30,550 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 42 flow. Second operand 3 states and 339 transitions. [2022-12-13 16:20:30,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 23 transitions, 110 flow [2022-12-13 16:20:30,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 23 transitions, 98 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 16:20:30,554 INFO L231 Difference]: Finished difference. Result has 18 places, 16 transitions, 46 flow [2022-12-13 16:20:30,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2022-12-13 16:20:30,559 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2022-12-13 16:20:30,559 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 46 flow [2022-12-13 16:20:30,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2022-12-13 16:20:30,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:30,560 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:30,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:20:30,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash 21879675, now seen corresponding path program 1 times [2022-12-13 16:20:30,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:30,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151456199] [2022-12-13 16:20:30,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:30,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:30,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151456199] [2022-12-13 16:20:30,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151456199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:20:30,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:20:30,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:20:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617000755] [2022-12-13 16:20:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:20:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:20:30,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:20:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:20:30,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2022-12-13 16:20:30,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2022-12-13 16:20:30,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:30,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2022-12-13 16:20:30,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:30,758 INFO L130 PetriNetUnfolder]: 52/102 cut-off events. [2022-12-13 16:20:30,759 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 16:20:30,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 102 events. 52/102 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 256 event pairs, 17 based on Foata normal form. 6/91 useless extension candidates. Maximal degree in co-relation 135. Up to 74 conditions per place. [2022-12-13 16:20:30,759 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 18 selfloop transitions, 2 changer transitions 5/25 dead transitions. [2022-12-13 16:20:30,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 25 transitions, 117 flow [2022-12-13 16:20:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:20:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:20:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2022-12-13 16:20:30,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2022-12-13 16:20:30,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2022-12-13 16:20:30,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2022-12-13 16:20:30,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:30,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2022-12-13 16:20:30,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2022-12-13 16:20:30,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 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) [2022-12-13 16:20:30,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 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) [2022-12-13 16:20:30,764 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 46 flow. Second operand 3 states and 328 transitions. [2022-12-13 16:20:30,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 25 transitions, 117 flow [2022-12-13 16:20:30,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 25 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:20:30,765 INFO L231 Difference]: Finished difference. Result has 20 places, 17 transitions, 56 flow [2022-12-13 16:20:30,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2022-12-13 16:20:30,765 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2022-12-13 16:20:30,765 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 56 flow [2022-12-13 16:20:30,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2022-12-13 16:20:30,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:30,766 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:30,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:20:30,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:30,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash 451000179, now seen corresponding path program 1 times [2022-12-13 16:20:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:30,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333608171] [2022-12-13 16:20:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:20:30,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:30,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333608171] [2022-12-13 16:20:30,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333608171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:20:30,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:20:30,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:20:30,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748824748] [2022-12-13 16:20:30,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:20:30,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:20:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:30,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:20:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:20:30,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2022-12-13 16:20:30,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2022-12-13 16:20:30,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:30,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2022-12-13 16:20:30,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:30,945 INFO L130 PetriNetUnfolder]: 61/130 cut-off events. [2022-12-13 16:20:30,945 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-13 16:20:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 130 events. 61/130 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 367 event pairs, 44 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 212. Up to 103 conditions per place. [2022-12-13 16:20:30,947 INFO L137 encePairwiseOnDemand]: 228/232 looper letters, 16 selfloop transitions, 2 changer transitions 10/28 dead transitions. [2022-12-13 16:20:30,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 138 flow [2022-12-13 16:20:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:20:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:20:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2022-12-13 16:20:30,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644396551724138 [2022-12-13 16:20:30,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 431 transitions. [2022-12-13 16:20:30,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 431 transitions. [2022-12-13 16:20:30,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:30,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 431 transitions. [2022-12-13 16:20:30,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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) [2022-12-13 16:20:30,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 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) [2022-12-13 16:20:30,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 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) [2022-12-13 16:20:30,952 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 56 flow. Second operand 4 states and 431 transitions. [2022-12-13 16:20:30,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 138 flow [2022-12-13 16:20:30,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:20:30,953 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 68 flow [2022-12-13 16:20:30,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2022-12-13 16:20:30,954 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2022-12-13 16:20:30,954 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 68 flow [2022-12-13 16:20:30,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2022-12-13 16:20:30,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:30,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:30,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:20:30,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash 944723328, now seen corresponding path program 1 times [2022-12-13 16:20:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:30,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646896720] [2022-12-13 16:20:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:31,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:31,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646896720] [2022-12-13 16:20:31,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646896720] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:31,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376445441] [2022-12-13 16:20:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:31,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:31,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:31,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:31,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:20:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:31,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 16:20:31,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:31,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 16:20:31,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:20:31,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:20:31,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:20:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:31,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:31,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:20:31,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-12-13 16:20:31,834 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-13 16:20:31,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 300 treesize of output 275 [2022-12-13 16:20:31,849 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 16:20:31,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 268 treesize of output 220 [2022-12-13 16:20:31,861 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 16:20:31,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 196 [2022-12-13 16:20:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:31,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376445441] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:31,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:31,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2022-12-13 16:20:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856925249] [2022-12-13 16:20:31,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:31,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 16:20:31,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 16:20:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=207, Unknown=1, NotChecked=0, Total=272 [2022-12-13 16:20:32,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 232 [2022-12-13 16:20:32,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 68 flow. Second operand has 17 states, 17 states have (on average 71.05882352941177) internal successors, (1208), 17 states have internal predecessors, (1208), 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) [2022-12-13 16:20:32,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:32,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 232 [2022-12-13 16:20:32,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:34,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:20:35,123 INFO L130 PetriNetUnfolder]: 337/647 cut-off events. [2022-12-13 16:20:35,123 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2022-12-13 16:20:35,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1597 conditions, 647 events. 337/647 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3132 event pairs, 42 based on Foata normal form. 5/648 useless extension candidates. Maximal degree in co-relation 1581. Up to 135 conditions per place. [2022-12-13 16:20:35,128 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 95 selfloop transitions, 35 changer transitions 31/161 dead transitions. [2022-12-13 16:20:35,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 161 transitions, 815 flow [2022-12-13 16:20:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 16:20:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 16:20:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1610 transitions. [2022-12-13 16:20:35,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.33045977011494254 [2022-12-13 16:20:35,134 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1610 transitions. [2022-12-13 16:20:35,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1610 transitions. [2022-12-13 16:20:35,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:35,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1610 transitions. [2022-12-13 16:20:35,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 76.66666666666667) internal successors, (1610), 21 states have internal predecessors, (1610), 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) [2022-12-13 16:20:35,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 232.0) internal successors, (5104), 22 states have internal predecessors, (5104), 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) [2022-12-13 16:20:35,150 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 232.0) internal successors, (5104), 22 states have internal predecessors, (5104), 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) [2022-12-13 16:20:35,150 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 68 flow. Second operand 21 states and 1610 transitions. [2022-12-13 16:20:35,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 161 transitions, 815 flow [2022-12-13 16:20:35,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 161 transitions, 799 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-12-13 16:20:35,153 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 350 flow [2022-12-13 16:20:35,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=350, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2022-12-13 16:20:35,154 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 32 predicate places. [2022-12-13 16:20:35,154 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 350 flow [2022-12-13 16:20:35,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 71.05882352941177) internal successors, (1208), 17 states have internal predecessors, (1208), 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) [2022-12-13 16:20:35,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:35,154 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:35,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:20:35,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:35,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1068019888, now seen corresponding path program 2 times [2022-12-13 16:20:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:35,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997380843] [2022-12-13 16:20:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:35,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:35,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997380843] [2022-12-13 16:20:35,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997380843] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:35,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945601726] [2022-12-13 16:20:35,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:20:35,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:35,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:35,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:35,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:20:35,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:20:35,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:20:35,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 16:20:35,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:35,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:20:35,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 16:20:36,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:20:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:20:36,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:36,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:20:36,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2022-12-13 16:20:36,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-13 16:20:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:20:36,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945601726] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:36,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:36,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2022-12-13 16:20:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478841532] [2022-12-13 16:20:36,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:36,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 16:20:36,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:36,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 16:20:36,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=170, Unknown=3, NotChecked=0, Total=210 [2022-12-13 16:20:36,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 232 [2022-12-13 16:20:36,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 350 flow. Second operand has 15 states, 15 states have (on average 74.26666666666667) internal successors, (1114), 15 states have internal predecessors, (1114), 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) [2022-12-13 16:20:36,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:36,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 232 [2022-12-13 16:20:36,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:36,657 INFO L130 PetriNetUnfolder]: 449/850 cut-off events. [2022-12-13 16:20:36,657 INFO L131 PetriNetUnfolder]: For 1608/1608 co-relation queries the response was YES. [2022-12-13 16:20:36,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 850 events. 449/850 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4354 event pairs, 105 based on Foata normal form. 5/854 useless extension candidates. Maximal degree in co-relation 2142. Up to 269 conditions per place. [2022-12-13 16:20:36,660 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 60 selfloop transitions, 26 changer transitions 16/102 dead transitions. [2022-12-13 16:20:36,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 760 flow [2022-12-13 16:20:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:20:36,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:20:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2022-12-13 16:20:36,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34099616858237547 [2022-12-13 16:20:36,662 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2022-12-13 16:20:36,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2022-12-13 16:20:36,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:36,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2022-12-13 16:20:36,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 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) [2022-12-13 16:20:36,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 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) [2022-12-13 16:20:36,666 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 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) [2022-12-13 16:20:36,666 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 350 flow. Second operand 9 states and 712 transitions. [2022-12-13 16:20:36,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 760 flow [2022-12-13 16:20:36,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 102 transitions, 720 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-12-13 16:20:36,674 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 450 flow [2022-12-13 16:20:36,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2022-12-13 16:20:36,674 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 40 predicate places. [2022-12-13 16:20:36,674 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 450 flow [2022-12-13 16:20:36,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 74.26666666666667) internal successors, (1114), 15 states have internal predecessors, (1114), 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) [2022-12-13 16:20:36,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:36,675 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:36,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:20:36,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:36,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:36,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1038426747, now seen corresponding path program 3 times [2022-12-13 16:20:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:36,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976575641] [2022-12-13 16:20:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:20:36,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:36,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976575641] [2022-12-13 16:20:36,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976575641] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:36,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271668581] [2022-12-13 16:20:36,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:20:36,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:36,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:36,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:36,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:20:37,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 16:20:37,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:20:37,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:20:37,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:37,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:37,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271668581] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:37,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:37,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2022-12-13 16:20:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356416426] [2022-12-13 16:20:37,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:37,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 16:20:37,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 16:20:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:20:37,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 232 [2022-12-13 16:20:37,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 450 flow. Second operand has 15 states, 15 states have (on average 97.8) internal successors, (1467), 15 states have internal predecessors, (1467), 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) [2022-12-13 16:20:37,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:37,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 232 [2022-12-13 16:20:37,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:37,619 INFO L130 PetriNetUnfolder]: 367/748 cut-off events. [2022-12-13 16:20:37,619 INFO L131 PetriNetUnfolder]: For 2074/2074 co-relation queries the response was YES. [2022-12-13 16:20:37,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 748 events. 367/748 cut-off events. For 2074/2074 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4005 event pairs, 110 based on Foata normal form. 58/806 useless extension candidates. Maximal degree in co-relation 2272. Up to 187 conditions per place. [2022-12-13 16:20:37,624 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 43 selfloop transitions, 15 changer transitions 33/91 dead transitions. [2022-12-13 16:20:37,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 707 flow [2022-12-13 16:20:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:20:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:20:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 923 transitions. [2022-12-13 16:20:37,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4420498084291188 [2022-12-13 16:20:37,626 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 923 transitions. [2022-12-13 16:20:37,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 923 transitions. [2022-12-13 16:20:37,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:37,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 923 transitions. [2022-12-13 16:20:37,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.55555555555556) internal successors, (923), 9 states have internal predecessors, (923), 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) [2022-12-13 16:20:37,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 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) [2022-12-13 16:20:37,630 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 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) [2022-12-13 16:20:37,630 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 450 flow. Second operand 9 states and 923 transitions. [2022-12-13 16:20:37,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 707 flow [2022-12-13 16:20:37,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 653 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-12-13 16:20:37,634 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 329 flow [2022-12-13 16:20:37,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=329, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2022-12-13 16:20:37,635 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 40 predicate places. [2022-12-13 16:20:37,635 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 329 flow [2022-12-13 16:20:37,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.8) internal successors, (1467), 15 states have internal predecessors, (1467), 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) [2022-12-13 16:20:37,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:37,636 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:37,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:20:37,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:37,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1947825572, now seen corresponding path program 4 times [2022-12-13 16:20:37,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:37,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308747663] [2022-12-13 16:20:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308747663] [2022-12-13 16:20:38,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308747663] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289061262] [2022-12-13 16:20:38,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:20:38,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:38,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:38,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:38,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:20:38,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:20:38,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:20:38,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 16:20:38,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:38,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:20:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:20:38,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:38,476 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-13 16:20:38,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-13 16:20:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:20:38,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289061262] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:38,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:38,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 12 [2022-12-13 16:20:38,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030734594] [2022-12-13 16:20:38,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 16:20:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 16:20:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:20:38,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 232 [2022-12-13 16:20:38,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 329 flow. Second operand has 14 states, 14 states have (on average 91.21428571428571) internal successors, (1277), 14 states have internal predecessors, (1277), 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) [2022-12-13 16:20:38,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:38,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 232 [2022-12-13 16:20:38,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:39,446 INFO L130 PetriNetUnfolder]: 637/1237 cut-off events. [2022-12-13 16:20:39,447 INFO L131 PetriNetUnfolder]: For 4199/4199 co-relation queries the response was YES. [2022-12-13 16:20:39,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 1237 events. 637/1237 cut-off events. For 4199/4199 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7145 event pairs, 67 based on Foata normal form. 30/1267 useless extension candidates. Maximal degree in co-relation 1994. Up to 252 conditions per place. [2022-12-13 16:20:39,451 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 81 selfloop transitions, 57 changer transitions 74/212 dead transitions. [2022-12-13 16:20:39,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 212 transitions, 1600 flow [2022-12-13 16:20:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 16:20:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-13 16:20:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2422 transitions. [2022-12-13 16:20:39,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41758620689655174 [2022-12-13 16:20:39,455 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2422 transitions. [2022-12-13 16:20:39,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2422 transitions. [2022-12-13 16:20:39,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:39,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2422 transitions. [2022-12-13 16:20:39,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 96.88) internal successors, (2422), 25 states have internal predecessors, (2422), 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) [2022-12-13 16:20:39,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 232.0) internal successors, (6032), 26 states have internal predecessors, (6032), 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) [2022-12-13 16:20:39,464 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 232.0) internal successors, (6032), 26 states have internal predecessors, (6032), 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) [2022-12-13 16:20:39,464 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 329 flow. Second operand 25 states and 2422 transitions. [2022-12-13 16:20:39,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 212 transitions, 1600 flow [2022-12-13 16:20:39,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 212 transitions, 1394 flow, removed 101 selfloop flow, removed 7 redundant places. [2022-12-13 16:20:39,473 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 839 flow [2022-12-13 16:20:39,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=839, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2022-12-13 16:20:39,473 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 55 predicate places. [2022-12-13 16:20:39,474 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 839 flow [2022-12-13 16:20:39,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 91.21428571428571) internal successors, (1277), 14 states have internal predecessors, (1277), 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) [2022-12-13 16:20:39,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:39,474 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:39,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:20:39,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:39,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:39,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash 755697502, now seen corresponding path program 5 times [2022-12-13 16:20:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:39,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314607608] [2022-12-13 16:20:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:40,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:40,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314607608] [2022-12-13 16:20:40,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314607608] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:40,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648082611] [2022-12-13 16:20:40,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:20:40,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:40,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:40,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:40,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:20:40,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:20:40,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:20:40,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 16:20:40,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:40,423 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 16:20:40,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 16:20:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:40,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:40,556 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-13 16:20:40,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-13 16:20:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:40,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648082611] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:40,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:40,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-12-13 16:20:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617235060] [2022-12-13 16:20:40,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:40,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 16:20:40,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 16:20:40,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-12-13 16:20:41,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2022-12-13 16:20:41,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 839 flow. Second operand has 23 states, 23 states have (on average 88.91304347826087) internal successors, (2045), 23 states have internal predecessors, (2045), 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) [2022-12-13 16:20:41,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:41,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2022-12-13 16:20:41,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:42,355 INFO L130 PetriNetUnfolder]: 764/1483 cut-off events. [2022-12-13 16:20:42,363 INFO L131 PetriNetUnfolder]: For 5314/5314 co-relation queries the response was YES. [2022-12-13 16:20:42,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 1483 events. 764/1483 cut-off events. For 5314/5314 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8792 event pairs, 189 based on Foata normal form. 2/1485 useless extension candidates. Maximal degree in co-relation 4981. Up to 507 conditions per place. [2022-12-13 16:20:42,367 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 61 selfloop transitions, 17 changer transitions 113/191 dead transitions. [2022-12-13 16:20:42,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 191 transitions, 1701 flow [2022-12-13 16:20:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 16:20:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 16:20:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1973 transitions. [2022-12-13 16:20:42,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4049671592775041 [2022-12-13 16:20:42,370 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1973 transitions. [2022-12-13 16:20:42,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1973 transitions. [2022-12-13 16:20:42,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:42,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1973 transitions. [2022-12-13 16:20:42,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.95238095238095) internal successors, (1973), 21 states have internal predecessors, (1973), 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) [2022-12-13 16:20:42,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 232.0) internal successors, (5104), 22 states have internal predecessors, (5104), 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) [2022-12-13 16:20:42,377 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 232.0) internal successors, (5104), 22 states have internal predecessors, (5104), 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) [2022-12-13 16:20:42,377 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 839 flow. Second operand 21 states and 1973 transitions. [2022-12-13 16:20:42,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 191 transitions, 1701 flow [2022-12-13 16:20:42,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 191 transitions, 1429 flow, removed 74 selfloop flow, removed 7 redundant places. [2022-12-13 16:20:42,388 INFO L231 Difference]: Finished difference. Result has 91 places, 58 transitions, 512 flow [2022-12-13 16:20:42,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=512, PETRI_PLACES=91, PETRI_TRANSITIONS=58} [2022-12-13 16:20:42,389 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 72 predicate places. [2022-12-13 16:20:42,389 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 58 transitions, 512 flow [2022-12-13 16:20:42,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 88.91304347826087) internal successors, (2045), 23 states have internal predecessors, (2045), 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) [2022-12-13 16:20:42,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:42,389 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:42,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:20:42,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 16:20:42,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:42,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1361962234, now seen corresponding path program 6 times [2022-12-13 16:20:42,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:42,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735929722] [2022-12-13 16:20:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:42,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735929722] [2022-12-13 16:20:43,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735929722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293808908] [2022-12-13 16:20:43,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:20:43,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:43,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:43,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:43,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:20:43,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 16:20:43,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:20:43,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 16:20:43,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:43,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:20:43,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-13 16:20:43,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:20:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:20:43,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:43,391 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_237) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)) 5)) is different from false [2022-12-13 16:20:43,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:20:43,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2022-12-13 16:20:43,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-13 16:20:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2022-12-13 16:20:43,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293808908] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:43,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:43,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2022-12-13 16:20:43,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076942858] [2022-12-13 16:20:43,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 16:20:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 16:20:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=369, Unknown=1, NotChecked=38, Total=462 [2022-12-13 16:20:43,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 232 [2022-12-13 16:20:43,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 58 transitions, 512 flow. Second operand has 22 states, 22 states have (on average 73.86363636363636) internal successors, (1625), 22 states have internal predecessors, (1625), 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) [2022-12-13 16:20:43,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:43,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 232 [2022-12-13 16:20:43,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:44,430 INFO L130 PetriNetUnfolder]: 570/1072 cut-off events. [2022-12-13 16:20:44,430 INFO L131 PetriNetUnfolder]: For 3286/3286 co-relation queries the response was YES. [2022-12-13 16:20:44,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 1072 events. 570/1072 cut-off events. For 3286/3286 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5706 event pairs, 61 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 3723. Up to 294 conditions per place. [2022-12-13 16:20:44,434 INFO L137 encePairwiseOnDemand]: 221/232 looper letters, 54 selfloop transitions, 51 changer transitions 28/133 dead transitions. [2022-12-13 16:20:44,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 133 transitions, 1091 flow [2022-12-13 16:20:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 16:20:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 16:20:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1324 transitions. [2022-12-13 16:20:44,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3356997971602434 [2022-12-13 16:20:44,436 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1324 transitions. [2022-12-13 16:20:44,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1324 transitions. [2022-12-13 16:20:44,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:44,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1324 transitions. [2022-12-13 16:20:44,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 77.88235294117646) internal successors, (1324), 17 states have internal predecessors, (1324), 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) [2022-12-13 16:20:44,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 232.0) internal successors, (4176), 18 states have internal predecessors, (4176), 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) [2022-12-13 16:20:44,442 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 232.0) internal successors, (4176), 18 states have internal predecessors, (4176), 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) [2022-12-13 16:20:44,442 INFO L175 Difference]: Start difference. First operand has 91 places, 58 transitions, 512 flow. Second operand 17 states and 1324 transitions. [2022-12-13 16:20:44,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 133 transitions, 1091 flow [2022-12-13 16:20:44,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 133 transitions, 1043 flow, removed 7 selfloop flow, removed 17 redundant places. [2022-12-13 16:20:44,450 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 752 flow [2022-12-13 16:20:44,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=752, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2022-12-13 16:20:44,450 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 57 predicate places. [2022-12-13 16:20:44,450 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 752 flow [2022-12-13 16:20:44,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 73.86363636363636) internal successors, (1625), 22 states have internal predecessors, (1625), 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) [2022-12-13 16:20:44,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:44,451 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:44,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 16:20:44,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:44,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash -729707327, now seen corresponding path program 7 times [2022-12-13 16:20:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:44,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245516453] [2022-12-13 16:20:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:20:44,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:44,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245516453] [2022-12-13 16:20:44,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245516453] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:44,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560104255] [2022-12-13 16:20:44,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 16:20:44,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:44,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:44,774 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:44,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:20:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:44,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:20:44,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:20:44,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:20:44,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560104255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:44,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:44,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 10 [2022-12-13 16:20:44,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749568304] [2022-12-13 16:20:44,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:44,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 16:20:44,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 16:20:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:20:44,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 232 [2022-12-13 16:20:44,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 752 flow. Second operand has 11 states, 11 states have (on average 106.45454545454545) internal successors, (1171), 11 states have internal predecessors, (1171), 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) [2022-12-13 16:20:44,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:44,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 232 [2022-12-13 16:20:44,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:45,208 INFO L130 PetriNetUnfolder]: 818/1568 cut-off events. [2022-12-13 16:20:45,208 INFO L131 PetriNetUnfolder]: For 6221/6221 co-relation queries the response was YES. [2022-12-13 16:20:45,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 1568 events. 818/1568 cut-off events. For 6221/6221 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9282 event pairs, 185 based on Foata normal form. 18/1586 useless extension candidates. Maximal degree in co-relation 5250. Up to 848 conditions per place. [2022-12-13 16:20:45,213 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 64 selfloop transitions, 46 changer transitions 7/117 dead transitions. [2022-12-13 16:20:45,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 1375 flow [2022-12-13 16:20:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:20:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:20:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 563 transitions. [2022-12-13 16:20:45,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4853448275862069 [2022-12-13 16:20:45,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 563 transitions. [2022-12-13 16:20:45,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 563 transitions. [2022-12-13 16:20:45,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:45,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 563 transitions. [2022-12-13 16:20:45,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 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) [2022-12-13 16:20:45,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-12-13 16:20:45,217 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-12-13 16:20:45,217 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 752 flow. Second operand 5 states and 563 transitions. [2022-12-13 16:20:45,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 1375 flow [2022-12-13 16:20:45,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1297 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-12-13 16:20:45,227 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 1027 flow [2022-12-13 16:20:45,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1027, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2022-12-13 16:20:45,228 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 51 predicate places. [2022-12-13 16:20:45,228 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 1027 flow [2022-12-13 16:20:45,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.45454545454545) internal successors, (1171), 11 states have internal predecessors, (1171), 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) [2022-12-13 16:20:45,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:45,229 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:45,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:20:45,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 16:20:45,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1940496634, now seen corresponding path program 8 times [2022-12-13 16:20:45,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:45,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677978541] [2022-12-13 16:20:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:45,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:46,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:46,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677978541] [2022-12-13 16:20:46,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677978541] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:46,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104105992] [2022-12-13 16:20:46,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:20:46,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:46,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:46,048 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:46,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:20:46,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:20:46,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:20:46,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 16:20:46,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:46,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:20:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:46,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:46,394 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-13 16:20:46,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-13 16:20:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:46,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104105992] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:46,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:46,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-12-13 16:20:46,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927912447] [2022-12-13 16:20:46,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:46,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 16:20:46,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 16:20:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 16:20:47,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2022-12-13 16:20:47,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 1027 flow. Second operand has 33 states, 33 states have (on average 88.54545454545455) internal successors, (2922), 33 states have internal predecessors, (2922), 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) [2022-12-13 16:20:47,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:47,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2022-12-13 16:20:47,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:49,340 INFO L130 PetriNetUnfolder]: 1272/2484 cut-off events. [2022-12-13 16:20:49,340 INFO L131 PetriNetUnfolder]: For 11256/11256 co-relation queries the response was YES. [2022-12-13 16:20:49,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10943 conditions, 2484 events. 1272/2484 cut-off events. For 11256/11256 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16206 event pairs, 108 based on Foata normal form. 79/2563 useless extension candidates. Maximal degree in co-relation 6917. Up to 1328 conditions per place. [2022-12-13 16:20:49,348 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 160 selfloop transitions, 117 changer transitions 112/389 dead transitions. [2022-12-13 16:20:49,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 389 transitions, 3556 flow [2022-12-13 16:20:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 16:20:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-13 16:20:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 4078 transitions. [2022-12-13 16:20:49,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4087810745789896 [2022-12-13 16:20:49,352 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 4078 transitions. [2022-12-13 16:20:49,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 4078 transitions. [2022-12-13 16:20:49,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:49,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 4078 transitions. [2022-12-13 16:20:49,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 94.83720930232558) internal successors, (4078), 43 states have internal predecessors, (4078), 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) [2022-12-13 16:20:49,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 232.0) internal successors, (10208), 44 states have internal predecessors, (10208), 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) [2022-12-13 16:20:49,368 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 232.0) internal successors, (10208), 44 states have internal predecessors, (10208), 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) [2022-12-13 16:20:49,368 INFO L175 Difference]: Start difference. First operand has 70 places, 86 transitions, 1027 flow. Second operand 43 states and 4078 transitions. [2022-12-13 16:20:49,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 389 transitions, 3556 flow [2022-12-13 16:20:49,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 389 transitions, 3344 flow, removed 97 selfloop flow, removed 4 redundant places. [2022-12-13 16:20:49,387 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 1883 flow [2022-12-13 16:20:49,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1883, PETRI_PLACES=116, PETRI_TRANSITIONS=136} [2022-12-13 16:20:49,388 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 97 predicate places. [2022-12-13 16:20:49,388 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 1883 flow [2022-12-13 16:20:49,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 88.54545454545455) internal successors, (2922), 33 states have internal predecessors, (2922), 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) [2022-12-13 16:20:49,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:49,389 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:49,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:20:49,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 16:20:49,591 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:49,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:49,592 INFO L85 PathProgramCache]: Analyzing trace with hash 819572672, now seen corresponding path program 9 times [2022-12-13 16:20:49,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:49,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136544648] [2022-12-13 16:20:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:49,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:50,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:50,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136544648] [2022-12-13 16:20:50,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136544648] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:50,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452326811] [2022-12-13 16:20:50,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:20:50,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:50,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:50,103 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:50,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:20:50,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 16:20:50,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:20:50,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 16:20:50,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:50,537 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 16:20:50,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 16:20:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:20:50,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:50,755 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-13 16:20:50,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-13 16:20:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:20:51,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452326811] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:51,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:51,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-12-13 16:20:51,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134814060] [2022-12-13 16:20:51,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 16:20:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 16:20:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-12-13 16:20:51,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2022-12-13 16:20:51,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 136 transitions, 1883 flow. Second operand has 31 states, 31 states have (on average 88.83870967741936) internal successors, (2754), 31 states have internal predecessors, (2754), 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) [2022-12-13 16:20:51,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:51,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2022-12-13 16:20:51,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:55,603 INFO L130 PetriNetUnfolder]: 1388/2785 cut-off events. [2022-12-13 16:20:55,604 INFO L131 PetriNetUnfolder]: For 13681/13681 co-relation queries the response was YES. [2022-12-13 16:20:55,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12386 conditions, 2785 events. 1388/2785 cut-off events. For 13681/13681 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19441 event pairs, 360 based on Foata normal form. 41/2826 useless extension candidates. Maximal degree in co-relation 12190. Up to 1490 conditions per place. [2022-12-13 16:20:55,615 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 123 selfloop transitions, 28 changer transitions 220/371 dead transitions. [2022-12-13 16:20:55,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 371 transitions, 3713 flow [2022-12-13 16:20:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 16:20:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-13 16:20:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3672 transitions. [2022-12-13 16:20:55,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40583554376657827 [2022-12-13 16:20:55,619 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3672 transitions. [2022-12-13 16:20:55,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3672 transitions. [2022-12-13 16:20:55,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:55,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3672 transitions. [2022-12-13 16:20:55,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 94.15384615384616) internal successors, (3672), 39 states have internal predecessors, (3672), 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) [2022-12-13 16:20:55,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 232.0) internal successors, (9280), 40 states have internal predecessors, (9280), 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) [2022-12-13 16:20:55,628 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 232.0) internal successors, (9280), 40 states have internal predecessors, (9280), 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) [2022-12-13 16:20:55,628 INFO L175 Difference]: Start difference. First operand has 116 places, 136 transitions, 1883 flow. Second operand 39 states and 3672 transitions. [2022-12-13 16:20:55,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 371 transitions, 3713 flow [2022-12-13 16:20:55,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 371 transitions, 3360 flow, removed 37 selfloop flow, removed 12 redundant places. [2022-12-13 16:20:55,659 INFO L231 Difference]: Finished difference. Result has 147 places, 104 transitions, 1243 flow [2022-12-13 16:20:55,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1243, PETRI_PLACES=147, PETRI_TRANSITIONS=104} [2022-12-13 16:20:55,660 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 128 predicate places. [2022-12-13 16:20:55,660 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 104 transitions, 1243 flow [2022-12-13 16:20:55,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 88.83870967741936) internal successors, (2754), 31 states have internal predecessors, (2754), 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) [2022-12-13 16:20:55,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:55,660 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:55,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:20:55,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:55,862 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:55,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:55,863 INFO L85 PathProgramCache]: Analyzing trace with hash -960784658, now seen corresponding path program 10 times [2022-12-13 16:20:55,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:55,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175664953] [2022-12-13 16:20:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:55,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:20:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:20:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:56,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:20:56,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175664953] [2022-12-13 16:20:56,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175664953] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:20:56,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126578227] [2022-12-13 16:20:56,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:20:56,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:20:56,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:20:56,330 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:20:56,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:20:56,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:20:56,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:20:56,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 16:20:56,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:20:56,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:20:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:56,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:20:56,735 INFO L321 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-12-13 16:20:56,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-12-13 16:20:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:20:56,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126578227] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:20:56,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:20:56,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-12-13 16:20:56,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567998144] [2022-12-13 16:20:56,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:20:56,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 16:20:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:20:56,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 16:20:56,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 16:20:57,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2022-12-13 16:20:57,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 104 transitions, 1243 flow. Second operand has 33 states, 33 states have (on average 88.72727272727273) internal successors, (2928), 33 states have internal predecessors, (2928), 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) [2022-12-13 16:20:57,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:20:57,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2022-12-13 16:20:57,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:20:59,710 INFO L130 PetriNetUnfolder]: 1151/2208 cut-off events. [2022-12-13 16:20:59,710 INFO L131 PetriNetUnfolder]: For 12102/12102 co-relation queries the response was YES. [2022-12-13 16:20:59,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9758 conditions, 2208 events. 1151/2208 cut-off events. For 12102/12102 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13487 event pairs, 106 based on Foata normal form. 10/2218 useless extension candidates. Maximal degree in co-relation 9622. Up to 1205 conditions per place. [2022-12-13 16:20:59,719 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 139 selfloop transitions, 92 changer transitions 75/306 dead transitions. [2022-12-13 16:20:59,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 306 transitions, 3105 flow [2022-12-13 16:20:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 16:20:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-13 16:20:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3290 transitions. [2022-12-13 16:20:59,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4051724137931034 [2022-12-13 16:20:59,722 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3290 transitions. [2022-12-13 16:20:59,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3290 transitions. [2022-12-13 16:20:59,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:20:59,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3290 transitions. [2022-12-13 16:20:59,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 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) [2022-12-13 16:20:59,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 232.0) internal successors, (8352), 36 states have internal predecessors, (8352), 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) [2022-12-13 16:20:59,738 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 232.0) internal successors, (8352), 36 states have internal predecessors, (8352), 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) [2022-12-13 16:20:59,738 INFO L175 Difference]: Start difference. First operand has 147 places, 104 transitions, 1243 flow. Second operand 35 states and 3290 transitions. [2022-12-13 16:20:59,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 306 transitions, 3105 flow [2022-12-13 16:20:59,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 306 transitions, 2916 flow, removed 69 selfloop flow, removed 21 redundant places. [2022-12-13 16:20:59,767 INFO L231 Difference]: Finished difference. Result has 140 places, 126 transitions, 1661 flow [2022-12-13 16:20:59,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1661, PETRI_PLACES=140, PETRI_TRANSITIONS=126} [2022-12-13 16:20:59,767 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 121 predicate places. [2022-12-13 16:20:59,767 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 126 transitions, 1661 flow [2022-12-13 16:20:59,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 88.72727272727273) internal successors, (2928), 33 states have internal predecessors, (2928), 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) [2022-12-13 16:20:59,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:20:59,768 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:20:59,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 16:20:59,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 16:20:59,969 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:20:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:20:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash -767816304, now seen corresponding path program 11 times [2022-12-13 16:20:59,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:20:59,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732862352] [2022-12-13 16:20:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:20:59,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:21:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:21:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:00,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:21:00,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732862352] [2022-12-13 16:21:00,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732862352] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:21:00,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553067674] [2022-12-13 16:21:00,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:21:00,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:21:00,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:21:00,624 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:21:00,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:21:00,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 16:21:00,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:21:00,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 16:21:00,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:21:00,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:21:00,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-13 16:21:00,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:21:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:21:00,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:21:01,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:21:01,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2022-12-13 16:21:01,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-13 16:21:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:21:01,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553067674] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:21:01,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:21:01,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 27 [2022-12-13 16:21:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355114131] [2022-12-13 16:21:01,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:21:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 16:21:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:21:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 16:21:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=732, Unknown=5, NotChecked=0, Total=812 [2022-12-13 16:21:01,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 232 [2022-12-13 16:21:01,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 126 transitions, 1661 flow. Second operand has 29 states, 29 states have (on average 74.65517241379311) internal successors, (2165), 29 states have internal predecessors, (2165), 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) [2022-12-13 16:21:01,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:21:01,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 232 [2022-12-13 16:21:01,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:21:02,918 INFO L130 PetriNetUnfolder]: 1128/2135 cut-off events. [2022-12-13 16:21:02,918 INFO L131 PetriNetUnfolder]: For 12759/12759 co-relation queries the response was YES. [2022-12-13 16:21:02,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 2135 events. 1128/2135 cut-off events. For 12759/12759 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12887 event pairs, 118 based on Foata normal form. 11/2146 useless extension candidates. Maximal degree in co-relation 9618. Up to 1167 conditions per place. [2022-12-13 16:21:02,926 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 48 selfloop transitions, 99 changer transitions 59/206 dead transitions. [2022-12-13 16:21:02,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 206 transitions, 2410 flow [2022-12-13 16:21:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 16:21:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 16:21:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1585 transitions. [2022-12-13 16:21:02,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3415948275862069 [2022-12-13 16:21:02,929 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1585 transitions. [2022-12-13 16:21:02,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1585 transitions. [2022-12-13 16:21:02,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:21:02,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1585 transitions. [2022-12-13 16:21:02,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 79.25) internal successors, (1585), 20 states have internal predecessors, (1585), 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) [2022-12-13 16:21:02,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 232.0) internal successors, (4872), 21 states have internal predecessors, (4872), 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) [2022-12-13 16:21:02,937 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 232.0) internal successors, (4872), 21 states have internal predecessors, (4872), 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) [2022-12-13 16:21:02,937 INFO L175 Difference]: Start difference. First operand has 140 places, 126 transitions, 1661 flow. Second operand 20 states and 1585 transitions. [2022-12-13 16:21:02,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 206 transitions, 2410 flow [2022-12-13 16:21:02,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 206 transitions, 2251 flow, removed 64 selfloop flow, removed 12 redundant places. [2022-12-13 16:21:02,969 INFO L231 Difference]: Finished difference. Result has 143 places, 120 transitions, 1851 flow [2022-12-13 16:21:02,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1851, PETRI_PLACES=143, PETRI_TRANSITIONS=120} [2022-12-13 16:21:02,970 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 124 predicate places. [2022-12-13 16:21:02,970 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 120 transitions, 1851 flow [2022-12-13 16:21:02,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 74.65517241379311) internal successors, (2165), 29 states have internal predecessors, (2165), 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) [2022-12-13 16:21:02,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:21:02,971 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:21:02,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 16:21:03,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:21:03,171 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:21:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:21:03,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1941191160, now seen corresponding path program 12 times [2022-12-13 16:21:03,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:21:03,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423235582] [2022-12-13 16:21:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:21:03,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:21:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:21:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:21:03,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:21:03,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423235582] [2022-12-13 16:21:03,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423235582] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:21:03,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439125803] [2022-12-13 16:21:03,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:21:03,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:21:03,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:21:03,261 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:21:03,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 16:21:03,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 16:21:03,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:21:03,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 16:21:03,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:21:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:21:03,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:21:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:21:03,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439125803] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:21:03,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:21:03,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 8] total 13 [2022-12-13 16:21:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516059096] [2022-12-13 16:21:03,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:21:03,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 16:21:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:21:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 16:21:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:21:03,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 232 [2022-12-13 16:21:03,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 120 transitions, 1851 flow. Second operand has 14 states, 14 states have (on average 106.21428571428571) internal successors, (1487), 14 states have internal predecessors, (1487), 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) [2022-12-13 16:21:03,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:21:03,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 232 [2022-12-13 16:21:03,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:21:03,977 INFO L130 PetriNetUnfolder]: 1829/3394 cut-off events. [2022-12-13 16:21:03,978 INFO L131 PetriNetUnfolder]: For 24017/24017 co-relation queries the response was YES. [2022-12-13 16:21:03,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16694 conditions, 3394 events. 1829/3394 cut-off events. For 24017/24017 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 22153 event pairs, 287 based on Foata normal form. 12/3406 useless extension candidates. Maximal degree in co-relation 16628. Up to 1877 conditions per place. [2022-12-13 16:21:03,992 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 85 selfloop transitions, 117 changer transitions 0/202 dead transitions. [2022-12-13 16:21:03,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 202 transitions, 3459 flow [2022-12-13 16:21:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:21:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:21:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2022-12-13 16:21:03,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4863505747126437 [2022-12-13 16:21:03,994 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2022-12-13 16:21:03,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2022-12-13 16:21:03,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:21:03,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2022-12-13 16:21:03,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 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) [2022-12-13 16:21:03,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 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) [2022-12-13 16:21:03,997 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 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) [2022-12-13 16:21:03,997 INFO L175 Difference]: Start difference. First operand has 143 places, 120 transitions, 1851 flow. Second operand 6 states and 677 transitions. [2022-12-13 16:21:03,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 202 transitions, 3459 flow [2022-12-13 16:21:04,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 202 transitions, 2816 flow, removed 166 selfloop flow, removed 29 redundant places. [2022-12-13 16:21:04,054 INFO L231 Difference]: Finished difference. Result has 104 places, 169 transitions, 2498 flow [2022-12-13 16:21:04,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2498, PETRI_PLACES=104, PETRI_TRANSITIONS=169} [2022-12-13 16:21:04,054 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 85 predicate places. [2022-12-13 16:21:04,055 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 169 transitions, 2498 flow [2022-12-13 16:21:04,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.21428571428571) internal successors, (1487), 14 states have internal predecessors, (1487), 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) [2022-12-13 16:21:04,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:21:04,055 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:21:04,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 16:21:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 16:21:04,256 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:21:04,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:21:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash 742555278, now seen corresponding path program 13 times [2022-12-13 16:21:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:21:04,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419611015] [2022-12-13 16:21:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:21:04,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:21:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:21:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:04,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:21:04,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419611015] [2022-12-13 16:21:04,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419611015] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:21:04,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735140232] [2022-12-13 16:21:04,865 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 16:21:04,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:21:04,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:21:04,866 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:21:04,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 16:21:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:21:04,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 16:21:04,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:21:05,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:21:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:05,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:21:05,441 INFO L321 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-12-13 16:21:05,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-12-13 16:21:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:05,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735140232] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:21:05,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:21:05,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2022-12-13 16:21:05,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717772032] [2022-12-13 16:21:05,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:21:05,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-13 16:21:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:21:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-13 16:21:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1498, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 16:21:07,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2022-12-13 16:21:07,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 169 transitions, 2498 flow. Second operand has 42 states, 42 states have (on average 88.38095238095238) internal successors, (3712), 42 states have internal predecessors, (3712), 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) [2022-12-13 16:21:07,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:21:07,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2022-12-13 16:21:07,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:21:21,829 INFO L130 PetriNetUnfolder]: 5815/11128 cut-off events. [2022-12-13 16:21:21,829 INFO L131 PetriNetUnfolder]: For 60891/60891 co-relation queries the response was YES. [2022-12-13 16:21:21,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49414 conditions, 11128 events. 5815/11128 cut-off events. For 60891/60891 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 89327 event pairs, 335 based on Foata normal form. 463/11591 useless extension candidates. Maximal degree in co-relation 35139. Up to 5966 conditions per place. [2022-12-13 16:21:21,866 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 749 selfloop transitions, 452 changer transitions 460/1661 dead transitions. [2022-12-13 16:21:21,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1661 transitions, 16890 flow [2022-12-13 16:21:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-12-13 16:21:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2022-12-13 16:21:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 16717 transitions. [2022-12-13 16:21:21,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4117487684729064 [2022-12-13 16:21:21,882 INFO L72 ComplementDD]: Start complementDD. Operand 175 states and 16717 transitions. [2022-12-13 16:21:21,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 16717 transitions. [2022-12-13 16:21:21,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:21:21,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 175 states and 16717 transitions. [2022-12-13 16:21:21,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 176 states, 175 states have (on average 95.52571428571429) internal successors, (16717), 175 states have internal predecessors, (16717), 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) [2022-12-13 16:21:21,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 176 states, 176 states have (on average 232.0) internal successors, (40832), 176 states have internal predecessors, (40832), 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) [2022-12-13 16:21:21,944 INFO L81 ComplementDD]: Finished complementDD. Result has 176 states, 176 states have (on average 232.0) internal successors, (40832), 176 states have internal predecessors, (40832), 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) [2022-12-13 16:21:21,944 INFO L175 Difference]: Start difference. First operand has 104 places, 169 transitions, 2498 flow. Second operand 175 states and 16717 transitions. [2022-12-13 16:21:21,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1661 transitions, 16890 flow [2022-12-13 16:21:22,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1661 transitions, 16518 flow, removed 186 selfloop flow, removed 0 redundant places. [2022-12-13 16:21:22,106 INFO L231 Difference]: Finished difference. Result has 339 places, 507 transitions, 8281 flow [2022-12-13 16:21:22,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=175, PETRI_FLOW=8281, PETRI_PLACES=339, PETRI_TRANSITIONS=507} [2022-12-13 16:21:22,107 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 320 predicate places. [2022-12-13 16:21:22,107 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 507 transitions, 8281 flow [2022-12-13 16:21:22,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 88.38095238095238) internal successors, (3712), 42 states have internal predecessors, (3712), 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) [2022-12-13 16:21:22,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:21:22,108 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:21:22,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 16:21:22,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 16:21:22,309 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:21:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:21:22,311 INFO L85 PathProgramCache]: Analyzing trace with hash 483651102, now seen corresponding path program 14 times [2022-12-13 16:21:22,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:21:22,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236412740] [2022-12-13 16:21:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:21:22,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:21:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:21:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:22,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:21:22,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236412740] [2022-12-13 16:21:22,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236412740] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:21:22,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089922837] [2022-12-13 16:21:22,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:21:22,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:21:22,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:21:22,880 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:21:22,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 16:21:22,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:21:22,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:21:22,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 16:21:22,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:21:23,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:21:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:23,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:21:23,503 INFO L321 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-12-13 16:21:23,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-12-13 16:21:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:23,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089922837] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:21:23,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:21:23,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2022-12-13 16:21:23,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270026879] [2022-12-13 16:21:23,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:21:23,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-13 16:21:23,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:21:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-13 16:21:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 16:21:24,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2022-12-13 16:21:24,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 507 transitions, 8281 flow. Second operand has 42 states, 42 states have (on average 88.57142857142857) internal successors, (3720), 42 states have internal predecessors, (3720), 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) [2022-12-13 16:21:24,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:21:24,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2022-12-13 16:21:24,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:21:33,254 INFO L130 PetriNetUnfolder]: 4417/8441 cut-off events. [2022-12-13 16:21:33,254 INFO L131 PetriNetUnfolder]: For 140127/140127 co-relation queries the response was YES. [2022-12-13 16:21:33,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44815 conditions, 8441 events. 4417/8441 cut-off events. For 140127/140127 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 65605 event pairs, 278 based on Foata normal form. 148/8589 useless extension candidates. Maximal degree in co-relation 43098. Up to 4583 conditions per place. [2022-12-13 16:21:33,297 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 179 selfloop transitions, 285 changer transitions 462/926 dead transitions. [2022-12-13 16:21:33,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 926 transitions, 11949 flow [2022-12-13 16:21:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-12-13 16:21:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2022-12-13 16:21:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 8241 transitions. [2022-12-13 16:21:33,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4082936979785969 [2022-12-13 16:21:33,304 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 8241 transitions. [2022-12-13 16:21:33,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 8241 transitions. [2022-12-13 16:21:33,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:21:33,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 8241 transitions. [2022-12-13 16:21:33,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 94.72413793103448) internal successors, (8241), 87 states have internal predecessors, (8241), 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) [2022-12-13 16:21:33,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 232.0) internal successors, (20416), 88 states have internal predecessors, (20416), 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) [2022-12-13 16:21:33,322 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 232.0) internal successors, (20416), 88 states have internal predecessors, (20416), 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) [2022-12-13 16:21:33,322 INFO L175 Difference]: Start difference. First operand has 339 places, 507 transitions, 8281 flow. Second operand 87 states and 8241 transitions. [2022-12-13 16:21:33,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 926 transitions, 11949 flow [2022-12-13 16:21:34,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 926 transitions, 10487 flow, removed 448 selfloop flow, removed 35 redundant places. [2022-12-13 16:21:34,193 INFO L231 Difference]: Finished difference. Result has 318 places, 310 transitions, 5053 flow [2022-12-13 16:21:34,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=5271, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=5053, PETRI_PLACES=318, PETRI_TRANSITIONS=310} [2022-12-13 16:21:34,193 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 299 predicate places. [2022-12-13 16:21:34,193 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 310 transitions, 5053 flow [2022-12-13 16:21:34,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 88.57142857142857) internal successors, (3720), 42 states have internal predecessors, (3720), 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) [2022-12-13 16:21:34,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:21:34,194 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:21:34,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 16:21:34,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 16:21:34,395 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:21:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:21:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash 939814540, now seen corresponding path program 15 times [2022-12-13 16:21:34,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:21:34,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059831366] [2022-12-13 16:21:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:21:34,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:21:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:21:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:34,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:21:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059831366] [2022-12-13 16:21:34,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059831366] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:21:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054281110] [2022-12-13 16:21:34,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:21:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:21:34,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:21:34,969 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:21:34,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 16:21:35,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 16:21:35,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:21:35,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-13 16:21:35,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:21:35,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 16:21:35,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:21:35,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:21:35,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:21:35,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:21:35,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:21:35,850 INFO L321 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2022-12-13 16:21:35,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 19 [2022-12-13 16:21:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:21:35,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:21:39,472 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:21:39,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 105 [2022-12-13 16:21:39,513 INFO L321 Elim1Store]: treesize reduction 60, result has 36.8 percent of original size [2022-12-13 16:21:39,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 786 treesize of output 734 [2022-12-13 16:21:39,536 INFO L321 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2022-12-13 16:21:39,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 700 treesize of output 634 [2022-12-13 16:21:39,565 INFO L321 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2022-12-13 16:21:39,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 634 treesize of output 502 [2022-12-13 16:21:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:21:39,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054281110] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:21:39,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:21:39,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 37 [2022-12-13 16:21:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137526372] [2022-12-13 16:21:39,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:21:39,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 16:21:39,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:21:39,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 16:21:39,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1290, Unknown=5, NotChecked=0, Total=1482 [2022-12-13 16:21:48,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:21:52,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 232 [2022-12-13 16:21:52,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 310 transitions, 5053 flow. Second operand has 39 states, 39 states have (on average 70.61538461538461) internal successors, (2754), 39 states have internal predecessors, (2754), 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) [2022-12-13 16:21:52,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:21:52,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 232 [2022-12-13 16:21:52,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:21:56,432 INFO L130 PetriNetUnfolder]: 3525/6632 cut-off events. [2022-12-13 16:21:56,432 INFO L131 PetriNetUnfolder]: For 89204/89204 co-relation queries the response was YES. [2022-12-13 16:21:56,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35623 conditions, 6632 events. 3525/6632 cut-off events. For 89204/89204 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 49005 event pairs, 1271 based on Foata normal form. 2/6634 useless extension candidates. Maximal degree in co-relation 34502. Up to 5405 conditions per place. [2022-12-13 16:21:56,462 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 257 selfloop transitions, 24 changer transitions 114/395 dead transitions. [2022-12-13 16:21:56,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 395 transitions, 6292 flow [2022-12-13 16:21:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 16:21:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 16:21:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1567 transitions. [2022-12-13 16:21:56,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3216338259441708 [2022-12-13 16:21:56,464 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1567 transitions. [2022-12-13 16:21:56,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1567 transitions. [2022-12-13 16:21:56,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:21:56,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1567 transitions. [2022-12-13 16:21:56,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 74.61904761904762) internal successors, (1567), 21 states have internal predecessors, (1567), 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) [2022-12-13 16:21:56,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 232.0) internal successors, (5104), 22 states have internal predecessors, (5104), 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) [2022-12-13 16:21:56,468 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 232.0) internal successors, (5104), 22 states have internal predecessors, (5104), 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) [2022-12-13 16:21:56,468 INFO L175 Difference]: Start difference. First operand has 318 places, 310 transitions, 5053 flow. Second operand 21 states and 1567 transitions. [2022-12-13 16:21:56,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 395 transitions, 6292 flow [2022-12-13 16:21:57,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 395 transitions, 5957 flow, removed 73 selfloop flow, removed 43 redundant places. [2022-12-13 16:21:57,081 INFO L231 Difference]: Finished difference. Result has 232 places, 270 transitions, 4290 flow [2022-12-13 16:21:57,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=4755, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4290, PETRI_PLACES=232, PETRI_TRANSITIONS=270} [2022-12-13 16:21:57,082 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 213 predicate places. [2022-12-13 16:21:57,082 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 270 transitions, 4290 flow [2022-12-13 16:21:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 70.61538461538461) internal successors, (2754), 39 states have internal predecessors, (2754), 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) [2022-12-13 16:21:57,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:21:57,082 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:21:57,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 16:21:57,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 16:21:57,284 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:21:57,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:21:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1512280903, now seen corresponding path program 16 times [2022-12-13 16:21:57,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:21:57,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483981750] [2022-12-13 16:21:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:21:57,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:21:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:21:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:21:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:21:58,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483981750] [2022-12-13 16:21:58,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483981750] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:21:58,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083026577] [2022-12-13 16:21:58,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:21:58,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:21:58,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:21:58,072 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:21:58,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 16:21:58,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:21:58,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:21:58,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 16:21:58,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:21:58,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:21:58,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-13 16:21:58,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 16:21:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:21:58,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:21:58,620 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_643 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_643) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2022-12-13 16:21:58,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:21:58,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2022-12-13 16:21:58,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-13 16:21:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 4 not checked. [2022-12-13 16:21:58,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083026577] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:21:58,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:21:58,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 11] total 36 [2022-12-13 16:21:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128764920] [2022-12-13 16:21:58,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:21:58,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 16:21:58,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:21:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 16:21:58,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1220, Unknown=1, NotChecked=70, Total=1406 [2022-12-13 16:21:58,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 232 [2022-12-13 16:21:58,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 270 transitions, 4290 flow. Second operand has 38 states, 38 states have (on average 73.5) internal successors, (2793), 38 states have internal predecessors, (2793), 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) [2022-12-13 16:21:58,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:21:58,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 232 [2022-12-13 16:21:58,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:22:12,801 INFO L130 PetriNetUnfolder]: 12259/22376 cut-off events. [2022-12-13 16:22:12,801 INFO L131 PetriNetUnfolder]: For 285850/285850 co-relation queries the response was YES. [2022-12-13 16:22:12,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116516 conditions, 22376 events. 12259/22376 cut-off events. For 285850/285850 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 190207 event pairs, 440 based on Foata normal form. 171/22547 useless extension candidates. Maximal degree in co-relation 116409. Up to 12327 conditions per place. [2022-12-13 16:22:12,941 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 755 selfloop transitions, 958 changer transitions 187/1900 dead transitions. [2022-12-13 16:22:12,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1900 transitions, 27822 flow [2022-12-13 16:22:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-12-13 16:22:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2022-12-13 16:22:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 11630 transitions. [2022-12-13 16:22:12,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34812021072796934 [2022-12-13 16:22:12,951 INFO L72 ComplementDD]: Start complementDD. Operand 144 states and 11630 transitions. [2022-12-13 16:22:12,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 11630 transitions. [2022-12-13 16:22:12,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:22:12,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 144 states and 11630 transitions. [2022-12-13 16:22:12,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 145 states, 144 states have (on average 80.76388888888889) internal successors, (11630), 144 states have internal predecessors, (11630), 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) [2022-12-13 16:22:12,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 145 states, 145 states have (on average 232.0) internal successors, (33640), 145 states have internal predecessors, (33640), 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) [2022-12-13 16:22:12,980 INFO L81 ComplementDD]: Finished complementDD. Result has 145 states, 145 states have (on average 232.0) internal successors, (33640), 145 states have internal predecessors, (33640), 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) [2022-12-13 16:22:12,980 INFO L175 Difference]: Start difference. First operand has 232 places, 270 transitions, 4290 flow. Second operand 144 states and 11630 transitions. [2022-12-13 16:22:12,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1900 transitions, 27822 flow [2022-12-13 16:22:13,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1900 transitions, 25739 flow, removed 1022 selfloop flow, removed 15 redundant places. [2022-12-13 16:22:14,013 INFO L231 Difference]: Finished difference. Result has 395 places, 1006 transitions, 18847 flow [2022-12-13 16:22:14,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=4110, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=144, PETRI_FLOW=18847, PETRI_PLACES=395, PETRI_TRANSITIONS=1006} [2022-12-13 16:22:14,014 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 376 predicate places. [2022-12-13 16:22:14,014 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 1006 transitions, 18847 flow [2022-12-13 16:22:14,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 73.5) internal successors, (2793), 38 states have internal predecessors, (2793), 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) [2022-12-13 16:22:14,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:22:14,014 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:22:14,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 16:22:14,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:22:14,216 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:22:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:22:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash 402619972, now seen corresponding path program 17 times [2022-12-13 16:22:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:22:14,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316401120] [2022-12-13 16:22:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:22:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:22:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:22:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:22:14,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:22:14,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316401120] [2022-12-13 16:22:14,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316401120] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:22:14,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946077028] [2022-12-13 16:22:14,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:22:14,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:22:14,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:22:14,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:22:14,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 16:22:14,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 16:22:14,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:22:14,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:22:14,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:22:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:22:14,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:22:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:22:14,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946077028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:22:14,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:22:14,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 10] total 17 [2022-12-13 16:22:14,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065282355] [2022-12-13 16:22:14,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:22:14,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 16:22:14,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:22:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 16:22:14,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:22:14,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2022-12-13 16:22:14,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1006 transitions, 18847 flow. Second operand has 18 states, 18 states have (on average 103.66666666666667) internal successors, (1866), 18 states have internal predecessors, (1866), 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) [2022-12-13 16:22:14,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:22:14,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2022-12-13 16:22:14,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:22:24,464 INFO L130 PetriNetUnfolder]: 16041/29259 cut-off events. [2022-12-13 16:22:24,465 INFO L131 PetriNetUnfolder]: For 630613/630613 co-relation queries the response was YES. [2022-12-13 16:22:24,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160928 conditions, 29259 events. 16041/29259 cut-off events. For 630613/630613 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 261353 event pairs, 3786 based on Foata normal form. 18/29277 useless extension candidates. Maximal degree in co-relation 152909. Up to 16469 conditions per place. [2022-12-13 16:22:24,791 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 735 selfloop transitions, 606 changer transitions 0/1341 dead transitions. [2022-12-13 16:22:24,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 1341 transitions, 28407 flow [2022-12-13 16:22:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:22:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:22:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 777 transitions. [2022-12-13 16:22:24,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47844827586206895 [2022-12-13 16:22:24,793 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 777 transitions. [2022-12-13 16:22:24,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 777 transitions. [2022-12-13 16:22:24,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:22:24,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 777 transitions. [2022-12-13 16:22:24,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 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) [2022-12-13 16:22:24,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-12-13 16:22:24,795 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-12-13 16:22:24,795 INFO L175 Difference]: Start difference. First operand has 395 places, 1006 transitions, 18847 flow. Second operand 7 states and 777 transitions. [2022-12-13 16:22:24,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 1341 transitions, 28407 flow [2022-12-13 16:22:29,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1341 transitions, 22195 flow, removed 3033 selfloop flow, removed 12 redundant places. [2022-12-13 16:22:29,558 INFO L231 Difference]: Finished difference. Result has 392 places, 1300 transitions, 20803 flow [2022-12-13 16:22:29,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=14328, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20803, PETRI_PLACES=392, PETRI_TRANSITIONS=1300} [2022-12-13 16:22:29,559 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 373 predicate places. [2022-12-13 16:22:29,559 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 1300 transitions, 20803 flow [2022-12-13 16:22:29,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 103.66666666666667) internal successors, (1866), 18 states have internal predecessors, (1866), 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) [2022-12-13 16:22:29,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:22:29,559 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:22:29,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 16:22:29,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:22:29,760 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:22:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:22:29,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1749087636, now seen corresponding path program 18 times [2022-12-13 16:22:29,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:22:29,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419025058] [2022-12-13 16:22:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:22:29,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:22:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:22:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:22:30,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:22:30,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419025058] [2022-12-13 16:22:30,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419025058] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:22:30,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450613176] [2022-12-13 16:22:30,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:22:30,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:22:30,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:22:30,270 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:22:30,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16092c86-fe6c-4f05-b200-5a1f6ea978df/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 16:22:30,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 16:22:30,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:22:30,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-13 16:22:30,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:22:30,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 16:22:30,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:22:30,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:22:30,917 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 16:22:30,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 16:22:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:22:30,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:22:40,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:22:40,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2022-12-13 16:22:40,901 INFO L321 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-12-13 16:22:40,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 308 treesize of output 283 [2022-12-13 16:22:40,911 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 16:22:40,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 274 treesize of output 222 [2022-12-13 16:22:40,923 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 16:22:40,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 150 [2022-12-13 16:22:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:22:41,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450613176] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:22:41,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:22:41,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 51 [2022-12-13 16:22:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936464066] [2022-12-13 16:22:41,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:22:41,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 16:22:41,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:22:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 16:22:41,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=2302, Unknown=11, NotChecked=0, Total=2756 [2022-12-13 16:22:44,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:22:45,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:22:47,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 232 [2022-12-13 16:22:47,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 1300 transitions, 20803 flow. Second operand has 53 states, 53 states have (on average 70.26415094339623) internal successors, (3724), 53 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:22:47,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:22:47,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 232 [2022-12-13 16:22:47,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:22:55,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:23:08,694 WARN L233 SmtUtils]: Spent 9.18s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:23:10,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:23:23,636 WARN L233 SmtUtils]: Spent 8.82s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:23:26,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:23:38,851 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:23:40,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:23:44,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:23:59,900 WARN L233 SmtUtils]: Spent 11.67s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:24:01,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:03,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:05,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:09,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:12,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:14,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:18,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:28,737 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:24:30,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:33,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:36,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:39,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:42,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:44,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:46,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:48,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:24:50,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:25:14,450 WARN L233 SmtUtils]: Spent 22.11s on a formula simplification. DAG size of input: 62 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:25:36,865 WARN L233 SmtUtils]: Spent 22.12s on a formula simplification. DAG size of input: 59 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:25:38,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:25:40,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:25:41,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:25:43,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:25:45,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:25:46,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:25:48,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:25:59,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:02,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:04,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:05,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:08,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:10,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:29,775 WARN L233 SmtUtils]: Spent 9.51s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:26:33,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:35,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:36,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:38,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:39,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:40,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:42,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:44,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:46,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:49,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:51,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:53,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:26:55,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:18,233 WARN L233 SmtUtils]: Spent 22.12s on a formula simplification. DAG size of input: 57 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:27:20,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:22,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:24,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:25,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:27,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:30,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:32,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:34,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:36,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:37,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:38,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:40,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:41,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:42,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:43,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:45,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:47,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:48,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:27:53,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:28:08,060 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:28:10,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:28:37,734 WARN L233 SmtUtils]: Spent 27.03s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:28:39,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:11,626 WARN L233 SmtUtils]: Spent 31.53s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:29:12,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:13,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:15,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:16,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:17,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:18,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:19,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:21,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:23,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:24,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:26,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:29,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:31,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:33,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:38,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:40,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:41,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:44,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:46,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:48,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:50,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:52,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:54,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:56,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:29:57,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:14,130 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:30:16,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:18,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:20,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:22,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:24,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:26,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:28,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:32,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:33,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:34,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:35,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:36,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:38,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:39,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:40,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:42,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:43,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:47,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:48,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:49,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:50,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:51,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:58,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:30:59,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:00,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:02,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:04,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:07,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:11,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:15,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:18,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:19,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:31:40,661 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:31:42,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:32:05,884 WARN L233 SmtUtils]: Spent 22.06s on a formula simplification. DAG size of input: 64 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:32:07,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:32:25,420 WARN L233 SmtUtils]: Spent 15.08s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:32:47,944 WARN L233 SmtUtils]: Spent 22.14s on a formula simplification. DAG size of input: 62 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:33:07,248 WARN L233 SmtUtils]: Spent 18.03s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:33:08,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:09,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:11,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:12,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:14,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:16,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:17,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:19,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:20,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:22,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:23,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:25,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:26,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:29,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:46,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:47,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:49,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:51,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:52,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:54,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:55,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:56,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:33:58,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:00,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:02,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:04,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:06,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:07,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:08,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:10,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:12,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:14,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:19,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:20,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:23,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:24,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:25,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:26,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:28,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:30,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:32,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:34,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:36,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:37,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:38,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:40,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:42,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:44,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:46,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:48,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:54,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:55,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:56,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:58,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:34:59,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:35:01,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:35:02,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]