./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.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_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/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_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/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_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- 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 11:31:42,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:31:42,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:31:42,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:31:42,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:31:42,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:31:42,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:31:42,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:31:42,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:31:42,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:31:42,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:31:42,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:31:42,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:31:42,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:31:42,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:31:42,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:31:42,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:31:42,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:31:42,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:31:42,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:31:42,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:31:42,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:31:42,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:31:42,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:31:42,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:31:42,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:31:42,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:31:42,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:31:42,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:31:42,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:31:42,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:31:42,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:31:42,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:31:42,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:31:42,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:31:42,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:31:42,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:31:42,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:31:42,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:31:42,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:31:42,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:31:42,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:31:42,925 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:31:42,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:31:42,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:31:42,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:31:42,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:31:42,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:31:42,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:31:42,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:31:42,932 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:31:42,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:31:42,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:31:42,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:31:42,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:31:42,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:31:42,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:31:42,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:31:42,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:31:42,935 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:31:42,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:31:42,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:31:42,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:31:42,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:31:42,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:31:42,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:31:42,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:31:42,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:31:42,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:31:42,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:31:42,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:31:42,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:31:42,938 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:31:42,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:31:42,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:31:42,939 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_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2022-11-20 11:31:43,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:31:43,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:31:43,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:31:43,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:31:43,306 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:31:43,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-20 11:31:46,449 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:31:46,656 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:31:46,656 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-20 11:31:46,669 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/data/cfe21e0a6/61ed0f6c562e4db7b507683513bf4fde/FLAGbb2cd0344 [2022-11-20 11:31:46,691 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/data/cfe21e0a6/61ed0f6c562e4db7b507683513bf4fde [2022-11-20 11:31:46,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:31:46,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:31:46,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:31:46,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:31:46,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:31:46,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:31:46" (1/1) ... [2022-11-20 11:31:46,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bccccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:46, skipping insertion in model container [2022-11-20 11:31:46,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:31:46" (1/1) ... [2022-11-20 11:31:46,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:31:46,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:31:46,970 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_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-20 11:31:46,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:31:47,006 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:31:47,045 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_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-20 11:31:47,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:31:47,075 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:31:47,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47 WrapperNode [2022-11-20 11:31:47,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:31:47,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:31:47,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:31:47,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:31:47,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,157 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 232 [2022-11-20 11:31:47,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:31:47,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:31:47,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:31:47,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:31:47,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,220 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:31:47,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:31:47,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:31:47,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:31:47,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (1/1) ... [2022-11-20 11:31:47,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:31:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:31:47,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:31:47,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:31:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:31:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:31:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:31:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:31:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:31:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:31:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:31:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:31:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:31:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:31:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:31:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:31:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:31:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:31:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:31:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:31:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:31:47,333 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 11:31:47,539 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:31:47,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:31:48,056 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:31:48,207 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:31:48,207 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 11:31:48,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:31:48 BoogieIcfgContainer [2022-11-20 11:31:48,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:31:48,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:31:48,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:31:48,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:31:48,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:31:46" (1/3) ... [2022-11-20 11:31:48,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1f530d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:31:48, skipping insertion in model container [2022-11-20 11:31:48,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:47" (2/3) ... [2022-11-20 11:31:48,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1f530d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:31:48, skipping insertion in model container [2022-11-20 11:31:48,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:31:48" (3/3) ... [2022-11-20 11:31:48,220 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-11-20 11:31:48,229 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:31:48,239 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:31:48,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:31:48,240 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:31:48,417 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:31:48,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 315 transitions, 654 flow [2022-11-20 11:31:48,685 INFO L130 PetriNetUnfolder]: 27/312 cut-off events. [2022-11-20 11:31:48,686 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:31:48,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 312 events. 27/312 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 244. Up to 3 conditions per place. [2022-11-20 11:31:48,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 315 transitions, 654 flow [2022-11-20 11:31:48,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 301 transitions, 620 flow [2022-11-20 11:31:48,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:31:48,743 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;@3334562c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:31:48,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 11:31:48,839 INFO L130 PetriNetUnfolder]: 27/300 cut-off events. [2022-11-20 11:31:48,839 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:31:48,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:48,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:48,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:31:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1235061613, now seen corresponding path program 1 times [2022-11-20 11:31:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:48,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758280673] [2022-11-20 11:31:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:48,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:49,303 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 11:31:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:49,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758280673] [2022-11-20 11:31:49,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758280673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:49,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:49,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:31:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686577399] [2022-11-20 11:31:49,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:49,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:31:49,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:31:49,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:31:49,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 315 [2022-11-20 11:31:49,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 301 transitions, 620 flow. Second operand has 2 states, 2 states have (on average 294.0) internal successors, (588), 2 states have internal predecessors, (588), 0 states have call successors, (0), 0 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 11:31:49,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:49,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 315 [2022-11-20 11:31:49,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:49,493 INFO L130 PetriNetUnfolder]: 22/329 cut-off events. [2022-11-20 11:31:49,494 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-20 11:31:49,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 329 events. 22/329 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 378 event pairs, 7 based on Foata normal form. 36/338 useless extension candidates. Maximal degree in co-relation 233. Up to 28 conditions per place. [2022-11-20 11:31:49,499 INFO L137 encePairwiseOnDemand]: 297/315 looper letters, 8 selfloop transitions, 0 changer transitions 12/283 dead transitions. [2022-11-20 11:31:49,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 283 transitions, 600 flow [2022-11-20 11:31:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:31:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:31:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 602 transitions. [2022-11-20 11:31:49,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2022-11-20 11:31:49,551 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 602 transitions. [2022-11-20 11:31:49,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 602 transitions. [2022-11-20 11:31:49,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:49,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 602 transitions. [2022-11-20 11:31:49,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 301.0) internal successors, (602), 2 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 11:31:49,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 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 11:31:49,576 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 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 11:31:49,578 INFO L175 Difference]: Start difference. First operand has 284 places, 301 transitions, 620 flow. Second operand 2 states and 602 transitions. [2022-11-20 11:31:49,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 283 transitions, 600 flow [2022-11-20 11:31:49,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 283 transitions, 588 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:31:49,593 INFO L231 Difference]: Finished difference. Result has 279 places, 271 transitions, 548 flow [2022-11-20 11:31:49,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=548, PETRI_PLACES=279, PETRI_TRANSITIONS=271} [2022-11-20 11:31:49,601 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, -5 predicate places. [2022-11-20 11:31:49,602 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 271 transitions, 548 flow [2022-11-20 11:31:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 294.0) internal successors, (588), 2 states have internal predecessors, (588), 0 states have call successors, (0), 0 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 11:31:49,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:49,603 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:49,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:31:49,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:31:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash 759378185, now seen corresponding path program 1 times [2022-11-20 11:31:49,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:49,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577042395] [2022-11-20 11:31:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:49,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:50,523 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 11:31:50,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:50,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577042395] [2022-11-20 11:31:50,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577042395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:50,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:50,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:31:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404094057] [2022-11-20 11:31:50,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:50,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:31:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:31:50,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:31:50,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 315 [2022-11-20 11:31:50,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 271 transitions, 548 flow. Second operand has 8 states, 8 states have (on average 199.625) internal successors, (1597), 8 states have internal predecessors, (1597), 0 states have call successors, (0), 0 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 11:31:50,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:50,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 315 [2022-11-20 11:31:50,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:50,963 INFO L130 PetriNetUnfolder]: 202/783 cut-off events. [2022-11-20 11:31:50,964 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-20 11:31:50,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 783 events. 202/783 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3244 event pairs, 103 based on Foata normal form. 0/638 useless extension candidates. Maximal degree in co-relation 1154. Up to 333 conditions per place. [2022-11-20 11:31:50,972 INFO L137 encePairwiseOnDemand]: 297/315 looper letters, 91 selfloop transitions, 15 changer transitions 0/283 dead transitions. [2022-11-20 11:31:50,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 283 transitions, 784 flow [2022-11-20 11:31:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:31:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:31:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1629 transitions. [2022-11-20 11:31:50,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6464285714285715 [2022-11-20 11:31:50,977 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1629 transitions. [2022-11-20 11:31:50,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1629 transitions. [2022-11-20 11:31:50,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:50,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1629 transitions. [2022-11-20 11:31:50,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 203.625) internal successors, (1629), 8 states have internal predecessors, (1629), 0 states have call successors, (0), 0 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 11:31:50,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 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 11:31:50,990 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 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 11:31:50,991 INFO L175 Difference]: Start difference. First operand has 279 places, 271 transitions, 548 flow. Second operand 8 states and 1629 transitions. [2022-11-20 11:31:50,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 283 transitions, 784 flow [2022-11-20 11:31:50,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 283 transitions, 784 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:31:51,000 INFO L231 Difference]: Finished difference. Result has 275 places, 274 transitions, 602 flow [2022-11-20 11:31:51,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=275, PETRI_TRANSITIONS=274} [2022-11-20 11:31:51,001 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, -9 predicate places. [2022-11-20 11:31:51,002 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 274 transitions, 602 flow [2022-11-20 11:31:51,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 199.625) internal successors, (1597), 8 states have internal predecessors, (1597), 0 states have call successors, (0), 0 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 11:31:51,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:51,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:51,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:31:51,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:31:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash 147123894, now seen corresponding path program 1 times [2022-11-20 11:31:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:51,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487295168] [2022-11-20 11:31:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:51,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:31:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:52,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487295168] [2022-11-20 11:31:52,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487295168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:52,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:52,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:31:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217555036] [2022-11-20 11:31:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:52,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:31:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:31:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:31:52,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 315 [2022-11-20 11:31:52,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 274 transitions, 602 flow. Second operand has 21 states, 21 states have (on average 174.85714285714286) internal successors, (3672), 21 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:52,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:52,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 315 [2022-11-20 11:31:52,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:54,649 INFO L130 PetriNetUnfolder]: 765/2564 cut-off events. [2022-11-20 11:31:54,650 INFO L131 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2022-11-20 11:31:54,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 2564 events. 765/2564 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 18246 event pairs, 101 based on Foata normal form. 2/2208 useless extension candidates. Maximal degree in co-relation 3686. Up to 282 conditions per place. [2022-11-20 11:31:54,674 INFO L137 encePairwiseOnDemand]: 285/315 looper letters, 146 selfloop transitions, 31 changer transitions 20/357 dead transitions. [2022-11-20 11:31:54,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 357 transitions, 1173 flow [2022-11-20 11:31:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:31:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:31:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5638 transitions. [2022-11-20 11:31:54,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593253968253968 [2022-11-20 11:31:54,689 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5638 transitions. [2022-11-20 11:31:54,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5638 transitions. [2022-11-20 11:31:54,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:54,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5638 transitions. [2022-11-20 11:31:54,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 176.1875) internal successors, (5638), 32 states have internal predecessors, (5638), 0 states have call successors, (0), 0 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 11:31:54,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 315.0) internal successors, (10395), 33 states have internal predecessors, (10395), 0 states have call successors, (0), 0 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 11:31:54,730 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 315.0) internal successors, (10395), 33 states have internal predecessors, (10395), 0 states have call successors, (0), 0 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 11:31:54,730 INFO L175 Difference]: Start difference. First operand has 275 places, 274 transitions, 602 flow. Second operand 32 states and 5638 transitions. [2022-11-20 11:31:54,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 357 transitions, 1173 flow [2022-11-20 11:31:54,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 357 transitions, 1149 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:31:54,740 INFO L231 Difference]: Finished difference. Result has 307 places, 285 transitions, 703 flow [2022-11-20 11:31:54,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=703, PETRI_PLACES=307, PETRI_TRANSITIONS=285} [2022-11-20 11:31:54,743 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, 23 predicate places. [2022-11-20 11:31:54,744 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 285 transitions, 703 flow [2022-11-20 11:31:54,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 174.85714285714286) internal successors, (3672), 21 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:54,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:54,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:54,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:31:54,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:31:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1874260241, now seen corresponding path program 1 times [2022-11-20 11:31:54,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:54,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423877320] [2022-11-20 11:31:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:54,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:31:55,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:55,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423877320] [2022-11-20 11:31:55,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423877320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:31:55,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839760528] [2022-11-20 11:31:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:55,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:31:55,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:31:55,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:31:55,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:31:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:55,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:31:55,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:31:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:31:55,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:31:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:31:56,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839760528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:31:56,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:31:56,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-20 11:31:56,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72733427] [2022-11-20 11:31:56,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:31:56,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:31:56,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:31:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:31:56,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 315 [2022-11-20 11:31:56,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 285 transitions, 703 flow. Second operand has 19 states, 19 states have (on average 240.26315789473685) internal successors, (4565), 19 states have internal predecessors, (4565), 0 states have call successors, (0), 0 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 11:31:56,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:56,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 315 [2022-11-20 11:31:56,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:57,926 INFO L130 PetriNetUnfolder]: 1489/3795 cut-off events. [2022-11-20 11:31:57,927 INFO L131 PetriNetUnfolder]: For 445/539 co-relation queries the response was YES. [2022-11-20 11:31:57,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6396 conditions, 3795 events. 1489/3795 cut-off events. For 445/539 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 24382 event pairs, 585 based on Foata normal form. 6/2908 useless extension candidates. Maximal degree in co-relation 6384. Up to 1092 conditions per place. [2022-11-20 11:31:57,960 INFO L137 encePairwiseOnDemand]: 286/315 looper letters, 133 selfloop transitions, 54 changer transitions 0/407 dead transitions. [2022-11-20 11:31:57,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 407 transitions, 1375 flow [2022-11-20 11:31:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:31:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:31:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4907 transitions. [2022-11-20 11:31:57,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7788888888888889 [2022-11-20 11:31:57,977 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4907 transitions. [2022-11-20 11:31:57,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4907 transitions. [2022-11-20 11:31:57,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:57,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4907 transitions. [2022-11-20 11:31:57,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 245.35) internal successors, (4907), 20 states have internal predecessors, (4907), 0 states have call successors, (0), 0 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 11:31:58,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 0 states have call successors, (0), 0 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 11:31:58,006 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 0 states have call successors, (0), 0 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 11:31:58,006 INFO L175 Difference]: Start difference. First operand has 307 places, 285 transitions, 703 flow. Second operand 20 states and 4907 transitions. [2022-11-20 11:31:58,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 407 transitions, 1375 flow [2022-11-20 11:31:58,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 407 transitions, 1331 flow, removed 5 selfloop flow, removed 21 redundant places. [2022-11-20 11:31:58,022 INFO L231 Difference]: Finished difference. Result has 307 places, 322 transitions, 974 flow [2022-11-20 11:31:58,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=974, PETRI_PLACES=307, PETRI_TRANSITIONS=322} [2022-11-20 11:31:58,025 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, 23 predicate places. [2022-11-20 11:31:58,025 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 322 transitions, 974 flow [2022-11-20 11:31:58,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 240.26315789473685) internal successors, (4565), 19 states have internal predecessors, (4565), 0 states have call successors, (0), 0 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 11:31:58,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:58,044 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:58,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:31:58,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:31:58,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:31:58,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash -894296104, now seen corresponding path program 1 times [2022-11-20 11:31:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:58,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855359112] [2022-11-20 11:31:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:58,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:31:58,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855359112] [2022-11-20 11:31:58,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855359112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:31:58,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556820755] [2022-11-20 11:31:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:58,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:31:58,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:31:58,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:31:58,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:31:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:58,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:31:58,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:31:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:31:59,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:31:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:31:59,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556820755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:31:59,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:31:59,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-20 11:31:59,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986045982] [2022-11-20 11:31:59,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:31:59,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:31:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:59,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:31:59,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:31:59,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 315 [2022-11-20 11:31:59,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 322 transitions, 974 flow. Second operand has 19 states, 19 states have (on average 237.52631578947367) internal successors, (4513), 19 states have internal predecessors, (4513), 0 states have call successors, (0), 0 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 11:31:59,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:59,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 315 [2022-11-20 11:31:59,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:01,431 INFO L130 PetriNetUnfolder]: 1561/3928 cut-off events. [2022-11-20 11:32:01,431 INFO L131 PetriNetUnfolder]: For 1442/1563 co-relation queries the response was YES. [2022-11-20 11:32:01,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7701 conditions, 3928 events. 1561/3928 cut-off events. For 1442/1563 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 26015 event pairs, 773 based on Foata normal form. 35/3331 useless extension candidates. Maximal degree in co-relation 7683. Up to 1568 conditions per place. [2022-11-20 11:32:01,472 INFO L137 encePairwiseOnDemand]: 286/315 looper letters, 72 selfloop transitions, 30 changer transitions 89/408 dead transitions. [2022-11-20 11:32:01,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 408 transitions, 1642 flow [2022-11-20 11:32:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:32:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:32:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4847 transitions. [2022-11-20 11:32:01,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7693650793650794 [2022-11-20 11:32:01,486 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4847 transitions. [2022-11-20 11:32:01,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4847 transitions. [2022-11-20 11:32:01,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:01,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4847 transitions. [2022-11-20 11:32:01,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 242.35) internal successors, (4847), 20 states have internal predecessors, (4847), 0 states have call successors, (0), 0 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 11:32:01,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 0 states have call successors, (0), 0 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 11:32:01,517 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 0 states have call successors, (0), 0 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 11:32:01,518 INFO L175 Difference]: Start difference. First operand has 307 places, 322 transitions, 974 flow. Second operand 20 states and 4847 transitions. [2022-11-20 11:32:01,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 408 transitions, 1642 flow [2022-11-20 11:32:01,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 408 transitions, 1605 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-11-20 11:32:01,544 INFO L231 Difference]: Finished difference. Result has 327 places, 297 transitions, 872 flow [2022-11-20 11:32:01,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=872, PETRI_PLACES=327, PETRI_TRANSITIONS=297} [2022-11-20 11:32:01,547 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, 43 predicate places. [2022-11-20 11:32:01,547 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 297 transitions, 872 flow [2022-11-20 11:32:01,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 237.52631578947367) internal successors, (4513), 19 states have internal predecessors, (4513), 0 states have call successors, (0), 0 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 11:32:01,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:01,550 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:01,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:32:01,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:32:01,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:32:01,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:01,760 INFO L85 PathProgramCache]: Analyzing trace with hash 631866536, now seen corresponding path program 2 times [2022-11-20 11:32:01,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:01,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041212666] [2022-11-20 11:32:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:01,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:32:02,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:02,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041212666] [2022-11-20 11:32:02,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041212666] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:32:02,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872771338] [2022-11-20 11:32:02,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:32:02,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:32:02,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:32:02,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:32:02,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:32:02,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:32:02,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:32:02,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:32:02,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:32:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:32:02,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:32:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:32:03,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872771338] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:32:03,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:32:03,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-11-20 11:32:03,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994534382] [2022-11-20 11:32:03,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:03,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:32:03,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:03,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:32:03,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:32:03,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 315 [2022-11-20 11:32:03,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 297 transitions, 872 flow. Second operand has 9 states, 9 states have (on average 243.55555555555554) internal successors, (2192), 9 states have internal predecessors, (2192), 0 states have call successors, (0), 0 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 11:32:03,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:03,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 315 [2022-11-20 11:32:03,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:03,847 INFO L130 PetriNetUnfolder]: 826/1975 cut-off events. [2022-11-20 11:32:03,849 INFO L131 PetriNetUnfolder]: For 1591/1642 co-relation queries the response was YES. [2022-11-20 11:32:03,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 1975 events. 826/1975 cut-off events. For 1591/1642 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11547 event pairs, 220 based on Foata normal form. 2/1706 useless extension candidates. Maximal degree in co-relation 4604. Up to 701 conditions per place. [2022-11-20 11:32:03,872 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 78 selfloop transitions, 10 changer transitions 0/309 dead transitions. [2022-11-20 11:32:03,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 309 transitions, 1100 flow [2022-11-20 11:32:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:32:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:32:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2444 transitions. [2022-11-20 11:32:03,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7758730158730158 [2022-11-20 11:32:03,879 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2444 transitions. [2022-11-20 11:32:03,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2444 transitions. [2022-11-20 11:32:03,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:03,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2444 transitions. [2022-11-20 11:32:03,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 244.4) internal successors, (2444), 10 states have internal predecessors, (2444), 0 states have call successors, (0), 0 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 11:32:03,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 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 11:32:03,897 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 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 11:32:03,897 INFO L175 Difference]: Start difference. First operand has 327 places, 297 transitions, 872 flow. Second operand 10 states and 2444 transitions. [2022-11-20 11:32:03,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 309 transitions, 1100 flow [2022-11-20 11:32:03,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 309 transitions, 1019 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-11-20 11:32:03,909 INFO L231 Difference]: Finished difference. Result has 303 places, 299 transitions, 840 flow [2022-11-20 11:32:03,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=840, PETRI_PLACES=303, PETRI_TRANSITIONS=299} [2022-11-20 11:32:03,913 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, 19 predicate places. [2022-11-20 11:32:03,913 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 299 transitions, 840 flow [2022-11-20 11:32:03,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 243.55555555555554) internal successors, (2192), 9 states have internal predecessors, (2192), 0 states have call successors, (0), 0 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 11:32:03,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:03,916 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:03,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:32:04,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:32:04,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:32:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:04,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1786427132, now seen corresponding path program 1 times [2022-11-20 11:32:04,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:04,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145545767] [2022-11-20 11:32:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:04,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:32:04,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:04,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145545767] [2022-11-20 11:32:04,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145545767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:32:04,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836627210] [2022-11-20 11:32:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:04,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:32:04,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:32:04,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:32:04,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:32:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:04,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:32:04,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:32:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:32:05,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:32:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:32:05,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836627210] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:32:05,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:32:05,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-11-20 11:32:05,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230297089] [2022-11-20 11:32:05,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:05,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:32:05,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:32:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:32:05,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 315 [2022-11-20 11:32:05,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 299 transitions, 840 flow. Second operand has 9 states, 9 states have (on average 239.77777777777777) internal successors, (2158), 9 states have internal predecessors, (2158), 0 states have call successors, (0), 0 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 11:32:05,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:05,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 315 [2022-11-20 11:32:05,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:06,589 INFO L130 PetriNetUnfolder]: 1352/3191 cut-off events. [2022-11-20 11:32:06,590 INFO L131 PetriNetUnfolder]: For 1676/2026 co-relation queries the response was YES. [2022-11-20 11:32:06,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 3191 events. 1352/3191 cut-off events. For 1676/2026 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21730 event pairs, 315 based on Foata normal form. 379/3354 useless extension candidates. Maximal degree in co-relation 6959. Up to 1235 conditions per place. [2022-11-20 11:32:06,627 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 85 selfloop transitions, 10 changer transitions 0/312 dead transitions. [2022-11-20 11:32:06,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 1080 flow [2022-11-20 11:32:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:32:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:32:06,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2409 transitions. [2022-11-20 11:32:06,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2022-11-20 11:32:06,638 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2409 transitions. [2022-11-20 11:32:06,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2409 transitions. [2022-11-20 11:32:06,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:06,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2409 transitions. [2022-11-20 11:32:06,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 240.9) internal successors, (2409), 10 states have internal predecessors, (2409), 0 states have call successors, (0), 0 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 11:32:06,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 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 11:32:06,665 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 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 11:32:06,665 INFO L175 Difference]: Start difference. First operand has 303 places, 299 transitions, 840 flow. Second operand 10 states and 2409 transitions. [2022-11-20 11:32:06,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 1080 flow [2022-11-20 11:32:06,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 312 transitions, 1069 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 11:32:06,680 INFO L231 Difference]: Finished difference. Result has 310 places, 300 transitions, 863 flow [2022-11-20 11:32:06,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=863, PETRI_PLACES=310, PETRI_TRANSITIONS=300} [2022-11-20 11:32:06,681 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, 26 predicate places. [2022-11-20 11:32:06,682 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 863 flow [2022-11-20 11:32:06,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 239.77777777777777) internal successors, (2158), 9 states have internal predecessors, (2158), 0 states have call successors, (0), 0 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 11:32:06,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:06,683 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:06,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:32:06,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:32:06,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:32:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:06,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1542236568, now seen corresponding path program 1 times [2022-11-20 11:32:06,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:06,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713007773] [2022-11-20 11:32:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:32:07,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:07,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713007773] [2022-11-20 11:32:07,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713007773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:32:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637809571] [2022-11-20 11:32:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:07,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:32:07,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:32:07,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:32:07,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:32:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:07,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:32:07,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:32:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:32:07,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:32:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:32:08,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637809571] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:32:08,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:32:08,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-11-20 11:32:08,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53277058] [2022-11-20 11:32:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:08,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:32:08,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:32:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:32:08,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 315 [2022-11-20 11:32:08,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 863 flow. Second operand has 9 states, 9 states have (on average 242.66666666666666) internal successors, (2184), 9 states have internal predecessors, (2184), 0 states have call successors, (0), 0 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 11:32:08,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:08,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 315 [2022-11-20 11:32:08,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:08,892 INFO L130 PetriNetUnfolder]: 778/1843 cut-off events. [2022-11-20 11:32:08,892 INFO L131 PetriNetUnfolder]: For 1532/1946 co-relation queries the response was YES. [2022-11-20 11:32:08,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 1843 events. 778/1843 cut-off events. For 1532/1946 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10206 event pairs, 159 based on Foata normal form. 439/2097 useless extension candidates. Maximal degree in co-relation 4115. Up to 756 conditions per place. [2022-11-20 11:32:08,913 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 81 selfloop transitions, 10 changer transitions 0/309 dead transitions. [2022-11-20 11:32:08,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 309 transitions, 1077 flow [2022-11-20 11:32:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:32:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:32:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2435 transitions. [2022-11-20 11:32:08,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.773015873015873 [2022-11-20 11:32:08,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2435 transitions. [2022-11-20 11:32:08,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2435 transitions. [2022-11-20 11:32:08,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:08,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2435 transitions. [2022-11-20 11:32:08,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 243.5) internal successors, (2435), 10 states have internal predecessors, (2435), 0 states have call successors, (0), 0 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 11:32:08,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 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 11:32:08,936 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 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 11:32:08,936 INFO L175 Difference]: Start difference. First operand has 310 places, 300 transitions, 863 flow. Second operand 10 states and 2435 transitions. [2022-11-20 11:32:08,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 309 transitions, 1077 flow [2022-11-20 11:32:08,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 309 transitions, 1060 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 11:32:08,947 INFO L231 Difference]: Finished difference. Result has 312 places, 299 transitions, 871 flow [2022-11-20 11:32:08,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=871, PETRI_PLACES=312, PETRI_TRANSITIONS=299} [2022-11-20 11:32:08,951 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, 28 predicate places. [2022-11-20 11:32:08,951 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 299 transitions, 871 flow [2022-11-20 11:32:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 242.66666666666666) internal successors, (2184), 9 states have internal predecessors, (2184), 0 states have call successors, (0), 0 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 11:32:08,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:08,953 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:08,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:32:09,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:32:09,160 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:32:09,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash 966999279, now seen corresponding path program 1 times [2022-11-20 11:32:09,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:09,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903155390] [2022-11-20 11:32:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:09,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:32:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:16,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903155390] [2022-11-20 11:32:16,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903155390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:32:16,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818471896] [2022-11-20 11:32:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:16,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:32:16,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:32:16,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:32:16,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:32:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:16,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-20 11:32:16,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:32:17,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:32:17,195 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 29 treesize of output 25 [2022-11-20 11:32:19,387 INFO L321 Elim1Store]: treesize reduction 34, result has 57.0 percent of original size [2022-11-20 11:32:19,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 49 treesize of output 69 [2022-11-20 11:32:22,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:32:22,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 195 treesize of output 223 [2022-11-20 11:32:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:32:22,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:32:24,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:32:24,016 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 73 treesize of output 87 [2022-11-20 11:32:24,041 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 28 treesize of output 24 [2022-11-20 11:32:24,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:32:24,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2022-11-20 11:32:24,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:32:24,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 78 treesize of output 126 [2022-11-20 11:32:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:32:25,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818471896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:32:25,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:32:25,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 39, 29] total 94 [2022-11-20 11:32:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18045896] [2022-11-20 11:32:25,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:32:25,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-20 11:32:25,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-20 11:32:25,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=8259, Unknown=0, NotChecked=0, Total=8742 [2022-11-20 11:32:25,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 315 [2022-11-20 11:32:25,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 299 transitions, 871 flow. Second operand has 94 states, 94 states have (on average 110.30851063829788) internal successors, (10369), 94 states have internal predecessors, (10369), 0 states have call successors, (0), 0 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 11:32:25,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:25,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 315 [2022-11-20 11:32:25,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:53,377 INFO L130 PetriNetUnfolder]: 36389/57383 cut-off events. [2022-11-20 11:32:53,377 INFO L131 PetriNetUnfolder]: For 42201/42201 co-relation queries the response was YES. [2022-11-20 11:32:53,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142693 conditions, 57383 events. 36389/57383 cut-off events. For 42201/42201 co-relation queries the response was YES. Maximal size of possible extension queue 1575. Compared 452222 event pairs, 3860 based on Foata normal form. 2/53462 useless extension candidates. Maximal degree in co-relation 142673. Up to 8901 conditions per place. [2022-11-20 11:32:53,883 INFO L137 encePairwiseOnDemand]: 228/315 looper letters, 742 selfloop transitions, 250 changer transitions 40/1125 dead transitions. [2022-11-20 11:32:53,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1125 transitions, 5526 flow [2022-11-20 11:32:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-20 11:32:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2022-11-20 11:32:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 10223 transitions. [2022-11-20 11:32:53,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3730341178617041 [2022-11-20 11:32:53,911 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 10223 transitions. [2022-11-20 11:32:53,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 10223 transitions. [2022-11-20 11:32:53,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:53,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 10223 transitions. [2022-11-20 11:32:53,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 117.50574712643679) internal successors, (10223), 87 states have internal predecessors, (10223), 0 states have call successors, (0), 0 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 11:32:53,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 315.0) internal successors, (27720), 88 states have internal predecessors, (27720), 0 states have call successors, (0), 0 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 11:32:53,987 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 315.0) internal successors, (27720), 88 states have internal predecessors, (27720), 0 states have call successors, (0), 0 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 11:32:53,987 INFO L175 Difference]: Start difference. First operand has 312 places, 299 transitions, 871 flow. Second operand 87 states and 10223 transitions. [2022-11-20 11:32:53,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1125 transitions, 5526 flow [2022-11-20 11:32:54,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1125 transitions, 5484 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 11:32:54,888 INFO L231 Difference]: Finished difference. Result has 424 places, 501 transitions, 2604 flow [2022-11-20 11:32:54,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=2604, PETRI_PLACES=424, PETRI_TRANSITIONS=501} [2022-11-20 11:32:54,889 INFO L288 CegarLoopForPetriNet]: 284 programPoint places, 140 predicate places. [2022-11-20 11:32:54,890 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 501 transitions, 2604 flow [2022-11-20 11:32:54,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 110.30851063829788) internal successors, (10369), 94 states have internal predecessors, (10369), 0 states have call successors, (0), 0 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 11:32:54,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:54,894 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:54,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:32:55,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:32:55,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:32:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash -229338995, now seen corresponding path program 2 times [2022-11-20 11:32:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:55,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207518000] [2022-11-20 11:32:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:55,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:33:03,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:03,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207518000] [2022-11-20 11:33:03,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207518000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:33:03,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776896124] [2022-11-20 11:33:03,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:33:03,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:33:03,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:33:03,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:33:03,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58f54ed8-92fe-40e9-9964-971fb9fbe9ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:33:03,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:33:03,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:33:03,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-20 11:33:03,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:04,632 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 11:33:05,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:33:06,450 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:33:06,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:33:06,848 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 11:33:07,037 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 11:33:10,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:33:10,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:33:10,497 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:33:10,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-20 11:33:10,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:33:10,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:33:10,817 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:33:10,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-20 11:33:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:33:11,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:33:11,680 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:33:11,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2022-11-20 11:33:12,387 INFO L321 Elim1Store]: treesize reduction 72, result has 62.7 percent of original size [2022-11-20 11:33:12,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 154 [2022-11-20 11:34:20,907 WARN L233 SmtUtils]: Spent 39.35s on a formula simplification. DAG size of input: 346 DAG size of output: 180 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:34:39,815 WARN L233 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 176 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:35:01,125 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:40:06,824 WARN L233 SmtUtils]: Spent 4.69m on a formula simplification that was a NOOP. DAG size: 3937 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 11:40:06,826 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:40:06,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 0 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 990 case distinctions, treesize of input 1528 treesize of output 13306