./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R --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 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- 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-38b53e6 [2022-11-25 17:25:59,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:25:59,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:25:59,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:25:59,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:25:59,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:25:59,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:25:59,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:25:59,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:25:59,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:25:59,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:25:59,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:25:59,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:25:59,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:25:59,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:25:59,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:25:59,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:25:59,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:25:59,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:25:59,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:25:59,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:25:59,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:25:59,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:25:59,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:25:59,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:25:59,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:25:59,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:25:59,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:25:59,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:25:59,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:25:59,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:25:59,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:25:59,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:25:59,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:25:59,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:25:59,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:25:59,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:25:59,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:25:59,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:25:59,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:25:59,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:25:59,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:25:59,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:25:59,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:25:59,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:25:59,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:25:59,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:25:59,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:25:59,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:25:59,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:25:59,656 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:25:59,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:25:59,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:25:59,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:25:59,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:25:59,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:25:59,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:25:59,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:25:59,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:25:59,658 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:25:59,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:25:59,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:25:59,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:25:59,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:25:59,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:25:59,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:25:59,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:25:59,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:25:59,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:25:59,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:25:59,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:25:59,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:25:59,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:25:59,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:25:59,660 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:25:59,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:25:59,661 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_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2022-11-25 17:25:59,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:25:59,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:25:59,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:25:59,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:25:59,968 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:25:59,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-11-25 17:26:03,083 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:26:03,341 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:26:03,342 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-11-25 17:26:03,349 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/data/6f526643d/d676f3129bb2413789ec0ac81c362738/FLAG021a84ae3 [2022-11-25 17:26:03,364 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/data/6f526643d/d676f3129bb2413789ec0ac81c362738 [2022-11-25 17:26:03,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:26:03,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:26:03,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:26:03,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:26:03,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:26:03,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e98c9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03, skipping insertion in model container [2022-11-25 17:26:03,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:26:03,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:26:03,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:26:03,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:26:03,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:26:03,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:26:03,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:26:03,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:26:03,647 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_4f2dd76e-ba8a-4d9b-9397-ac534530911a/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-11-25 17:26:03,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:26:03,674 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:26:03,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:26:03,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:26:03,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:26:03,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:26:03,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:26:03,696 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:26:03,707 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_4f2dd76e-ba8a-4d9b-9397-ac534530911a/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-11-25 17:26:03,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:26:03,731 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:26:03,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03 WrapperNode [2022-11-25 17:26:03,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:26:03,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:26:03,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:26:03,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:26:03,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,778 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 232 [2022-11-25 17:26:03,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:26:03,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:26:03,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:26:03,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:26:03,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:26:03,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:26:03,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:26:03,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:26:03,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (1/1) ... [2022-11-25 17:26:03,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:26:03,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:03,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:26:03,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:26:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:26:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:26:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:26:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:26:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:26:03,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:26:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:26:03,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:26:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:26:03,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:26:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:26:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:26:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:26:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:26:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:26:03,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:26:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:26:03,944 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:26:04,091 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:26:04,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:26:04,679 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:26:04,801 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:26:04,802 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 17:26:04,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:26:04 BoogieIcfgContainer [2022-11-25 17:26:04,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:26:04,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:26:04,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:26:04,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:26:04,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:26:03" (1/3) ... [2022-11-25 17:26:04,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5b518a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:26:04, skipping insertion in model container [2022-11-25 17:26:04,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:03" (2/3) ... [2022-11-25 17:26:04,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5b518a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:26:04, skipping insertion in model container [2022-11-25 17:26:04,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:26:04" (3/3) ... [2022-11-25 17:26:04,818 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2022-11-25 17:26:04,828 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:26:04,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:26:04,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:26:04,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:26:04,955 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:26:05,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 315 transitions, 654 flow [2022-11-25 17:26:05,241 INFO L130 PetriNetUnfolder]: 27/312 cut-off events. [2022-11-25 17:26:05,244 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:26:05,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 312 events. 27/312 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 244. Up to 3 conditions per place. [2022-11-25 17:26:05,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 315 transitions, 654 flow [2022-11-25 17:26:05,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 301 transitions, 620 flow [2022-11-25 17:26:05,273 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:26:05,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 301 transitions, 620 flow [2022-11-25 17:26:05,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 301 transitions, 620 flow [2022-11-25 17:26:05,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 301 transitions, 620 flow [2022-11-25 17:26:05,359 INFO L130 PetriNetUnfolder]: 27/301 cut-off events. [2022-11-25 17:26:05,359 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:26:05,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 301 events. 27/301 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 244. Up to 3 conditions per place. [2022-11-25 17:26:05,375 INFO L119 LiptonReduction]: Number of co-enabled transitions 2634 [2022-11-25 17:26:16,630 INFO L134 LiptonReduction]: Checked pairs total: 4340 [2022-11-25 17:26:16,631 INFO L136 LiptonReduction]: Total number of compositions: 328 [2022-11-25 17:26:16,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:26:16,653 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;@371211b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:26:16,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 17:26:16,664 INFO L130 PetriNetUnfolder]: 8/34 cut-off events. [2022-11-25 17:26:16,664 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:26:16,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:16,665 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:16,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:16,671 INFO L85 PathProgramCache]: Analyzing trace with hash 814937606, now seen corresponding path program 1 times [2022-11-25 17:26:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:16,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811782113] [2022-11-25 17:26:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:16,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:17,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:17,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811782113] [2022-11-25 17:26:17,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811782113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:17,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:17,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:17,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830023275] [2022-11-25 17:26:17,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:17,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:17,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:17,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:17,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 643 [2022-11-25 17:26:17,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:17,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:17,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 643 [2022-11-25 17:26:17,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:17,648 INFO L130 PetriNetUnfolder]: 824/1087 cut-off events. [2022-11-25 17:26:17,648 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-25 17:26:17,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 1087 events. 824/1087 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3798 event pairs, 369 based on Foata normal form. 0/623 useless extension candidates. Maximal degree in co-relation 1951. Up to 1070 conditions per place. [2022-11-25 17:26:17,658 INFO L137 encePairwiseOnDemand]: 640/643 looper letters, 31 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2022-11-25 17:26:17,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 156 flow [2022-11-25 17:26:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 862 transitions. [2022-11-25 17:26:17,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44686365992742355 [2022-11-25 17:26:17,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 862 transitions. [2022-11-25 17:26:17,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 862 transitions. [2022-11-25 17:26:17,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:17,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 862 transitions. [2022-11-25 17:26:17,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:17,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:17,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:17,699 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 3 states and 862 transitions. [2022-11-25 17:26:17,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 156 flow [2022-11-25 17:26:17,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 144 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:26:17,705 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 88 flow [2022-11-25 17:26:17,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2022-11-25 17:26:17,710 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2022-11-25 17:26:17,710 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 88 flow [2022-11-25 17:26:17,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:17,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:17,711 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:17,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:26:17,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1667309362, now seen corresponding path program 1 times [2022-11-25 17:26:17,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:17,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607873652] [2022-11-25 17:26:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:26:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:17,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607873652] [2022-11-25 17:26:17,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607873652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:17,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:17,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:26:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158959234] [2022-11-25 17:26:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:17,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:17,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 643 [2022-11-25 17:26:17,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:17,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:17,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 643 [2022-11-25 17:26:17,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:18,191 INFO L130 PetriNetUnfolder]: 824/1089 cut-off events. [2022-11-25 17:26:18,192 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:26:18,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 1089 events. 824/1089 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3803 event pairs, 369 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 2188. Up to 1069 conditions per place. [2022-11-25 17:26:18,198 INFO L137 encePairwiseOnDemand]: 636/643 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2022-11-25 17:26:18,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 162 flow [2022-11-25 17:26:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:26:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:26:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1133 transitions. [2022-11-25 17:26:18,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4405132192846034 [2022-11-25 17:26:18,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1133 transitions. [2022-11-25 17:26:18,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1133 transitions. [2022-11-25 17:26:18,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:18,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1133 transitions. [2022-11-25 17:26:18,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:18,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 643.0) internal successors, (3215), 5 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:18,213 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 643.0) internal successors, (3215), 5 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:18,213 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 88 flow. Second operand 4 states and 1133 transitions. [2022-11-25 17:26:18,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 162 flow [2022-11-25 17:26:18,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:18,215 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 112 flow [2022-11-25 17:26:18,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2022-11-25 17:26:18,216 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2022-11-25 17:26:18,216 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 112 flow [2022-11-25 17:26:18,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:18,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:18,217 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:18,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:26:18,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:18,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:18,218 INFO L85 PathProgramCache]: Analyzing trace with hash -447151068, now seen corresponding path program 1 times [2022-11-25 17:26:18,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:18,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952684260] [2022-11-25 17:26:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:18,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:26:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:18,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952684260] [2022-11-25 17:26:18,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952684260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:18,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:18,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891247725] [2022-11-25 17:26:18,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:18,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:18,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:18,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:18,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:18,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 643 [2022-11-25 17:26:18,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:18,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:18,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 643 [2022-11-25 17:26:18,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:18,997 INFO L130 PetriNetUnfolder]: 1394/1839 cut-off events. [2022-11-25 17:26:18,998 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-25 17:26:19,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3728 conditions, 1839 events. 1394/1839 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7147 event pairs, 266 based on Foata normal form. 1/1091 useless extension candidates. Maximal degree in co-relation 3708. Up to 1167 conditions per place. [2022-11-25 17:26:19,009 INFO L137 encePairwiseOnDemand]: 638/643 looper letters, 52 selfloop transitions, 4 changer transitions 1/60 dead transitions. [2022-11-25 17:26:19,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 60 transitions, 275 flow [2022-11-25 17:26:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2022-11-25 17:26:19,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46397096941420424 [2022-11-25 17:26:19,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 895 transitions. [2022-11-25 17:26:19,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 895 transitions. [2022-11-25 17:26:19,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:19,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 895 transitions. [2022-11-25 17:26:19,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:19,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:19,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:19,020 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 112 flow. Second operand 3 states and 895 transitions. [2022-11-25 17:26:19,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 60 transitions, 275 flow [2022-11-25 17:26:19,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:19,023 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 137 flow [2022-11-25 17:26:19,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2022-11-25 17:26:19,025 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2022-11-25 17:26:19,025 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 137 flow [2022-11-25 17:26:19,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:19,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:19,026 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:19,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:26:19,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash -542408775, now seen corresponding path program 1 times [2022-11-25 17:26:19,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:19,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756133703] [2022-11-25 17:26:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:19,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:26:19,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:19,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756133703] [2022-11-25 17:26:19,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756133703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:19,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786215384] [2022-11-25 17:26:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:19,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:19,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:19,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:19,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:26:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:19,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:26:19,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:26:19,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:26:19,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786215384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:19,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:19,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 17:26:19,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691530213] [2022-11-25 17:26:19,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:19,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:26:19,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:26:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:26:20,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 643 [2022-11-25 17:26:20,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 137 flow. Second operand has 12 states, 12 states have (on average 266.9166666666667) internal successors, (3203), 12 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:20,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:20,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 643 [2022-11-25 17:26:20,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:20,896 INFO L130 PetriNetUnfolder]: 2869/4001 cut-off events. [2022-11-25 17:26:20,897 INFO L131 PetriNetUnfolder]: For 333/333 co-relation queries the response was YES. [2022-11-25 17:26:20,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8790 conditions, 4001 events. 2869/4001 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 19666 event pairs, 921 based on Foata normal form. 0/2798 useless extension candidates. Maximal degree in co-relation 4938. Up to 1369 conditions per place. [2022-11-25 17:26:20,919 INFO L137 encePairwiseOnDemand]: 632/643 looper letters, 132 selfloop transitions, 21 changer transitions 0/155 dead transitions. [2022-11-25 17:26:20,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 155 transitions, 783 flow [2022-11-25 17:26:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:26:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:26:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2784 transitions. [2022-11-25 17:26:20,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4329704510108865 [2022-11-25 17:26:20,927 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2784 transitions. [2022-11-25 17:26:20,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2784 transitions. [2022-11-25 17:26:20,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:20,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2784 transitions. [2022-11-25 17:26:20,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.4) internal successors, (2784), 10 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:20,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 643.0) internal successors, (7073), 11 states have internal predecessors, (7073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:20,950 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 643.0) internal successors, (7073), 11 states have internal predecessors, (7073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:20,950 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 137 flow. Second operand 10 states and 2784 transitions. [2022-11-25 17:26:20,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 155 transitions, 783 flow [2022-11-25 17:26:20,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 155 transitions, 769 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:20,955 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 286 flow [2022-11-25 17:26:20,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=286, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2022-11-25 17:26:20,956 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2022-11-25 17:26:20,957 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 286 flow [2022-11-25 17:26:20,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.9166666666667) internal successors, (3203), 12 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:20,958 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:20,958 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:20,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:21,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-25 17:26:21,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:21,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1204827913, now seen corresponding path program 1 times [2022-11-25 17:26:21,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:21,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796590648] [2022-11-25 17:26:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:21,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:26:21,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:21,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796590648] [2022-11-25 17:26:21,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796590648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751958585] [2022-11-25 17:26:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:21,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:21,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:21,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:21,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:26:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:21,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:26:21,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:26:21,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:26:21,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751958585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:21,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:21,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 17:26:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371305044] [2022-11-25 17:26:21,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:21,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:26:21,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:21,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:26:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:26:22,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 643 [2022-11-25 17:26:22,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 286 flow. Second operand has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:22,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:22,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 643 [2022-11-25 17:26:22,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:22,789 INFO L130 PetriNetUnfolder]: 1688/2334 cut-off events. [2022-11-25 17:26:22,789 INFO L131 PetriNetUnfolder]: For 646/727 co-relation queries the response was YES. [2022-11-25 17:26:22,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6081 conditions, 2334 events. 1688/2334 cut-off events. For 646/727 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9926 event pairs, 583 based on Foata normal form. 38/1678 useless extension candidates. Maximal degree in co-relation 5077. Up to 1362 conditions per place. [2022-11-25 17:26:22,806 INFO L137 encePairwiseOnDemand]: 632/643 looper letters, 44 selfloop transitions, 10 changer transitions 63/119 dead transitions. [2022-11-25 17:26:22,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 119 transitions, 701 flow [2022-11-25 17:26:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:26:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:26:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2755 transitions. [2022-11-25 17:26:22,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4284603421461897 [2022-11-25 17:26:22,813 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2755 transitions. [2022-11-25 17:26:22,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2755 transitions. [2022-11-25 17:26:22,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:22,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2755 transitions. [2022-11-25 17:26:22,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 275.5) internal successors, (2755), 10 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:22,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 643.0) internal successors, (7073), 11 states have internal predecessors, (7073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:22,876 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 643.0) internal successors, (7073), 11 states have internal predecessors, (7073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:22,876 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 286 flow. Second operand 10 states and 2755 transitions. [2022-11-25 17:26:22,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 119 transitions, 701 flow [2022-11-25 17:26:22,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 119 transitions, 679 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:22,885 INFO L231 Difference]: Finished difference. Result has 64 places, 44 transitions, 220 flow [2022-11-25 17:26:22,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=220, PETRI_PLACES=64, PETRI_TRANSITIONS=44} [2022-11-25 17:26:22,889 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2022-11-25 17:26:22,889 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 44 transitions, 220 flow [2022-11-25 17:26:22,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:22,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:22,891 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:22,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:23,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:23,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2087395527, now seen corresponding path program 2 times [2022-11-25 17:26:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:23,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347631449] [2022-11-25 17:26:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:23,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:26:23,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:23,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347631449] [2022-11-25 17:26:23,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347631449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:23,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458440478] [2022-11-25 17:26:23,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:26:23,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:23,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:23,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:23,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:26:23,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:26:23,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:23,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:26:23,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:26:23,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:26:23,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458440478] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:23,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:26:23,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-25 17:26:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614461342] [2022-11-25 17:26:23,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:23,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:26:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:23,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:26:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:26:23,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 643 [2022-11-25 17:26:23,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 44 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 268.3333333333333) internal successors, (1610), 6 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) [2022-11-25 17:26:23,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:23,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 643 [2022-11-25 17:26:23,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:24,313 INFO L130 PetriNetUnfolder]: 1682/2262 cut-off events. [2022-11-25 17:26:24,313 INFO L131 PetriNetUnfolder]: For 1179/1253 co-relation queries the response was YES. [2022-11-25 17:26:24,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6722 conditions, 2262 events. 1682/2262 cut-off events. For 1179/1253 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 9083 event pairs, 511 based on Foata normal form. 0/1784 useless extension candidates. Maximal degree in co-relation 6697. Up to 1698 conditions per place. [2022-11-25 17:26:24,330 INFO L137 encePairwiseOnDemand]: 638/643 looper letters, 57 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2022-11-25 17:26:24,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 419 flow [2022-11-25 17:26:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:26:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:26:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1637 transitions. [2022-11-25 17:26:24,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42431311560393986 [2022-11-25 17:26:24,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1637 transitions. [2022-11-25 17:26:24,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1637 transitions. [2022-11-25 17:26:24,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:24,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1637 transitions. [2022-11-25 17:26:24,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:24,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:24,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:24,348 INFO L175 Difference]: Start difference. First operand has 64 places, 44 transitions, 220 flow. Second operand 6 states and 1637 transitions. [2022-11-25 17:26:24,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 419 flow [2022-11-25 17:26:24,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 357 flow, removed 21 selfloop flow, removed 10 redundant places. [2022-11-25 17:26:24,356 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 193 flow [2022-11-25 17:26:24,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2022-11-25 17:26:24,357 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2022-11-25 17:26:24,357 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 193 flow [2022-11-25 17:26:24,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.3333333333333) internal successors, (1610), 6 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) [2022-11-25 17:26:24,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:24,358 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:24,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:26:24,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:24,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash -769795097, now seen corresponding path program 1 times [2022-11-25 17:26:24,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:24,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47361282] [2022-11-25 17:26:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:24,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:26:24,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:24,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47361282] [2022-11-25 17:26:24,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47361282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:24,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362019767] [2022-11-25 17:26:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:24,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:24,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:24,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:26:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:24,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:26:24,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:26:25,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:26:25,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362019767] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:25,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:26:25,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-25 17:26:25,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606422006] [2022-11-25 17:26:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:25,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:26:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:26:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:26:25,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 643 [2022-11-25 17:26:25,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 268.5) internal successors, (1611), 6 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:25,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:25,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 643 [2022-11-25 17:26:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:25,568 INFO L130 PetriNetUnfolder]: 1254/1688 cut-off events. [2022-11-25 17:26:25,569 INFO L131 PetriNetUnfolder]: For 489/614 co-relation queries the response was YES. [2022-11-25 17:26:25,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 1688 events. 1254/1688 cut-off events. For 489/614 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6076 event pairs, 380 based on Foata normal form. 175/1486 useless extension candidates. Maximal degree in co-relation 4339. Up to 1155 conditions per place. [2022-11-25 17:26:25,582 INFO L137 encePairwiseOnDemand]: 636/643 looper letters, 50 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2022-11-25 17:26:25,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 354 flow [2022-11-25 17:26:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:26:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:26:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1633 transitions. [2022-11-25 17:26:25,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4232763089683774 [2022-11-25 17:26:25,588 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1633 transitions. [2022-11-25 17:26:25,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1633 transitions. [2022-11-25 17:26:25,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:25,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1633 transitions. [2022-11-25 17:26:25,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:25,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:25,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:25,609 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 193 flow. Second operand 6 states and 1633 transitions. [2022-11-25 17:26:25,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 354 flow [2022-11-25 17:26:25,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 339 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-25 17:26:25,617 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 218 flow [2022-11-25 17:26:25,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2022-11-25 17:26:25,618 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2022-11-25 17:26:25,619 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 218 flow [2022-11-25 17:26:25,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.5) internal successors, (1611), 6 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:25,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:25,621 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:25,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:25,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:25,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1435638641, now seen corresponding path program 1 times [2022-11-25 17:26:25,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:25,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589758085] [2022-11-25 17:26:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:25,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:26,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:26,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589758085] [2022-11-25 17:26:26,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589758085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:26,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525416082] [2022-11-25 17:26:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:26,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:26,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:26,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:26,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:26:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:26,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:26:26,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:26,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:26,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525416082] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:26,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:26:26,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-25 17:26:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950277883] [2022-11-25 17:26:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:26,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:26:26,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:26,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:26:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:26:26,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 643 [2022-11-25 17:26:26,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:26,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:26,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 643 [2022-11-25 17:26:26,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:26,778 INFO L130 PetriNetUnfolder]: 1116/1528 cut-off events. [2022-11-25 17:26:26,779 INFO L131 PetriNetUnfolder]: For 816/1028 co-relation queries the response was YES. [2022-11-25 17:26:26,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4097 conditions, 1528 events. 1116/1528 cut-off events. For 816/1028 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5556 event pairs, 351 based on Foata normal form. 286/1475 useless extension candidates. Maximal degree in co-relation 4059. Up to 812 conditions per place. [2022-11-25 17:26:26,792 INFO L137 encePairwiseOnDemand]: 636/643 looper letters, 58 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2022-11-25 17:26:26,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 430 flow [2022-11-25 17:26:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:26:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:26:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1636 transitions. [2022-11-25 17:26:26,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42405391394504927 [2022-11-25 17:26:26,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1636 transitions. [2022-11-25 17:26:26,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1636 transitions. [2022-11-25 17:26:26,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:26,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1636 transitions. [2022-11-25 17:26:26,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:26,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:26,810 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:26,810 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 218 flow. Second operand 6 states and 1636 transitions. [2022-11-25 17:26:26,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 430 flow [2022-11-25 17:26:26,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 416 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:26:26,815 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 245 flow [2022-11-25 17:26:26,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2022-11-25 17:26:26,816 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2022-11-25 17:26:26,816 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 245 flow [2022-11-25 17:26:26,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:26,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:26,817 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:26,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:27,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 17:26:27,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:26:27,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1055276810, now seen corresponding path program 1 times [2022-11-25 17:26:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:27,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149525092] [2022-11-25 17:26:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 17:26:29,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:29,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149525092] [2022-11-25 17:26:29,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149525092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:29,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695358857] [2022-11-25 17:26:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:29,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:29,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:29,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:29,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2dd76e-ba8a-4d9b-9397-ac534530911a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:26:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:29,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-25 17:26:29,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:29,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 [2022-11-25 17:26:30,012 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:26:30,013 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 11 treesize of output 11 [2022-11-25 17:26:30,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:26:30,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2022-11-25 17:26:30,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:30,652 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 [2022-11-25 17:26:30,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:26:30,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:26:31,005 INFO L321 Elim1Store]: treesize reduction 31, result has 40.4 percent of original size [2022-11-25 17:26:31,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 48 [2022-11-25 17:26:31,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:31,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:31,371 INFO L321 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2022-11-25 17:26:31,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 133 treesize of output 148 [2022-11-25 17:26:34,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:26:34,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 340 treesize of output 892 [2022-11-25 17:26:56,092 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 26 treesize of output 20 [2022-11-25 17:27:06,315 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 26 treesize of output 20 [2022-11-25 17:27:07,888 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 26 treesize of output 20 [2022-11-25 17:27:09,987 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 26 treesize of output 20 [2022-11-25 17:27:10,728 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 26 treesize of output 20 [2022-11-25 17:27:13,838 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 26 treesize of output 20 [2022-11-25 17:27:14,024 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 26 treesize of output 20 [2022-11-25 17:27:14,099 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 26 treesize of output 20 [2022-11-25 17:27:14,298 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 26 treesize of output 20 [2022-11-25 17:27:14,382 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 26 treesize of output 20 [2022-11-25 17:30:15,242 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 21 treesize of output 17 [2022-11-25 17:30:18,309 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 21 treesize of output 17 [2022-11-25 17:30:18,492 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 19 treesize of output 15 [2022-11-25 17:30:19,857 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 19 treesize of output 15 [2022-11-25 17:30:20,534 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 26 treesize of output 20 [2022-11-25 17:30:20,692 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 26 treesize of output 20 [2022-11-25 17:30:20,781 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 19 treesize of output 15 [2022-11-25 17:30:20,802 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 19 treesize of output 15 [2022-11-25 17:30:20,822 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 19 treesize of output 15 [2022-11-25 17:30:20,839 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 34 treesize of output 22 [2022-11-25 17:30:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 17:30:20,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:30:21,376 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse1 (+ c_~C~0.offset 4)) (.cse6 (+ c_~maxa~0 c_~maxb~0)) (.cse3 (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset))) (and (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse2 (select (select .cse0 c_~B~0.base) .cse3))) (or (<= (select (select .cse0 c_~C~0.base) .cse1) (+ .cse2 c_~maxa~0)) (not (<= c_~maxb~0 .cse2)))))) (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3))) (or (<= c_~maxc~0 (+ .cse4 c_~maxa~0)) (not (<= c_~maxb~0 .cse4))))) (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse5 c_~C~0.base) .cse1) .cse6) (<= c_~maxb~0 (select (select .cse5 c_~B~0.base) .cse3))))) (or (<= c_~maxc~0 .cse6) (forall ((v_ArrVal_505 (Array Int Int))) (<= c_~maxb~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3)))))) (<= c_~maxa~0 |c_thread1Thread1of1ForFork2_#t~mem2|)) is different from false [2022-11-25 17:30:24,226 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse3 (+ c_~maxa~0 c_~maxb~0)) (.cse0 (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset 4)) (select (select |c_#memory_int| c_~B~0.base) (+ 4 c_~B~0.offset)))) (.cse5 (select |c_#memory_int| c_~C~0.base)) (.cse4 (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset))) (and (forall ((v_ArrVal_503 Int)) (or (< .cse0 v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse2 (+ ~C~0.offset 4))) (let ((.cse1 (store (store |c_#memory_int| c_~C~0.base (store .cse5 .cse2 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse1 c_~C~0.base) .cse2) .cse3) (<= c_~maxb~0 (select (select .cse1 c_~B~0.base) .cse4)))))))) (or (<= c_~maxc~0 .cse3) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int)) (v_ArrVal_503 Int)) (or (< .cse0 v_ArrVal_503) (<= c_~maxb~0 (select (select (store (store |c_#memory_int| c_~C~0.base (store .cse5 (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse4))))) (forall ((v_ArrVal_503 Int)) (or (< .cse0 v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse7 (+ ~C~0.offset 4))) (let ((.cse6 (store (store |c_#memory_int| c_~C~0.base (store .cse5 .cse7 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse8 (select (select .cse6 c_~B~0.base) .cse4))) (or (<= (select (select .cse6 c_~C~0.base) .cse7) (+ .cse8 c_~maxa~0)) (not (<= c_~maxb~0 .cse8))))))))) (forall ((v_ArrVal_503 Int)) (or (< .cse0 v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse9 (select (select (store (store |c_#memory_int| c_~C~0.base (store .cse5 (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse4))) (or (not (<= c_~maxb~0 .cse9)) (<= c_~maxc~0 (+ .cse9 c_~maxa~0))))))))) (<= c_~maxa~0 |c_thread1Thread1of1ForFork2_#t~mem2|)) is different from false [2022-11-25 17:30:24,394 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse2 (+ c_~maxa~0 c_~maxb~0)) (.cse3 (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)) (.cse5 (+ 4 c_~B~0.offset)) (.cse6 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse1 (+ ~C~0.offset 4))) (let ((.cse0 (store (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) .cse1 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse0 c_~C~0.base) .cse1) .cse2) (<= c_~maxb~0 (select (select .cse0 c_~B~0.base) .cse3)))))) (< (+ (select (select .cse4 c_~B~0.base) .cse5) (select (select .cse4 c_~A~0.base) .cse6)) v_ArrVal_503)))) (or (forall ((v_ArrVal_502 (Array Int Int)) (~C~0.offset Int) (v_ArrVal_505 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (<= c_~maxb~0 (select (select (store (store .cse7 c_~C~0.base (store (select .cse7 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3)) (< (+ (select (select .cse7 c_~B~0.base) .cse5) (select (select .cse7 c_~A~0.base) .cse6)) v_ArrVal_503)))) (<= c_~maxc~0 .cse2)) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (< (+ (select (select .cse8 c_~B~0.base) .cse5) (select (select .cse8 c_~A~0.base) .cse6)) v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse9 (select (select (store (store .cse8 c_~C~0.base (store (select .cse8 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3))) (or (not (<= c_~maxb~0 .cse9)) (<= c_~maxc~0 (+ c_~maxa~0 .cse9)))))))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse11 (+ ~C~0.offset 4))) (let ((.cse10 (store (store .cse13 c_~C~0.base (store (select .cse13 c_~C~0.base) .cse11 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse12 (select (select .cse10 c_~B~0.base) .cse3))) (or (<= (select (select .cse10 c_~C~0.base) .cse11) (+ c_~maxa~0 .cse12)) (not (<= c_~maxb~0 .cse12))))))) (< (+ (select (select .cse13 c_~B~0.base) .cse5) (select (select .cse13 c_~A~0.base) .cse6)) v_ArrVal_503)))))) (<= c_~maxa~0 |c_thread1Thread1of1ForFork2_#t~mem2|)) is different from false [2022-11-25 17:30:24,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:30:24,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 8357 treesize of output 8211 [2022-11-25 17:30:24,706 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 8175 treesize of output 8103 [2022-11-25 17:30:24,800 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 8103 treesize of output 7959 [2022-11-25 17:30:24,947 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:30:24,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 8039 treesize of output 8014 [2022-11-25 17:30:25,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:30:25,104 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 7981 treesize of output 7060 [2022-11-25 17:30:25,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:30:25,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 8053 treesize of output 7620 [2022-11-25 17:30:25,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:30:25,508 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 7587 treesize of output 7402 [2022-11-25 17:30:25,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:30:25,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 7547 treesize of output 7468 [2022-11-25 17:30:25,962 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:30:25,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 7521 treesize of output 7478