./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN --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 cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a --- 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-6b4ec56 [2022-11-20 10:44:47,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:44:47,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:44:47,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:44:47,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:44:47,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:44:47,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:44:47,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:44:47,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:44:47,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:44:47,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:44:47,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:44:47,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:44:47,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:44:47,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:44:47,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:44:47,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:44:47,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:44:47,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:44:47,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:44:47,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:44:47,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:44:47,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:44:47,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:44:47,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:44:47,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:44:47,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:44:47,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:44:47,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:44:47,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:44:47,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:44:47,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:44:47,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:44:47,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:44:47,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:44:47,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:44:47,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:44:47,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:44:47,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:44:47,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:44:47,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:44:47,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:44:47,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:44:47,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:44:47,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:44:47,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:44:47,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:44:47,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:44:47,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:44:47,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:44:47,762 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:44:47,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:44:47,763 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:44:47,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:44:47,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:44:47,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:44:47,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:44:47,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:44:47,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:44:47,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:44:47,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:44:47,765 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:44:47,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:44:47,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:44:47,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:44:47,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:44:47,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:47,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:44:47,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:44:47,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:44:47,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:44:47,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:44:47,768 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:44:47,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:44:47,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:44:47,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a [2022-11-20 10:44:48,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:44:48,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:44:48,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:44:48,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:44:48,057 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:44:48,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2022-11-20 10:44:51,282 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:44:51,526 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:44:51,527 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2022-11-20 10:44:51,534 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/data/284194af0/f92b7a9b44964b6287399b80de70179b/FLAG238d6808a [2022-11-20 10:44:51,860 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/data/284194af0/f92b7a9b44964b6287399b80de70179b [2022-11-20 10:44:51,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:44:51,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:44:51,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:51,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:44:51,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:44:51,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1d3025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51, skipping insertion in model container [2022-11-20 10:44:51,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:44:51,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:44:52,066 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_ed13a192-44ad-4746-9b8c-37f30895a776/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-11-20 10:44:52,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:52,086 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:44:52,110 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_ed13a192-44ad-4746-9b8c-37f30895a776/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-11-20 10:44:52,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:52,129 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:44:52,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52 WrapperNode [2022-11-20 10:44:52,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:52,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:52,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:44:52,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:44:52,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,174 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 191 [2022-11-20 10:44:52,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:52,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:44:52,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:44:52,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:44:52,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,214 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:44:52,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:44:52,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:44:52,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:44:52,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:52,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:52,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:44:52,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:44:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:44:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:44:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:44:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:44:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:44:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:44:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:44:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:44:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:44:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:44:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:44:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:44:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:44:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:44:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:44:52,329 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:44:52,435 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:44:52,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:44:52,842 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:44:52,946 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:44:52,946 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:44:52,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:52 BoogieIcfgContainer [2022-11-20 10:44:52,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:44:52,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:44:52,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:44:52,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:44:52,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:44:51" (1/3) ... [2022-11-20 10:44:52,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746f3af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:52, skipping insertion in model container [2022-11-20 10:44:52,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (2/3) ... [2022-11-20 10:44:52,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746f3af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:52, skipping insertion in model container [2022-11-20 10:44:52,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:52" (3/3) ... [2022-11-20 10:44:52,959 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2022-11-20 10:44:52,969 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:44:52,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:44:52,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:44:52,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:44:53,064 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:44:53,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-11-20 10:44:53,230 INFO L130 PetriNetUnfolder]: 15/187 cut-off events. [2022-11-20 10:44:53,231 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:44:53,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-11-20 10:44:53,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 189 transitions, 394 flow [2022-11-20 10:44:53,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 368 flow [2022-11-20 10:44:53,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:44:53,262 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;@4bcb1ef6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:44:53,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 10:44:53,314 INFO L130 PetriNetUnfolder]: 15/177 cut-off events. [2022-11-20 10:44:53,315 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:44:53,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:53,316 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:53,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:44:53,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:53,323 INFO L85 PathProgramCache]: Analyzing trace with hash -391978347, now seen corresponding path program 1 times [2022-11-20 10:44:53,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:53,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490069426] [2022-11-20 10:44:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:53,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:53,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:53,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490069426] [2022-11-20 10:44:53,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490069426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:53,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:53,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:44:53,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529246362] [2022-11-20 10:44:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:53,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:44:53,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:44:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:44:53,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 189 [2022-11-20 10:44:53,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 368 flow. Second operand has 2 states, 2 states have (on average 175.0) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:53,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 189 [2022-11-20 10:44:53,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:53,942 INFO L130 PetriNetUnfolder]: 14/193 cut-off events. [2022-11-20 10:44:53,942 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-20 10:44:53,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 193 events. 14/193 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 3 based on Foata normal form. 15/194 useless extension candidates. Maximal degree in co-relation 147. Up to 20 conditions per place. [2022-11-20 10:44:53,952 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 7 selfloop transitions, 0 changer transitions 6/168 dead transitions. [2022-11-20 10:44:53,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 168 transitions, 362 flow [2022-11-20 10:44:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:44:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:44:53,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 359 transitions. [2022-11-20 10:44:53,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9497354497354498 [2022-11-20 10:44:53,975 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 359 transitions. [2022-11-20 10:44:53,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 359 transitions. [2022-11-20 10:44:53,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:53,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 359 transitions. [2022-11-20 10:44:53,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,997 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,999 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 368 flow. Second operand 2 states and 359 transitions. [2022-11-20 10:44:54,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 168 transitions, 362 flow [2022-11-20 10:44:54,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 168 transitions, 354 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:44:54,013 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 328 flow [2022-11-20 10:44:54,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2022-11-20 10:44:54,022 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-11-20 10:44:54,023 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 328 flow [2022-11-20 10:44:54,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 175.0) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:54,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:54,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:44:54,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:44:54,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:54,028 INFO L85 PathProgramCache]: Analyzing trace with hash 962025419, now seen corresponding path program 1 times [2022-11-20 10:44:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:54,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944361374] [2022-11-20 10:44:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:54,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:54,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:54,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944361374] [2022-11-20 10:44:54,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944361374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:54,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:54,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:44:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425171443] [2022-11-20 10:44:54,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:54,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:44:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:54,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:44:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:44:54,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 189 [2022-11-20 10:44:54,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:54,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 189 [2022-11-20 10:44:54,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:54,928 INFO L130 PetriNetUnfolder]: 56/309 cut-off events. [2022-11-20 10:44:54,928 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:44:54,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 309 events. 56/309 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 851 event pairs, 12 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 445. Up to 64 conditions per place. [2022-11-20 10:44:54,934 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 45 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-11-20 10:44:54,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 171 transitions, 447 flow [2022-11-20 10:44:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:44:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:44:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-11-20 10:44:54,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2022-11-20 10:44:54,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-11-20 10:44:54,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-11-20 10:44:54,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:54,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-11-20 10:44:54,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,949 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,949 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 328 flow. Second operand 6 states and 837 transitions. [2022-11-20 10:44:54,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 171 transitions, 447 flow [2022-11-20 10:44:54,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 171 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:44:54,956 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 346 flow [2022-11-20 10:44:54,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2022-11-20 10:44:54,958 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-11-20 10:44:54,958 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 346 flow [2022-11-20 10:44:54,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:54,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:44:54,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:44:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash 721079469, now seen corresponding path program 1 times [2022-11-20 10:44:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:54,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812934704] [2022-11-20 10:44:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:55,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:55,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812934704] [2022-11-20 10:44:55,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812934704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:55,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:55,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:44:55,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003369118] [2022-11-20 10:44:55,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:55,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:44:55,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:55,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:44:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:44:55,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 189 [2022-11-20 10:44:55,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:55,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 189 [2022-11-20 10:44:55,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:55,563 INFO L130 PetriNetUnfolder]: 57/353 cut-off events. [2022-11-20 10:44:55,563 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-20 10:44:55,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 353 events. 57/353 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 969 event pairs, 12 based on Foata normal form. 4/338 useless extension candidates. Maximal degree in co-relation 525. Up to 60 conditions per place. [2022-11-20 10:44:55,565 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 46 selfloop transitions, 8 changer transitions 7/182 dead transitions. [2022-11-20 10:44:55,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 182 transitions, 511 flow [2022-11-20 10:44:55,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:44:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:44:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1158 transitions. [2022-11-20 10:44:55,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-11-20 10:44:55,569 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1158 transitions. [2022-11-20 10:44:55,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1158 transitions. [2022-11-20 10:44:55,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:55,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1158 transitions. [2022-11-20 10:44:55,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.75) internal successors, (1158), 8 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,577 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,577 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 346 flow. Second operand 8 states and 1158 transitions. [2022-11-20 10:44:55,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 182 transitions, 511 flow [2022-11-20 10:44:55,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 182 transitions, 501 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:44:55,585 INFO L231 Difference]: Finished difference. Result has 172 places, 164 transitions, 364 flow [2022-11-20 10:44:55,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=172, PETRI_TRANSITIONS=164} [2022-11-20 10:44:55,588 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-11-20 10:44:55,588 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 164 transitions, 364 flow [2022-11-20 10:44:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:55,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:55,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:44:55,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:44:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1872479968, now seen corresponding path program 1 times [2022-11-20 10:44:55,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:55,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285209735] [2022-11-20 10:44:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:55,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:44:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:55,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285209735] [2022-11-20 10:44:55,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285209735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:55,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:55,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:44:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699719401] [2022-11-20 10:44:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:55,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:44:55,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:55,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:44:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:44:55,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 189 [2022-11-20 10:44:55,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 164 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:55,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 189 [2022-11-20 10:44:55,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:56,076 INFO L130 PetriNetUnfolder]: 119/471 cut-off events. [2022-11-20 10:44:56,076 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-20 10:44:56,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 471 events. 119/471 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1854 event pairs, 14 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 760. Up to 80 conditions per place. [2022-11-20 10:44:56,080 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 32 selfloop transitions, 9 changer transitions 0/184 dead transitions. [2022-11-20 10:44:56,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 184 transitions, 498 flow [2022-11-20 10:44:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:44:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:44:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 831 transitions. [2022-11-20 10:44:56,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8793650793650793 [2022-11-20 10:44:56,083 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 831 transitions. [2022-11-20 10:44:56,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 831 transitions. [2022-11-20 10:44:56,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:56,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 831 transitions. [2022-11-20 10:44:56,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,089 INFO L175 Difference]: Start difference. First operand has 172 places, 164 transitions, 364 flow. Second operand 5 states and 831 transitions. [2022-11-20 10:44:56,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 184 transitions, 498 flow [2022-11-20 10:44:56,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 184 transitions, 478 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 10:44:56,097 INFO L231 Difference]: Finished difference. Result has 172 places, 170 transitions, 406 flow [2022-11-20 10:44:56,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=172, PETRI_TRANSITIONS=170} [2022-11-20 10:44:56,099 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-11-20 10:44:56,106 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 170 transitions, 406 flow [2022-11-20 10:44:56,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:56,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:56,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:44:56,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:44:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1416524864, now seen corresponding path program 2 times [2022-11-20 10:44:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:56,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684047936] [2022-11-20 10:44:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:44:56,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:56,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684047936] [2022-11-20 10:44:56,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684047936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:56,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:56,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:44:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266911001] [2022-11-20 10:44:56,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:56,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:44:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:44:56,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:44:56,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 189 [2022-11-20 10:44:56,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 170 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:56,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 189 [2022-11-20 10:44:56,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:56,734 INFO L130 PetriNetUnfolder]: 77/411 cut-off events. [2022-11-20 10:44:56,734 INFO L131 PetriNetUnfolder]: For 165/166 co-relation queries the response was YES. [2022-11-20 10:44:56,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 411 events. 77/411 cut-off events. For 165/166 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1480 event pairs, 16 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 713. Up to 70 conditions per place. [2022-11-20 10:44:56,738 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 43 selfloop transitions, 2 changer transitions 4/182 dead transitions. [2022-11-20 10:44:56,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 182 transitions, 552 flow [2022-11-20 10:44:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:44:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:44:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 734 transitions. [2022-11-20 10:44:56,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7767195767195767 [2022-11-20 10:44:56,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 734 transitions. [2022-11-20 10:44:56,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 734 transitions. [2022-11-20 10:44:56,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:56,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 734 transitions. [2022-11-20 10:44:56,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,747 INFO L175 Difference]: Start difference. First operand has 172 places, 170 transitions, 406 flow. Second operand 5 states and 734 transitions. [2022-11-20 10:44:56,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 182 transitions, 552 flow [2022-11-20 10:44:56,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 182 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:44:56,754 INFO L231 Difference]: Finished difference. Result has 179 places, 171 transitions, 422 flow [2022-11-20 10:44:56,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=179, PETRI_TRANSITIONS=171} [2022-11-20 10:44:56,757 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 9 predicate places. [2022-11-20 10:44:56,757 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 171 transitions, 422 flow [2022-11-20 10:44:56,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:56,758 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:56,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:44:56,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:44:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash -370848198, now seen corresponding path program 1 times [2022-11-20 10:44:56,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:56,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563501526] [2022-11-20 10:44:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:56,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:44:57,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:57,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563501526] [2022-11-20 10:44:57,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563501526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:57,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:57,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:44:57,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031864728] [2022-11-20 10:44:57,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:57,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:44:57,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:44:57,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:44:57,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 189 [2022-11-20 10:44:57,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 171 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:57,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 189 [2022-11-20 10:44:57,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:57,167 INFO L130 PetriNetUnfolder]: 62/418 cut-off events. [2022-11-20 10:44:57,167 INFO L131 PetriNetUnfolder]: For 163/166 co-relation queries the response was YES. [2022-11-20 10:44:57,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 418 events. 62/418 cut-off events. For 163/166 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1487 event pairs, 12 based on Foata normal form. 7/403 useless extension candidates. Maximal degree in co-relation 709. Up to 86 conditions per place. [2022-11-20 10:44:57,170 INFO L137 encePairwiseOnDemand]: 186/189 looper letters, 25 selfloop transitions, 2 changer transitions 2/181 dead transitions. [2022-11-20 10:44:57,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 531 flow [2022-11-20 10:44:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:44:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:44:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-11-20 10:44:57,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.908289241622575 [2022-11-20 10:44:57,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-11-20 10:44:57,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-11-20 10:44:57,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:57,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-11-20 10:44:57,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,176 INFO L175 Difference]: Start difference. First operand has 179 places, 171 transitions, 422 flow. Second operand 3 states and 515 transitions. [2022-11-20 10:44:57,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 181 transitions, 531 flow [2022-11-20 10:44:57,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 181 transitions, 525 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 10:44:57,182 INFO L231 Difference]: Finished difference. Result has 177 places, 172 transitions, 428 flow [2022-11-20 10:44:57,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=177, PETRI_TRANSITIONS=172} [2022-11-20 10:44:57,183 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 7 predicate places. [2022-11-20 10:44:57,183 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 172 transitions, 428 flow [2022-11-20 10:44:57,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:57,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:57,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:44:57,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:44:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1626638925, now seen corresponding path program 1 times [2022-11-20 10:44:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:57,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900681766] [2022-11-20 10:44:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:57,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:44:57,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:57,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900681766] [2022-11-20 10:44:57,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900681766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:57,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:57,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:44:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404053844] [2022-11-20 10:44:57,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:57,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:44:57,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:44:57,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:44:57,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 189 [2022-11-20 10:44:57,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 172 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:57,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 189 [2022-11-20 10:44:57,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:57,638 INFO L130 PetriNetUnfolder]: 63/552 cut-off events. [2022-11-20 10:44:57,639 INFO L131 PetriNetUnfolder]: For 211/217 co-relation queries the response was YES. [2022-11-20 10:44:57,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 552 events. 63/552 cut-off events. For 211/217 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2124 event pairs, 19 based on Foata normal form. 6/531 useless extension candidates. Maximal degree in co-relation 952. Up to 94 conditions per place. [2022-11-20 10:44:57,642 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 34 selfloop transitions, 8 changer transitions 22/198 dead transitions. [2022-11-20 10:44:57,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 198 transitions, 642 flow [2022-11-20 10:44:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:44:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:44:57,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1361 transitions. [2022-11-20 10:44:57,646 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8001175778953556 [2022-11-20 10:44:57,646 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1361 transitions. [2022-11-20 10:44:57,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1361 transitions. [2022-11-20 10:44:57,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:57,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1361 transitions. [2022-11-20 10:44:57,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.22222222222223) internal successors, (1361), 9 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,654 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,654 INFO L175 Difference]: Start difference. First operand has 177 places, 172 transitions, 428 flow. Second operand 9 states and 1361 transitions. [2022-11-20 10:44:57,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 198 transitions, 642 flow [2022-11-20 10:44:57,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 198 transitions, 640 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:44:57,660 INFO L231 Difference]: Finished difference. Result has 186 places, 173 transitions, 454 flow [2022-11-20 10:44:57,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=454, PETRI_PLACES=186, PETRI_TRANSITIONS=173} [2022-11-20 10:44:57,661 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 16 predicate places. [2022-11-20 10:44:57,661 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 173 transitions, 454 flow [2022-11-20 10:44:57,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:57,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:57,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:44:57,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:44:57,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash -648559060, now seen corresponding path program 1 times [2022-11-20 10:44:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:57,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492255393] [2022-11-20 10:44:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:45:00,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:00,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492255393] [2022-11-20 10:45:00,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492255393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:00,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192584321] [2022-11-20 10:45:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:00,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:00,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:00,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:00,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:45:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:00,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-20 10:45:00,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:00,503 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 [2022-11-20 10:45:01,081 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:45:01,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:45:01,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 10:45:02,418 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 10:45:02,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:45:02,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-20 10:45:03,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:45:03,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-20 10:45:04,269 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 10:45:04,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 10 [2022-11-20 10:45:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:04,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:11,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:45:11,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 90 [2022-11-20 10:45:11,799 INFO L321 Elim1Store]: treesize reduction 9, result has 82.4 percent of original size [2022-11-20 10:45:11,800 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 13804 treesize of output 12821 [2022-11-20 10:45:11,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:45:12,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:45:12,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 12780 treesize of output 11276 [2022-11-20 10:45:12,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:45:12,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:45:12,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 11244 treesize of output 8204 [2022-11-20 10:45:12,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:45:12,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:45:12,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 8172 treesize of output 7436 [2022-11-20 10:54:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:12,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192584321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:12,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:12,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 33, 30] total 77 [2022-11-20 10:54:12,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087591571] [2022-11-20 10:54:12,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:12,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-11-20 10:54:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-11-20 10:54:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=889, Invalid=4872, Unknown=91, NotChecked=0, Total=5852 [2022-11-20 10:54:12,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 189 [2022-11-20 10:54:12,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 173 transitions, 454 flow. Second operand has 77 states, 77 states have (on average 58.753246753246756) internal successors, (4524), 77 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:12,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:12,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 189 [2022-11-20 10:54:12,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:23,900 INFO L130 PetriNetUnfolder]: 3775/7345 cut-off events. [2022-11-20 10:54:23,901 INFO L131 PetriNetUnfolder]: For 3886/3886 co-relation queries the response was YES. [2022-11-20 10:54:23,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17932 conditions, 7345 events. 3775/7345 cut-off events. For 3886/3886 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 57630 event pairs, 564 based on Foata normal form. 1/7060 useless extension candidates. Maximal degree in co-relation 17918. Up to 1646 conditions per place. [2022-11-20 10:54:23,959 INFO L137 encePairwiseOnDemand]: 138/189 looper letters, 424 selfloop transitions, 172 changer transitions 46/691 dead transitions. [2022-11-20 10:54:23,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 691 transitions, 3574 flow [2022-11-20 10:54:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-20 10:54:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2022-11-20 10:54:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 4592 transitions. [2022-11-20 10:54:23,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3328259766615931 [2022-11-20 10:54:23,973 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 4592 transitions. [2022-11-20 10:54:23,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 4592 transitions. [2022-11-20 10:54:23,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:23,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 4592 transitions. [2022-11-20 10:54:23,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 62.9041095890411) internal successors, (4592), 73 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 189.0) internal successors, (13986), 74 states have internal predecessors, (13986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,013 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 189.0) internal successors, (13986), 74 states have internal predecessors, (13986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,013 INFO L175 Difference]: Start difference. First operand has 186 places, 173 transitions, 454 flow. Second operand 73 states and 4592 transitions. [2022-11-20 10:54:24,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 691 transitions, 3574 flow [2022-11-20 10:54:24,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 691 transitions, 3540 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-20 10:54:24,042 INFO L231 Difference]: Finished difference. Result has 304 places, 331 transitions, 1897 flow [2022-11-20 10:54:24,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=1897, PETRI_PLACES=304, PETRI_TRANSITIONS=331} [2022-11-20 10:54:24,044 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 134 predicate places. [2022-11-20 10:54:24,044 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 331 transitions, 1897 flow [2022-11-20 10:54:24,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 58.753246753246756) internal successors, (4524), 77 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:24,046 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:24,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:24,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 10:54:24,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:54:24,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1362150592, now seen corresponding path program 2 times [2022-11-20 10:54:24,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:24,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259564770] [2022-11-20 10:54:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:24,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:26,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:26,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259564770] [2022-11-20 10:54:26,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259564770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:26,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662257167] [2022-11-20 10:54:26,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:54:26,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:26,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:26,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:26,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:54:26,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:54:26,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:26,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 10:54:26,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:28,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:54:28,613 INFO L321 Elim1Store]: treesize reduction 39, result has 7.1 percent of original size [2022-11-20 10:54:28,614 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 42 treesize of output 13 [2022-11-20 10:54:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:28,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:29,420 INFO L321 Elim1Store]: treesize reduction 15, result has 83.9 percent of original size [2022-11-20 10:54:29,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 103 [2022-11-20 10:54:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:31,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662257167] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:31,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:31,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 18] total 55 [2022-11-20 10:54:31,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738837922] [2022-11-20 10:54:31,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:31,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-20 10:54:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:31,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-20 10:54:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=2355, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 10:54:31,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 189 [2022-11-20 10:54:31,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 331 transitions, 1897 flow. Second operand has 55 states, 55 states have (on average 70.01818181818182) internal successors, (3851), 55 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:31,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 189 [2022-11-20 10:54:31,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:39,597 INFO L130 PetriNetUnfolder]: 9508/18418 cut-off events. [2022-11-20 10:54:39,597 INFO L131 PetriNetUnfolder]: For 204784/205673 co-relation queries the response was YES. [2022-11-20 10:54:39,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109904 conditions, 18418 events. 9508/18418 cut-off events. For 204784/205673 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 168998 event pairs, 1645 based on Foata normal form. 16/18325 useless extension candidates. Maximal degree in co-relation 109838. Up to 5340 conditions per place. [2022-11-20 10:54:39,840 INFO L137 encePairwiseOnDemand]: 143/189 looper letters, 665 selfloop transitions, 315 changer transitions 166/1201 dead transitions. [2022-11-20 10:54:39,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1201 transitions, 12227 flow [2022-11-20 10:54:39,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 10:54:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-20 10:54:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 3975 transitions. [2022-11-20 10:54:39,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2022-11-20 10:54:39,849 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 3975 transitions. [2022-11-20 10:54:39,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 3975 transitions. [2022-11-20 10:54:39,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:39,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 3975 transitions. [2022-11-20 10:54:39,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 75.0) internal successors, (3975), 53 states have internal predecessors, (3975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 189.0) internal successors, (10206), 54 states have internal predecessors, (10206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,877 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 189.0) internal successors, (10206), 54 states have internal predecessors, (10206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,877 INFO L175 Difference]: Start difference. First operand has 304 places, 331 transitions, 1897 flow. Second operand 53 states and 3975 transitions. [2022-11-20 10:54:39,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1201 transitions, 12227 flow [2022-11-20 10:54:40,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 1201 transitions, 11690 flow, removed 253 selfloop flow, removed 15 redundant places. [2022-11-20 10:54:40,589 INFO L231 Difference]: Finished difference. Result has 360 places, 591 transitions, 5472 flow [2022-11-20 10:54:40,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=5472, PETRI_PLACES=360, PETRI_TRANSITIONS=591} [2022-11-20 10:54:40,590 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 190 predicate places. [2022-11-20 10:54:40,591 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 591 transitions, 5472 flow [2022-11-20 10:54:40,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 70.01818181818182) internal successors, (3851), 55 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:40,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:40,593 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:40,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:40,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:40,799 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:54:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1829695854, now seen corresponding path program 3 times [2022-11-20 10:54:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:40,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979128304] [2022-11-20 10:54:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:40,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:42,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:42,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979128304] [2022-11-20 10:54:42,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979128304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:42,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625413332] [2022-11-20 10:54:42,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:54:42,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:42,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:42,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:42,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:54:43,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:54:43,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:43,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 10:54:43,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:45,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:54:45,486 INFO L321 Elim1Store]: treesize reduction 39, result has 7.1 percent of original size [2022-11-20 10:54:45,487 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 42 treesize of output 13 [2022-11-20 10:54:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:45,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:46,275 INFO L321 Elim1Store]: treesize reduction 15, result has 83.9 percent of original size [2022-11-20 10:54:46,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 103 [2022-11-20 10:54:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:48,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625413332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:48,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:48,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 18] total 54 [2022-11-20 10:54:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994693137] [2022-11-20 10:54:48,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:48,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-20 10:54:48,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:48,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-20 10:54:48,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=2256, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 10:54:48,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 189 [2022-11-20 10:54:48,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 591 transitions, 5472 flow. Second operand has 54 states, 54 states have (on average 72.07407407407408) internal successors, (3892), 54 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:48,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:48,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 189 [2022-11-20 10:54:48,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:08,526 INFO L130 PetriNetUnfolder]: 20524/39580 cut-off events. [2022-11-20 10:55:08,527 INFO L131 PetriNetUnfolder]: For 798149/801121 co-relation queries the response was YES. [2022-11-20 10:55:08,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298649 conditions, 39580 events. 20524/39580 cut-off events. For 798149/801121 co-relation queries the response was YES. Maximal size of possible extension queue 2229. Compared 398148 event pairs, 3570 based on Foata normal form. 101/39502 useless extension candidates. Maximal degree in co-relation 298562. Up to 12185 conditions per place. [2022-11-20 10:55:09,173 INFO L137 encePairwiseOnDemand]: 141/189 looper letters, 1113 selfloop transitions, 740 changer transitions 218/2128 dead transitions. [2022-11-20 10:55:09,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 2128 transitions, 28485 flow [2022-11-20 10:55:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-20 10:55:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-11-20 10:55:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 5533 transitions. [2022-11-20 10:55:09,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40659905937683716 [2022-11-20 10:55:09,188 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 5533 transitions. [2022-11-20 10:55:09,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 5533 transitions. [2022-11-20 10:55:09,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:09,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 5533 transitions. [2022-11-20 10:55:09,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 76.84722222222223) internal successors, (5533), 72 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 189.0) internal successors, (13797), 73 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,231 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 189.0) internal successors, (13797), 73 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,231 INFO L175 Difference]: Start difference. First operand has 360 places, 591 transitions, 5472 flow. Second operand 72 states and 5533 transitions. [2022-11-20 10:55:09,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 2128 transitions, 28485 flow [2022-11-20 10:55:13,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 2128 transitions, 26900 flow, removed 770 selfloop flow, removed 23 redundant places. [2022-11-20 10:55:13,160 INFO L231 Difference]: Finished difference. Result has 448 places, 1260 transitions, 15769 flow [2022-11-20 10:55:13,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=4858, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=15769, PETRI_PLACES=448, PETRI_TRANSITIONS=1260} [2022-11-20 10:55:13,161 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 278 predicate places. [2022-11-20 10:55:13,162 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 1260 transitions, 15769 flow [2022-11-20 10:55:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 72.07407407407408) internal successors, (3892), 54 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:13,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:13,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:13,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:13,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:13,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 10:55:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1737388614, now seen corresponding path program 4 times [2022-11-20 10:55:13,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:13,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131182037] [2022-11-20 10:55:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:13,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:55:15,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:15,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131182037] [2022-11-20 10:55:15,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131182037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:15,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752257099] [2022-11-20 10:55:15,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:55:15,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:15,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:15,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:15,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed13a192-44ad-4746-9b8c-37f30895a776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:55:15,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:55:15,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:55:15,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:55:15,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:21,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:55:21,037 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 10:55:21,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2022-11-20 10:55:21,048 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 27 treesize of output 15 [2022-11-20 10:55:21,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-20 10:55:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:55:21,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:21,716 WARN L837 $PredicateComparison]: unable to prove that (and (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_228 (Array Int Int))) (< c_~v_old~0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_228) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)) 1)))) is different from false [2022-11-20 10:55:22,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:55:22,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 139 [2022-11-20 10:55:22,089 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 42 treesize of output 36 [2022-11-20 10:55:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:55:23,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752257099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:23,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:23,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 20] total 59 [2022-11-20 10:55:23,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249959337] [2022-11-20 10:55:23,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:23,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-20 10:55:23,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-20 10:55:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3005, Unknown=2, NotChecked=112, Total=3422 [2022-11-20 10:55:23,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 189 [2022-11-20 10:55:23,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 1260 transitions, 15769 flow. Second operand has 59 states, 59 states have (on average 60.898305084745765) internal successors, (3593), 59 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:23,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:23,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 189 [2022-11-20 10:55:23,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:26,414 INFO L130 PetriNetUnfolder]: 30369/57858 cut-off events. [2022-11-20 10:56:26,415 INFO L131 PetriNetUnfolder]: For 1910380/1914632 co-relation queries the response was YES. [2022-11-20 10:56:27,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540414 conditions, 57858 events. 30369/57858 cut-off events. For 1910380/1914632 co-relation queries the response was YES. Maximal size of possible extension queue 3139. Compared 609594 event pairs, 6168 based on Foata normal form. 222/57883 useless extension candidates. Maximal degree in co-relation 540286. Up to 17505 conditions per place. [2022-11-20 10:56:27,588 INFO L137 encePairwiseOnDemand]: 146/189 looper letters, 1339 selfloop transitions, 1526 changer transitions 143/3057 dead transitions. [2022-11-20 10:56:27,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 3057 transitions, 49760 flow [2022-11-20 10:56:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-20 10:56:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-11-20 10:56:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5315 transitions. [2022-11-20 10:56:27,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.33478206097253715 [2022-11-20 10:56:27,598 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5315 transitions. [2022-11-20 10:56:27,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5315 transitions. [2022-11-20 10:56:27,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:27,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5315 transitions. [2022-11-20 10:56:27,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 63.273809523809526) internal successors, (5315), 84 states have internal predecessors, (5315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:27,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 189.0) internal successors, (16065), 85 states have internal predecessors, (16065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:27,630 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 189.0) internal successors, (16065), 85 states have internal predecessors, (16065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:27,631 INFO L175 Difference]: Start difference. First operand has 448 places, 1260 transitions, 15769 flow. Second operand 84 states and 5315 transitions. [2022-11-20 10:56:27,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 3057 transitions, 49760 flow