./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:19:12,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:19:12,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:19:12,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:19:12,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:19:12,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:19:12,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:19:12,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:19:12,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:19:12,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:19:12,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:19:12,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:19:12,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:19:12,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:19:12,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:19:12,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:19:12,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:19:12,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:19:12,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:19:12,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:19:12,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:19:12,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:19:12,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:19:12,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:19:12,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:19:12,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:19:12,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:19:12,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:19:12,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:19:12,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:19:12,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:19:12,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:19:12,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:19:12,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:19:12,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:19:12,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:19:12,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:19:12,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:19:12,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:19:12,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:19:12,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:19:12,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:19:12,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:19:12,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:19:12,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:19:12,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:19:12,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:19:12,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:19:12,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:19:12,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:19:12,130 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:19:12,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:19:12,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:19:12,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:19:12,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:19:12,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:19:12,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:19:12,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:19:12,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:19:12,137 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:19:12,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:19:12,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:19:12,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:19:12,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:19:12,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:19:12,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:19:12,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:19:12,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:19:12,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:19:12,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:19:12,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:19:12,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:19:12,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:19:12,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:19:12,139 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:19:12,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:19:12,140 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:19:12,140 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da [2022-12-13 16:19:12,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:19:12,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:19:12,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:19:12,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:19:12,366 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:19:12,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-12-13 16:19:14,970 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:19:15,147 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:19:15,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-12-13 16:19:15,154 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/data/c5b761cac/5bc7d21a73974890bfd1fda61d1506a6/FLAG1ee33c4df [2022-12-13 16:19:15,532 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/data/c5b761cac/5bc7d21a73974890bfd1fda61d1506a6 [2022-12-13 16:19:15,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:19:15,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:19:15,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:19:15,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:19:15,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:19:15,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3963fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15, skipping insertion in model container [2022-12-13 16:19:15,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:19:15,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:19:15,683 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_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-12-13 16:19:15,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:19:15,700 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:19:15,715 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_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-12-13 16:19:15,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:19:15,729 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:19:15,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15 WrapperNode [2022-12-13 16:19:15,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:19:15,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:19:15,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:19:15,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:19:15,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,766 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 198 [2022-12-13 16:19:15,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:19:15,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:19:15,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:19:15,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:19:15,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:19:15,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:19:15,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:19:15,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:19:15,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (1/1) ... [2022-12-13 16:19:15,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:19:15,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:15,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:19:15,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:19:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:19:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:19:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:19:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:19:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:19:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:19:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:19:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:19:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:19:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:19:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:19:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:19:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:19:15,866 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:19:15,958 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:19:15,959 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:19:16,218 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:19:16,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:19:16,232 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 16:19:16,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:19:16 BoogieIcfgContainer [2022-12-13 16:19:16,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:19:16,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:19:16,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:19:16,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:19:16,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:19:15" (1/3) ... [2022-12-13 16:19:16,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cdd05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:19:16, skipping insertion in model container [2022-12-13 16:19:16,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:19:15" (2/3) ... [2022-12-13 16:19:16,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cdd05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:19:16, skipping insertion in model container [2022-12-13 16:19:16,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:19:16" (3/3) ... [2022-12-13 16:19:16,244 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2022-12-13 16:19:16,252 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:19:16,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:19:16,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:19:16,261 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:19:16,353 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 16:19:16,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 258 transitions, 532 flow [2022-12-13 16:19:16,479 INFO L130 PetriNetUnfolder]: 21/256 cut-off events. [2022-12-13 16:19:16,479 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:19:16,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 21/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 346 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2022-12-13 16:19:16,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 258 transitions, 532 flow [2022-12-13 16:19:16,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 247 transitions, 506 flow [2022-12-13 16:19:16,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:19:16,505 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 247 transitions, 506 flow [2022-12-13 16:19:16,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 247 transitions, 506 flow [2022-12-13 16:19:16,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 247 transitions, 506 flow [2022-12-13 16:19:16,541 INFO L130 PetriNetUnfolder]: 21/247 cut-off events. [2022-12-13 16:19:16,541 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:19:16,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 247 events. 21/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 345 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2022-12-13 16:19:16,544 INFO L119 LiptonReduction]: Number of co-enabled transitions 6500 [2022-12-13 16:19:21,947 INFO L134 LiptonReduction]: Checked pairs total: 6493 [2022-12-13 16:19:21,947 INFO L136 LiptonReduction]: Total number of compositions: 281 [2022-12-13 16:19:21,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:19:21,961 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;@13556a3c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:19:21,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 16:19:21,965 INFO L130 PetriNetUnfolder]: 5/22 cut-off events. [2022-12-13 16:19:21,965 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:19:21,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:21,966 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:21,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1367488898, now seen corresponding path program 1 times [2022-12-13 16:19:21,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:21,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664107065] [2022-12-13 16:19:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:21,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:22,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664107065] [2022-12-13 16:19:22,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664107065] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:19:22,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:19:22,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:19:22,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52931229] [2022-12-13 16:19:22,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:22,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:19:22,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:22,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:19:22,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:19:22,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 539 [2022-12-13 16:19:22,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 222.14285714285714) internal successors, (1555), 7 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:22,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:22,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 539 [2022-12-13 16:19:22,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:23,004 INFO L130 PetriNetUnfolder]: 177/320 cut-off events. [2022-12-13 16:19:23,004 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-12-13 16:19:23,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 320 events. 177/320 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1170 event pairs, 20 based on Foata normal form. 1/263 useless extension candidates. Maximal degree in co-relation 320. Up to 134 conditions per place. [2022-12-13 16:19:23,007 INFO L137 encePairwiseOnDemand]: 531/539 looper letters, 60 selfloop transitions, 10 changer transitions 4/74 dead transitions. [2022-12-13 16:19:23,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 74 transitions, 335 flow [2022-12-13 16:19:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:19:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:19:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1837 transitions. [2022-12-13 16:19:23,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4260204081632653 [2022-12-13 16:19:23,025 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1837 transitions. [2022-12-13 16:19:23,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1837 transitions. [2022-12-13 16:19:23,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:23,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1837 transitions. [2022-12-13 16:19:23,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 229.625) internal successors, (1837), 8 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:23,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 539.0) internal successors, (4851), 9 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:23,053 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 539.0) internal successors, (4851), 9 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:23,055 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 58 flow. Second operand 8 states and 1837 transitions. [2022-12-13 16:19:23,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 74 transitions, 335 flow [2022-12-13 16:19:23,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 74 transitions, 309 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 16:19:23,060 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 113 flow [2022-12-13 16:19:23,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=113, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2022-12-13 16:19:23,065 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2022-12-13 16:19:23,066 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 113 flow [2022-12-13 16:19:23,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 222.14285714285714) internal successors, (1555), 7 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:23,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:23,067 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:23,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:19:23,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1629233330, now seen corresponding path program 2 times [2022-12-13 16:19:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:23,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074069282] [2022-12-13 16:19:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:23,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:23,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:23,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074069282] [2022-12-13 16:19:23,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074069282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:19:23,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:19:23,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:19:23,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315666818] [2022-12-13 16:19:23,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:23,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:19:23,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:23,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:19:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:19:23,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 539 [2022-12-13 16:19:23,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 113 flow. Second operand has 8 states, 8 states have (on average 219.875) internal successors, (1759), 8 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:23,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:23,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 539 [2022-12-13 16:19:23,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:23,972 INFO L130 PetriNetUnfolder]: 275/516 cut-off events. [2022-12-13 16:19:23,972 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2022-12-13 16:19:23,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 516 events. 275/516 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2303 event pairs, 54 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 849. Up to 304 conditions per place. [2022-12-13 16:19:23,975 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 55 selfloop transitions, 16 changer transitions 8/79 dead transitions. [2022-12-13 16:19:23,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 401 flow [2022-12-13 16:19:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:19:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:19:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2036 transitions. [2022-12-13 16:19:23,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.419707276850134 [2022-12-13 16:19:23,981 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2036 transitions. [2022-12-13 16:19:23,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2036 transitions. [2022-12-13 16:19:23,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:23,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2036 transitions. [2022-12-13 16:19:23,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 226.22222222222223) internal successors, (2036), 9 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:23,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:23,998 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:23,999 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 113 flow. Second operand 9 states and 2036 transitions. [2022-12-13 16:19:23,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 401 flow [2022-12-13 16:19:24,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 79 transitions, 399 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 16:19:24,002 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 210 flow [2022-12-13 16:19:24,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2022-12-13 16:19:24,003 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 18 predicate places. [2022-12-13 16:19:24,004 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 210 flow [2022-12-13 16:19:24,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 219.875) internal successors, (1759), 8 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:24,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:24,005 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:24,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:19:24,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1848256912, now seen corresponding path program 1 times [2022-12-13 16:19:24,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:24,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973136745] [2022-12-13 16:19:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:24,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:24,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:24,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973136745] [2022-12-13 16:19:24,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973136745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:24,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207000846] [2022-12-13 16:19:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:24,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:24,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:24,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:24,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:19:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:24,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:19:24,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:24,534 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:24,535 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 164 treesize of output 145 [2022-12-13 16:19:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:24,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:24,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:24,699 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 191 treesize of output 171 [2022-12-13 16:19:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:24,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207000846] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:24,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:19:24,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2022-12-13 16:19:24,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647034240] [2022-12-13 16:19:24,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:24,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:19:24,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:19:24,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:19:25,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 539 [2022-12-13 16:19:25,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:25,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:25,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 539 [2022-12-13 16:19:25,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:25,345 INFO L130 PetriNetUnfolder]: 280/536 cut-off events. [2022-12-13 16:19:25,345 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES. [2022-12-13 16:19:25,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 536 events. 280/536 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2407 event pairs, 134 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 1178. Up to 196 conditions per place. [2022-12-13 16:19:25,349 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 72 selfloop transitions, 11 changer transitions 9/92 dead transitions. [2022-12-13 16:19:25,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 92 transitions, 539 flow [2022-12-13 16:19:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:19:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:19:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1779 transitions. [2022-12-13 16:19:25,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.412569573283859 [2022-12-13 16:19:25,353 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1779 transitions. [2022-12-13 16:19:25,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1779 transitions. [2022-12-13 16:19:25,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:25,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1779 transitions. [2022-12-13 16:19:25,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 222.375) internal successors, (1779), 8 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:25,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 539.0) internal successors, (4851), 9 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:25,361 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 539.0) internal successors, (4851), 9 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:25,361 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 210 flow. Second operand 8 states and 1779 transitions. [2022-12-13 16:19:25,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 92 transitions, 539 flow [2022-12-13 16:19:25,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 92 transitions, 532 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 16:19:25,364 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 266 flow [2022-12-13 16:19:25,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=266, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2022-12-13 16:19:25,365 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2022-12-13 16:19:25,365 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 266 flow [2022-12-13 16:19:25,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:25,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:25,366 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:25,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:19:25,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:25,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:25,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1506831594, now seen corresponding path program 1 times [2022-12-13 16:19:25,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:25,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628068874] [2022-12-13 16:19:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:25,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:25,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628068874] [2022-12-13 16:19:25,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628068874] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:25,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506477764] [2022-12-13 16:19:25,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:25,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:25,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:25,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:25,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:19:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:25,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:19:25,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:26,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:26,126 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 164 treesize of output 145 [2022-12-13 16:19:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:26,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:26,261 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:26,261 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 191 treesize of output 171 [2022-12-13 16:19:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:26,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506477764] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:26,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:19:26,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2022-12-13 16:19:26,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642424535] [2022-12-13 16:19:26,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:26,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:19:26,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:19:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:19:26,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 539 [2022-12-13 16:19:26,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 266 flow. Second operand has 9 states, 9 states have (on average 213.77777777777777) internal successors, (1924), 9 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:26,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:26,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 539 [2022-12-13 16:19:26,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:26,948 INFO L130 PetriNetUnfolder]: 396/751 cut-off events. [2022-12-13 16:19:26,948 INFO L131 PetriNetUnfolder]: For 832/832 co-relation queries the response was YES. [2022-12-13 16:19:26,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 751 events. 396/751 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3659 event pairs, 212 based on Foata normal form. 13/675 useless extension candidates. Maximal degree in co-relation 1798. Up to 391 conditions per place. [2022-12-13 16:19:26,953 INFO L137 encePairwiseOnDemand]: 529/539 looper letters, 85 selfloop transitions, 13 changer transitions 5/103 dead transitions. [2022-12-13 16:19:26,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 103 transitions, 662 flow [2022-12-13 16:19:26,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:19:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:19:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1783 transitions. [2022-12-13 16:19:26,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4134972170686456 [2022-12-13 16:19:26,958 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1783 transitions. [2022-12-13 16:19:26,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1783 transitions. [2022-12-13 16:19:26,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:26,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1783 transitions. [2022-12-13 16:19:26,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 222.875) internal successors, (1783), 8 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:26,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 539.0) internal successors, (4851), 9 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:26,969 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 539.0) internal successors, (4851), 9 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:26,970 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 266 flow. Second operand 8 states and 1783 transitions. [2022-12-13 16:19:26,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 103 transitions, 662 flow [2022-12-13 16:19:26,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 103 transitions, 640 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 16:19:26,975 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 341 flow [2022-12-13 16:19:26,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=341, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2022-12-13 16:19:26,976 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 35 predicate places. [2022-12-13 16:19:26,976 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 341 flow [2022-12-13 16:19:26,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 213.77777777777777) internal successors, (1924), 9 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:26,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:26,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:26,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:19:27,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:27,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:27,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:27,179 INFO L85 PathProgramCache]: Analyzing trace with hash 910274644, now seen corresponding path program 2 times [2022-12-13 16:19:27,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:27,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359219729] [2022-12-13 16:19:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:27,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:27,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:27,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359219729] [2022-12-13 16:19:27,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359219729] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:27,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879474837] [2022-12-13 16:19:27,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:19:27,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:27,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:27,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:27,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:19:27,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:19:27,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:19:27,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 16:19:27,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:27,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:27,503 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 130 treesize of output 111 [2022-12-13 16:19:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:19:27,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:19:27,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879474837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:19:27,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:19:27,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2022-12-13 16:19:27,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658851776] [2022-12-13 16:19:27,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:27,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:19:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:19:27,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:19:27,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 539 [2022-12-13 16:19:27,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 219.28571428571428) internal successors, (1535), 7 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:27,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:27,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 539 [2022-12-13 16:19:27,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:27,974 INFO L130 PetriNetUnfolder]: 378/732 cut-off events. [2022-12-13 16:19:27,974 INFO L131 PetriNetUnfolder]: For 1018/1018 co-relation queries the response was YES. [2022-12-13 16:19:27,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 732 events. 378/732 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3631 event pairs, 64 based on Foata normal form. 19/663 useless extension candidates. Maximal degree in co-relation 1811. Up to 324 conditions per place. [2022-12-13 16:19:27,976 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 65 selfloop transitions, 23 changer transitions 6/94 dead transitions. [2022-12-13 16:19:27,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 655 flow [2022-12-13 16:19:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:19:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:19:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1811 transitions. [2022-12-13 16:19:27,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4199907235621521 [2022-12-13 16:19:27,980 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1811 transitions. [2022-12-13 16:19:27,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1811 transitions. [2022-12-13 16:19:27,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:27,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1811 transitions. [2022-12-13 16:19:27,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 226.375) internal successors, (1811), 8 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:27,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 539.0) internal successors, (4851), 9 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:27,988 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 539.0) internal successors, (4851), 9 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:27,988 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 341 flow. Second operand 8 states and 1811 transitions. [2022-12-13 16:19:27,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 655 flow [2022-12-13 16:19:27,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 624 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-12-13 16:19:27,992 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 421 flow [2022-12-13 16:19:27,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=421, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2022-12-13 16:19:27,992 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 44 predicate places. [2022-12-13 16:19:27,993 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 421 flow [2022-12-13 16:19:27,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.28571428571428) internal successors, (1535), 7 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:27,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:27,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:27,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:19:28,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:28,194 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:28,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:28,195 INFO L85 PathProgramCache]: Analyzing trace with hash 833026442, now seen corresponding path program 1 times [2022-12-13 16:19:28,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:28,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320142261] [2022-12-13 16:19:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:28,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:28,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:28,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320142261] [2022-12-13 16:19:28,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320142261] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:28,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131176166] [2022-12-13 16:19:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:28,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:28,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:28,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:28,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:19:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:28,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:19:28,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:28,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:28,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131176166] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:28,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:19:28,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2022-12-13 16:19:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117636531] [2022-12-13 16:19:28,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:19:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:19:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:19:28,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 539 [2022-12-13 16:19:28,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 421 flow. Second operand has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:28,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:28,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 539 [2022-12-13 16:19:28,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:28,898 INFO L130 PetriNetUnfolder]: 398/776 cut-off events. [2022-12-13 16:19:28,898 INFO L131 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2022-12-13 16:19:28,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2317 conditions, 776 events. 398/776 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3925 event pairs, 126 based on Foata normal form. 0/688 useless extension candidates. Maximal degree in co-relation 2068. Up to 216 conditions per place. [2022-12-13 16:19:28,902 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 90 selfloop transitions, 15 changer transitions 8/113 dead transitions. [2022-12-13 16:19:28,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 113 transitions, 854 flow [2022-12-13 16:19:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:19:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 16:19:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2271 transitions. [2022-12-13 16:19:28,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42133580705009277 [2022-12-13 16:19:28,905 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2271 transitions. [2022-12-13 16:19:28,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2271 transitions. [2022-12-13 16:19:28,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:28,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2271 transitions. [2022-12-13 16:19:28,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 227.1) internal successors, (2271), 10 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:28,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 539.0) internal successors, (5929), 11 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:28,914 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 539.0) internal successors, (5929), 11 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:28,914 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 421 flow. Second operand 10 states and 2271 transitions. [2022-12-13 16:19:28,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 113 transitions, 854 flow [2022-12-13 16:19:28,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 16:19:28,918 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 454 flow [2022-12-13 16:19:28,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=454, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2022-12-13 16:19:28,919 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 52 predicate places. [2022-12-13 16:19:28,919 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 454 flow [2022-12-13 16:19:28,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:28,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:28,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:28,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:19:29,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:29,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash -712795617, now seen corresponding path program 1 times [2022-12-13 16:19:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:29,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951527770] [2022-12-13 16:19:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:29,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:29,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951527770] [2022-12-13 16:19:29,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951527770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:19:29,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:19:29,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:19:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725287783] [2022-12-13 16:19:29,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:29,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:19:29,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:19:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:19:29,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 539 [2022-12-13 16:19:29,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 454 flow. Second operand has 5 states, 5 states have (on average 228.6) internal successors, (1143), 5 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:29,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:29,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 539 [2022-12-13 16:19:29,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:29,388 INFO L130 PetriNetUnfolder]: 262/536 cut-off events. [2022-12-13 16:19:29,388 INFO L131 PetriNetUnfolder]: For 1324/1324 co-relation queries the response was YES. [2022-12-13 16:19:29,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 536 events. 262/536 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2504 event pairs, 167 based on Foata normal form. 24/560 useless extension candidates. Maximal degree in co-relation 1637. Up to 383 conditions per place. [2022-12-13 16:19:29,391 INFO L137 encePairwiseOnDemand]: 534/539 looper letters, 37 selfloop transitions, 2 changer transitions 26/65 dead transitions. [2022-12-13 16:19:29,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 547 flow [2022-12-13 16:19:29,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:19:29,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:19:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1169 transitions. [2022-12-13 16:19:29,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43376623376623374 [2022-12-13 16:19:29,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1169 transitions. [2022-12-13 16:19:29,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1169 transitions. [2022-12-13 16:19:29,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:29,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1169 transitions. [2022-12-13 16:19:29,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.8) internal successors, (1169), 5 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:29,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:29,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:29,398 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 454 flow. Second operand 5 states and 1169 transitions. [2022-12-13 16:19:29,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 547 flow [2022-12-13 16:19:29,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 513 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-12-13 16:19:29,402 INFO L231 Difference]: Finished difference. Result has 73 places, 39 transitions, 244 flow [2022-12-13 16:19:29,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=73, PETRI_TRANSITIONS=39} [2022-12-13 16:19:29,403 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 48 predicate places. [2022-12-13 16:19:29,403 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 39 transitions, 244 flow [2022-12-13 16:19:29,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 228.6) internal successors, (1143), 5 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:29,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:29,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:29,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:19:29,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash -546721271, now seen corresponding path program 1 times [2022-12-13 16:19:29,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:29,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102607778] [2022-12-13 16:19:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:29,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:29,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:29,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102607778] [2022-12-13 16:19:29,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102607778] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:29,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568524587] [2022-12-13 16:19:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:29,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:29,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:29,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:29,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:19:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:29,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 16:19:29,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:29,965 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 11 treesize of output 7 [2022-12-13 16:19:30,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:19:30,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:19:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:30,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:30,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:30,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 37 [2022-12-13 16:19:30,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:30,625 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 598 treesize of output 546 [2022-12-13 16:19:30,640 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:30,641 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 534 treesize of output 479 [2022-12-13 16:19:30,658 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:30,658 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 470 treesize of output 447 [2022-12-13 16:19:30,788 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:30,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 37 [2022-12-13 16:19:30,800 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:30,800 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 598 treesize of output 546 [2022-12-13 16:19:30,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:30,816 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 534 treesize of output 511 [2022-12-13 16:19:30,830 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:30,831 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 502 treesize of output 447 [2022-12-13 16:19:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:31,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568524587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:19:31,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:19:31,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2022-12-13 16:19:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081182436] [2022-12-13 16:19:31,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:19:31,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 16:19:31,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 16:19:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=503, Unknown=12, NotChecked=0, Total=650 [2022-12-13 16:19:31,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 539 [2022-12-13 16:19:31,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 39 transitions, 244 flow. Second operand has 26 states, 26 states have (on average 165.57692307692307) internal successors, (4305), 26 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:31,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:31,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 539 [2022-12-13 16:19:31,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:32,408 INFO L130 PetriNetUnfolder]: 400/731 cut-off events. [2022-12-13 16:19:32,409 INFO L131 PetriNetUnfolder]: For 1727/1727 co-relation queries the response was YES. [2022-12-13 16:19:32,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 731 events. 400/731 cut-off events. For 1727/1727 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3344 event pairs, 105 based on Foata normal form. 16/747 useless extension candidates. Maximal degree in co-relation 2392. Up to 186 conditions per place. [2022-12-13 16:19:32,412 INFO L137 encePairwiseOnDemand]: 525/539 looper letters, 94 selfloop transitions, 23 changer transitions 1/118 dead transitions. [2022-12-13 16:19:32,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 817 flow [2022-12-13 16:19:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:19:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 16:19:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2572 transitions. [2022-12-13 16:19:32,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3181199752628324 [2022-12-13 16:19:32,420 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2572 transitions. [2022-12-13 16:19:32,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2572 transitions. [2022-12-13 16:19:32,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:32,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2572 transitions. [2022-12-13 16:19:32,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 171.46666666666667) internal successors, (2572), 15 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:32,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 539.0) internal successors, (8624), 16 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:32,429 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 539.0) internal successors, (8624), 16 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:32,429 INFO L175 Difference]: Start difference. First operand has 73 places, 39 transitions, 244 flow. Second operand 15 states and 2572 transitions. [2022-12-13 16:19:32,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 817 flow [2022-12-13 16:19:32,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 753 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-12-13 16:19:32,433 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 370 flow [2022-12-13 16:19:32,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=370, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2022-12-13 16:19:32,433 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 46 predicate places. [2022-12-13 16:19:32,434 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 370 flow [2022-12-13 16:19:32,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 165.57692307692307) internal successors, (4305), 26 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:32,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:32,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:32,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:19:32,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 16:19:32,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash -366112775, now seen corresponding path program 2 times [2022-12-13 16:19:32,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:32,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719339705] [2022-12-13 16:19:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:33,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719339705] [2022-12-13 16:19:33,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719339705] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:33,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453357164] [2022-12-13 16:19:33,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:19:33,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:33,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:33,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:33,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:19:33,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:19:33,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:19:33,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 16:19:33,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:33,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:33,410 INFO L321 Elim1Store]: treesize reduction 11, result has 87.1 percent of original size [2022-12-13 16:19:33,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 99 [2022-12-13 16:19:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:33,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453357164] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:33,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:19:33,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 23 [2022-12-13 16:19:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451469692] [2022-12-13 16:19:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:33,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:19:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:19:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-12-13 16:19:33,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 539 [2022-12-13 16:19:33,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 206.9) internal successors, (2069), 10 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:33,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:33,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 539 [2022-12-13 16:19:33,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:34,239 INFO L130 PetriNetUnfolder]: 457/828 cut-off events. [2022-12-13 16:19:34,239 INFO L131 PetriNetUnfolder]: For 2910/2910 co-relation queries the response was YES. [2022-12-13 16:19:34,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 828 events. 457/828 cut-off events. For 2910/2910 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3791 event pairs, 166 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 3383. Up to 325 conditions per place. [2022-12-13 16:19:34,243 INFO L137 encePairwiseOnDemand]: 526/539 looper letters, 88 selfloop transitions, 40 changer transitions 1/129 dead transitions. [2022-12-13 16:19:34,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 1085 flow [2022-12-13 16:19:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:19:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 16:19:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2976 transitions. [2022-12-13 16:19:34,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3943811290750066 [2022-12-13 16:19:34,247 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2976 transitions. [2022-12-13 16:19:34,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2976 transitions. [2022-12-13 16:19:34,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:34,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2976 transitions. [2022-12-13 16:19:34,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.57142857142858) internal successors, (2976), 14 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 539.0) internal successors, (8085), 15 states have internal predecessors, (8085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,255 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 539.0) internal successors, (8085), 15 states have internal predecessors, (8085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,255 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 370 flow. Second operand 14 states and 2976 transitions. [2022-12-13 16:19:34,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 1085 flow [2022-12-13 16:19:34,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 1043 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-12-13 16:19:34,263 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 679 flow [2022-12-13 16:19:34,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=679, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2022-12-13 16:19:34,263 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 61 predicate places. [2022-12-13 16:19:34,263 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 679 flow [2022-12-13 16:19:34,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 206.9) internal successors, (2069), 10 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:34,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:34,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:19:34,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:34,466 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:34,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:34,467 INFO L85 PathProgramCache]: Analyzing trace with hash 865695373, now seen corresponding path program 1 times [2022-12-13 16:19:34,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:34,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865161120] [2022-12-13 16:19:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:34,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:19:34,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:34,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865161120] [2022-12-13 16:19:34,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865161120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:19:34,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:19:34,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:19:34,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607618040] [2022-12-13 16:19:34,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:34,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:19:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:19:34,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:19:34,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 539 [2022-12-13 16:19:34,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 679 flow. Second operand has 5 states, 5 states have (on average 228.8) internal successors, (1144), 5 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:34,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 539 [2022-12-13 16:19:34,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:34,811 INFO L130 PetriNetUnfolder]: 381/693 cut-off events. [2022-12-13 16:19:34,811 INFO L131 PetriNetUnfolder]: For 4089/4089 co-relation queries the response was YES. [2022-12-13 16:19:34,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 693 events. 381/693 cut-off events. For 4089/4089 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2986 event pairs, 182 based on Foata normal form. 12/705 useless extension candidates. Maximal degree in co-relation 3399. Up to 618 conditions per place. [2022-12-13 16:19:34,814 INFO L137 encePairwiseOnDemand]: 534/539 looper letters, 61 selfloop transitions, 2 changer transitions 18/81 dead transitions. [2022-12-13 16:19:34,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 837 flow [2022-12-13 16:19:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:19:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:19:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1167 transitions. [2022-12-13 16:19:34,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43302411873840446 [2022-12-13 16:19:34,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1167 transitions. [2022-12-13 16:19:34,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1167 transitions. [2022-12-13 16:19:34,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:34,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1167 transitions. [2022-12-13 16:19:34,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,820 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,820 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 679 flow. Second operand 5 states and 1167 transitions. [2022-12-13 16:19:34,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 837 flow [2022-12-13 16:19:34,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 729 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-12-13 16:19:34,830 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 480 flow [2022-12-13 16:19:34,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2022-12-13 16:19:34,831 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 51 predicate places. [2022-12-13 16:19:34,831 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 480 flow [2022-12-13 16:19:34,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 228.8) internal successors, (1144), 5 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:34,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:34,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:34,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:19:34,832 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:34,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:34,832 INFO L85 PathProgramCache]: Analyzing trace with hash 63057979, now seen corresponding path program 3 times [2022-12-13 16:19:34,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:34,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444736871] [2022-12-13 16:19:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:34,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:35,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:35,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444736871] [2022-12-13 16:19:35,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444736871] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:35,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471077208] [2022-12-13 16:19:35,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:19:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:35,186 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:35,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:19:35,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 16:19:35,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:19:35,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 16:19:35,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:35,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:35,644 INFO L321 Elim1Store]: treesize reduction 30, result has 58.9 percent of original size [2022-12-13 16:19:35,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2022-12-13 16:19:35,663 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-12-13 16:19:35,663 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 20 treesize of output 4 [2022-12-13 16:19:35,668 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-12-13 16:19:35,669 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 20 treesize of output 4 [2022-12-13 16:19:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:35,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471077208] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:35,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:19:35,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 21 [2022-12-13 16:19:35,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458442373] [2022-12-13 16:19:35,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:35,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:19:35,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:35,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:19:35,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-12-13 16:19:36,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 539 [2022-12-13 16:19:36,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 480 flow. Second operand has 10 states, 10 states have (on average 206.9) internal successors, (2069), 10 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:36,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:36,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 539 [2022-12-13 16:19:36,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:36,841 INFO L130 PetriNetUnfolder]: 395/706 cut-off events. [2022-12-13 16:19:36,841 INFO L131 PetriNetUnfolder]: For 3430/3430 co-relation queries the response was YES. [2022-12-13 16:19:36,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3219 conditions, 706 events. 395/706 cut-off events. For 3430/3430 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3087 event pairs, 133 based on Foata normal form. 16/722 useless extension candidates. Maximal degree in co-relation 3178. Up to 381 conditions per place. [2022-12-13 16:19:36,845 INFO L137 encePairwiseOnDemand]: 527/539 looper letters, 79 selfloop transitions, 28 changer transitions 0/107 dead transitions. [2022-12-13 16:19:36,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 966 flow [2022-12-13 16:19:36,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:19:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 16:19:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2118 transitions. [2022-12-13 16:19:36,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3929499072356215 [2022-12-13 16:19:36,849 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2118 transitions. [2022-12-13 16:19:36,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2118 transitions. [2022-12-13 16:19:36,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:36,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2118 transitions. [2022-12-13 16:19:36,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 211.8) internal successors, (2118), 10 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:36,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 539.0) internal successors, (5929), 11 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:36,856 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 539.0) internal successors, (5929), 11 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:36,856 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 480 flow. Second operand 10 states and 2118 transitions. [2022-12-13 16:19:36,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 966 flow [2022-12-13 16:19:36,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 107 transitions, 924 flow, removed 19 selfloop flow, removed 6 redundant places. [2022-12-13 16:19:36,863 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 632 flow [2022-12-13 16:19:36,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=632, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2022-12-13 16:19:36,863 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 48 predicate places. [2022-12-13 16:19:36,863 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 632 flow [2022-12-13 16:19:36,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 206.9) internal successors, (2069), 10 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:36,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:36,864 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:36,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:19:37,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 16:19:37,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1658096889, now seen corresponding path program 4 times [2022-12-13 16:19:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:37,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694591387] [2022-12-13 16:19:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:37,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:37,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694591387] [2022-12-13 16:19:37,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694591387] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:37,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453441495] [2022-12-13 16:19:37,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:19:37,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:37,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:37,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:37,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:19:37,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:19:37,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:19:37,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 16:19:37,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:37,605 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 11 treesize of output 7 [2022-12-13 16:19:37,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:19:37,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:19:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:19:37,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:19:38,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453441495] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:19:38,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:19:38,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 25 [2022-12-13 16:19:38,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442658931] [2022-12-13 16:19:38,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:19:38,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 16:19:38,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 16:19:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-12-13 16:19:41,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 539 [2022-12-13 16:19:41,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 632 flow. Second operand has 25 states, 25 states have (on average 194.08) internal successors, (4852), 25 states have internal predecessors, (4852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:41,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:41,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 539 [2022-12-13 16:19:41,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:42,512 INFO L130 PetriNetUnfolder]: 474/855 cut-off events. [2022-12-13 16:19:42,512 INFO L131 PetriNetUnfolder]: For 3683/3683 co-relation queries the response was YES. [2022-12-13 16:19:42,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 855 events. 474/855 cut-off events. For 3683/3683 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3998 event pairs, 118 based on Foata normal form. 16/871 useless extension candidates. Maximal degree in co-relation 3911. Up to 446 conditions per place. [2022-12-13 16:19:42,516 INFO L137 encePairwiseOnDemand]: 524/539 looper letters, 89 selfloop transitions, 71 changer transitions 0/160 dead transitions. [2022-12-13 16:19:42,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 160 transitions, 1487 flow [2022-12-13 16:19:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 16:19:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 16:19:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3769 transitions. [2022-12-13 16:19:42,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3680304657748267 [2022-12-13 16:19:42,520 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3769 transitions. [2022-12-13 16:19:42,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3769 transitions. [2022-12-13 16:19:42,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:42,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3769 transitions. [2022-12-13 16:19:42,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 198.3684210526316) internal successors, (3769), 19 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:42,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:42,529 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:42,530 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 632 flow. Second operand 19 states and 3769 transitions. [2022-12-13 16:19:42,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 160 transitions, 1487 flow [2022-12-13 16:19:42,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 160 transitions, 1417 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-12-13 16:19:42,538 INFO L231 Difference]: Finished difference. Result has 93 places, 113 transitions, 1185 flow [2022-12-13 16:19:42,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1185, PETRI_PLACES=93, PETRI_TRANSITIONS=113} [2022-12-13 16:19:42,539 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 68 predicate places. [2022-12-13 16:19:42,539 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 113 transitions, 1185 flow [2022-12-13 16:19:42,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 194.08) internal successors, (4852), 25 states have internal predecessors, (4852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:42,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:42,540 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:42,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 16:19:42,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 16:19:42,741 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:42,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1248093649, now seen corresponding path program 5 times [2022-12-13 16:19:42,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:42,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639566450] [2022-12-13 16:19:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:43,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:43,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639566450] [2022-12-13 16:19:43,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639566450] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:43,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996663453] [2022-12-13 16:19:43,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:19:43,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:43,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:43,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:43,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:19:43,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:19:43,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:19:43,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 16:19:43,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:19:43,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:19:43,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996663453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:19:43,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:19:43,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2022-12-13 16:19:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267641875] [2022-12-13 16:19:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:43,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:19:43,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:19:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:19:43,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 539 [2022-12-13 16:19:43,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 113 transitions, 1185 flow. Second operand has 9 states, 9 states have (on average 215.11111111111111) internal successors, (1936), 9 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:43,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:43,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 539 [2022-12-13 16:19:43,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:43,934 INFO L130 PetriNetUnfolder]: 466/827 cut-off events. [2022-12-13 16:19:43,934 INFO L131 PetriNetUnfolder]: For 5074/5074 co-relation queries the response was YES. [2022-12-13 16:19:43,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4502 conditions, 827 events. 466/827 cut-off events. For 5074/5074 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3772 event pairs, 147 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 4451. Up to 508 conditions per place. [2022-12-13 16:19:43,939 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 100 selfloop transitions, 32 changer transitions 0/132 dead transitions. [2022-12-13 16:19:43,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 132 transitions, 1568 flow [2022-12-13 16:19:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:19:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:19:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1548 transitions. [2022-12-13 16:19:43,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4102835939570633 [2022-12-13 16:19:43,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1548 transitions. [2022-12-13 16:19:43,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1548 transitions. [2022-12-13 16:19:43,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:43,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1548 transitions. [2022-12-13 16:19:43,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 221.14285714285714) internal successors, (1548), 7 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:43,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:43,944 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:43,944 INFO L175 Difference]: Start difference. First operand has 93 places, 113 transitions, 1185 flow. Second operand 7 states and 1548 transitions. [2022-12-13 16:19:43,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 132 transitions, 1568 flow [2022-12-13 16:19:43,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 1485 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-12-13 16:19:43,960 INFO L231 Difference]: Finished difference. Result has 96 places, 115 transitions, 1198 flow [2022-12-13 16:19:43,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1198, PETRI_PLACES=96, PETRI_TRANSITIONS=115} [2022-12-13 16:19:43,960 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 71 predicate places. [2022-12-13 16:19:43,960 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 115 transitions, 1198 flow [2022-12-13 16:19:43,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 215.11111111111111) internal successors, (1936), 9 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:43,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:43,961 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:43,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:19:44,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 16:19:44,162 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1997420251, now seen corresponding path program 6 times [2022-12-13 16:19:44,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:44,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359301775] [2022-12-13 16:19:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:44,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:44,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:44,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359301775] [2022-12-13 16:19:44,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359301775] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:44,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821479721] [2022-12-13 16:19:44,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:19:44,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:44,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:44,624 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:44,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:19:44,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 16:19:44,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:19:44,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 16:19:44,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:44,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:44,949 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-12-13 16:19:44,949 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 20 treesize of output 4 [2022-12-13 16:19:44,983 INFO L321 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-12-13 16:19:44,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 70 [2022-12-13 16:19:45,000 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-12-13 16:19:45,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 4 [2022-12-13 16:19:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:45,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821479721] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:45,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:19:45,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 22 [2022-12-13 16:19:45,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200113244] [2022-12-13 16:19:45,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:19:45,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:19:45,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:19:45,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-12-13 16:19:45,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 539 [2022-12-13 16:19:45,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 115 transitions, 1198 flow. Second operand has 10 states, 10 states have (on average 206.9) internal successors, (2069), 10 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:45,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:45,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 539 [2022-12-13 16:19:45,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:46,003 INFO L130 PetriNetUnfolder]: 458/799 cut-off events. [2022-12-13 16:19:46,003 INFO L131 PetriNetUnfolder]: For 4665/4665 co-relation queries the response was YES. [2022-12-13 16:19:46,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4330 conditions, 799 events. 458/799 cut-off events. For 4665/4665 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3557 event pairs, 108 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 4280. Up to 405 conditions per place. [2022-12-13 16:19:46,009 INFO L137 encePairwiseOnDemand]: 526/539 looper letters, 79 selfloop transitions, 62 changer transitions 0/141 dead transitions. [2022-12-13 16:19:46,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 141 transitions, 1622 flow [2022-12-13 16:19:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 16:19:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 16:19:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2746 transitions. [2022-12-13 16:19:46,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.391893820465249 [2022-12-13 16:19:46,014 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2746 transitions. [2022-12-13 16:19:46,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2746 transitions. [2022-12-13 16:19:46,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:46,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2746 transitions. [2022-12-13 16:19:46,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 211.23076923076923) internal successors, (2746), 13 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:46,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 539.0) internal successors, (7546), 14 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:46,024 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 539.0) internal successors, (7546), 14 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:46,024 INFO L175 Difference]: Start difference. First operand has 96 places, 115 transitions, 1198 flow. Second operand 13 states and 2746 transitions. [2022-12-13 16:19:46,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 141 transitions, 1622 flow [2022-12-13 16:19:46,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 141 transitions, 1564 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 16:19:46,044 INFO L231 Difference]: Finished difference. Result has 103 places, 113 transitions, 1243 flow [2022-12-13 16:19:46,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1243, PETRI_PLACES=103, PETRI_TRANSITIONS=113} [2022-12-13 16:19:46,045 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2022-12-13 16:19:46,045 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 113 transitions, 1243 flow [2022-12-13 16:19:46,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 206.9) internal successors, (2069), 10 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:46,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:46,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:46,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 16:19:46,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:19:46,246 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2020025315, now seen corresponding path program 7 times [2022-12-13 16:19:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:46,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497992253] [2022-12-13 16:19:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:46,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:46,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:46,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497992253] [2022-12-13 16:19:46,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497992253] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:46,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814608677] [2022-12-13 16:19:46,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 16:19:46,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:46,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:46,555 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:46,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:19:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:46,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 16:19:46,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:46,711 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 11 treesize of output 7 [2022-12-13 16:19:46,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:19:46,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:19:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:46,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:47,213 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:47,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 37 [2022-12-13 16:19:47,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:47,222 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 294 treesize of output 274 [2022-12-13 16:19:47,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:47,232 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 262 treesize of output 239 [2022-12-13 16:19:47,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:47,243 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 230 treesize of output 223 [2022-12-13 16:19:47,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:47,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 37 [2022-12-13 16:19:47,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:47,392 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 294 treesize of output 274 [2022-12-13 16:19:47,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:47,402 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 262 treesize of output 239 [2022-12-13 16:19:47,411 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:47,411 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 230 treesize of output 223 [2022-12-13 16:19:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:47,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814608677] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:19:47,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:19:47,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2022-12-13 16:19:47,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409584669] [2022-12-13 16:19:47,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:19:47,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 16:19:47,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:19:47,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 16:19:47,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=504, Unknown=14, NotChecked=0, Total=650 [2022-12-13 16:19:48,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 539 [2022-12-13 16:19:48,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 113 transitions, 1243 flow. Second operand has 26 states, 26 states have (on average 165.53846153846155) internal successors, (4304), 26 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:48,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:19:48,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 539 [2022-12-13 16:19:48,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:19:49,181 INFO L130 PetriNetUnfolder]: 582/1033 cut-off events. [2022-12-13 16:19:49,181 INFO L131 PetriNetUnfolder]: For 6979/6979 co-relation queries the response was YES. [2022-12-13 16:19:49,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5753 conditions, 1033 events. 582/1033 cut-off events. For 6979/6979 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4975 event pairs, 118 based on Foata normal form. 16/1049 useless extension candidates. Maximal degree in co-relation 5701. Up to 551 conditions per place. [2022-12-13 16:19:49,187 INFO L137 encePairwiseOnDemand]: 524/539 looper letters, 91 selfloop transitions, 78 changer transitions 0/169 dead transitions. [2022-12-13 16:19:49,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 169 transitions, 2054 flow [2022-12-13 16:19:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 16:19:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 16:19:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2210 transitions. [2022-12-13 16:19:49,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.31539888682745826 [2022-12-13 16:19:49,189 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2210 transitions. [2022-12-13 16:19:49,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2210 transitions. [2022-12-13 16:19:49,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:19:49,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2210 transitions. [2022-12-13 16:19:49,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 170.0) internal successors, (2210), 13 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:49,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 539.0) internal successors, (7546), 14 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:49,195 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 539.0) internal successors, (7546), 14 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:49,195 INFO L175 Difference]: Start difference. First operand has 103 places, 113 transitions, 1243 flow. Second operand 13 states and 2210 transitions. [2022-12-13 16:19:49,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 169 transitions, 2054 flow [2022-12-13 16:19:49,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 169 transitions, 1958 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-12-13 16:19:49,211 INFO L231 Difference]: Finished difference. Result has 113 places, 134 transitions, 1739 flow [2022-12-13 16:19:49,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1739, PETRI_PLACES=113, PETRI_TRANSITIONS=134} [2022-12-13 16:19:49,212 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 88 predicate places. [2022-12-13 16:19:49,212 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 134 transitions, 1739 flow [2022-12-13 16:19:49,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 165.53846153846155) internal successors, (4304), 26 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:19:49,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:19:49,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:19:49,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 16:19:49,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:49,413 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:19:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:19:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2043461395, now seen corresponding path program 8 times [2022-12-13 16:19:49,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:19:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730366070] [2022-12-13 16:19:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:19:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:19:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:19:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:49,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:19:49,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730366070] [2022-12-13 16:19:49,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730366070] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:19:49,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040186319] [2022-12-13 16:19:49,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:19:49,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:19:49,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:19:49,997 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:19:49,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0d7d861-c4c4-4870-ad08-2c1687aff7e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 16:19:50,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:19:50,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:19:50,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 16:19:50,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:19:50,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:19:50,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:19:50,168 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 16:19:50,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 16:19:50,193 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 11 treesize of output 7 [2022-12-13 16:19:50,230 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 16:19:50,231 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 [2022-12-13 16:19:50,287 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 11 treesize of output 7 [2022-12-13 16:19:50,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:19:50,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:19:50,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:19:50,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 23 [2022-12-13 16:19:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:19:50,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:19:51,394 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-12-13 16:19:51,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 53 [2022-12-13 16:19:51,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:51,410 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 97 treesize of output 109 [2022-12-13 16:19:51,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:51,419 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 54 treesize of output 55 [2022-12-13 16:19:51,474 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-12-13 16:19:51,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 348 treesize of output 126 [2022-12-13 16:19:51,509 INFO L321 Elim1Store]: treesize reduction 11, result has 70.3 percent of original size [2022-12-13 16:19:51,510 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 1920 treesize of output 1729 [2022-12-13 16:19:51,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:51,544 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 1632 treesize of output 1448 [2022-12-13 16:19:51,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:19:51,582 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 1494 treesize of output 1398