./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ --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 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 --- 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-dbf71c6-m [2022-10-17 10:58:13,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:58:13,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:58:13,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:58:13,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:58:13,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:58:13,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:58:13,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:58:13,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:58:13,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:58:13,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:58:13,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:58:13,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:58:13,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:58:13,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:58:13,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:58:13,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:58:13,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:58:13,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:58:13,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:58:13,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:58:13,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:58:13,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:58:13,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:58:13,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:58:13,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:58:13,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:58:13,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:58:13,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:58:13,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:58:13,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:58:13,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:58:13,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:58:13,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:58:13,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:58:13,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:58:13,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:58:13,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:58:13,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:58:13,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:58:13,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:58:13,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:58:13,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:58:13,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:58:13,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:58:13,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:58:13,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:58:13,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:58:13,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:58:13,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:58:13,879 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:58:13,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:58:13,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:58:13,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:58:13,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:58:13,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:58:13,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:58:13,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:58:13,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:58:13,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:58:13,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:58:13,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:58:13,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:58:13,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:58:13,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:58:13,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:58:13,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:13,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:58:13,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:58:13,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:58:13,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:58:13,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:58:13,886 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:58:13,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:58:13,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:58:13,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 [2022-10-17 10:58:14,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:58:14,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:58:14,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:58:14,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:58:14,208 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:58:14,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-10-17 10:58:14,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/data/47cf2273e/9f5d5b3fabe247c2bf031d2a7d8a2d98/FLAGbff439838 [2022-10-17 10:58:14,731 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:58:14,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-10-17 10:58:14,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/data/47cf2273e/9f5d5b3fabe247c2bf031d2a7d8a2d98/FLAGbff439838 [2022-10-17 10:58:15,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/data/47cf2273e/9f5d5b3fabe247c2bf031d2a7d8a2d98 [2022-10-17 10:58:15,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:58:15,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:58:15,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:15,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:58:15,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:58:15,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247e983c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15, skipping insertion in model container [2022-10-17 10:58:15,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:58:15,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:58:15,368 WARN L230 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_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-10-17 10:58:15,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:15,392 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:58:15,420 WARN L230 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_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-10-17 10:58:15,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:15,442 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:58:15,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15 WrapperNode [2022-10-17 10:58:15,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:15,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:15,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:58:15,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:58:15,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,516 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 297 [2022-10-17 10:58:15,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:15,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:58:15,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:58:15,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:58:15,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:58:15,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:58:15,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:58:15,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:58:15,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (1/1) ... [2022-10-17 10:58:15,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:15,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:15,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:58:15,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:58:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:58:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:58:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:58:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:58:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:58:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:58:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:58:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:58:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:58:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:58:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-10-17 10:58:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-10-17 10:58:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:58:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:58:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:58:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:58:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:58:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:58:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:58:15,662 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:58:15,838 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:58:15,841 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:58:16,498 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:58:16,818 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:58:16,818 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 10:58:16,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:16 BoogieIcfgContainer [2022-10-17 10:58:16,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:58:16,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:58:16,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:58:16,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:58:16,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:58:15" (1/3) ... [2022-10-17 10:58:16,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2893f8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:16, skipping insertion in model container [2022-10-17 10:58:16,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:15" (2/3) ... [2022-10-17 10:58:16,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2893f8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:16, skipping insertion in model container [2022-10-17 10:58:16,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:16" (3/3) ... [2022-10-17 10:58:16,833 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2022-10-17 10:58:16,844 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:58:16,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:58:16,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:58:16,855 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:58:16,943 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:58:17,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 206 transitions, 444 flow [2022-10-17 10:58:17,104 INFO L130 PetriNetUnfolder]: 15/202 cut-off events. [2022-10-17 10:58:17,105 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:58:17,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 202 events. 15/202 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2022-10-17 10:58:17,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 206 transitions, 444 flow [2022-10-17 10:58:17,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 189 transitions, 402 flow [2022-10-17 10:58:17,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:58:17,134 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;@6f3cb1d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:58:17,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:58:17,189 INFO L130 PetriNetUnfolder]: 15/188 cut-off events. [2022-10-17 10:58:17,189 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:58:17,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:58:17,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:17,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:58:17,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash -276996244, now seen corresponding path program 1 times [2022-10-17 10:58:17,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:17,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557293753] [2022-10-17 10:58:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:17,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:17,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557293753] [2022-10-17 10:58:17,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557293753] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:17,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:17,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:58:17,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232489808] [2022-10-17 10:58:17,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:17,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:58:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:17,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:58:17,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:58:17,727 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 206 [2022-10-17 10:58:17,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 189 transitions, 402 flow. Second operand has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:17,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:58:17,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 206 [2022-10-17 10:58:17,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:58:17,886 INFO L130 PetriNetUnfolder]: 118/325 cut-off events. [2022-10-17 10:58:17,887 INFO L131 PetriNetUnfolder]: For 61/62 co-relation queries the response was YES. [2022-10-17 10:58:17,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 325 events. 118/325 cut-off events. For 61/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 588 event pairs, 51 based on Foata normal form. 72/379 useless extension candidates. Maximal degree in co-relation 351. Up to 163 conditions per place. [2022-10-17 10:58:17,893 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 16 selfloop transitions, 0 changer transitions 5/179 dead transitions. [2022-10-17 10:58:17,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 179 transitions, 414 flow [2022-10-17 10:58:17,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:58:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:58:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2022-10-17 10:58:17,908 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9320388349514563 [2022-10-17 10:58:17,909 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2022-10-17 10:58:17,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2022-10-17 10:58:17,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:58:17,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2022-10-17 10:58:17,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:17,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:17,930 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:17,932 INFO L175 Difference]: Start difference. First operand has 187 places, 189 transitions, 402 flow. Second operand 2 states and 384 transitions. [2022-10-17 10:58:17,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 179 transitions, 414 flow [2022-10-17 10:58:17,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 179 transitions, 398 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-10-17 10:58:17,947 INFO L231 Difference]: Finished difference. Result has 180 places, 174 transitions, 356 flow [2022-10-17 10:58:17,949 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=180, PETRI_TRANSITIONS=174} [2022-10-17 10:58:17,958 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, -7 predicate places. [2022-10-17 10:58:17,959 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 174 transitions, 356 flow [2022-10-17 10:58:17,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:17,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:58:17,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:17,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:58:17,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:58:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash 927194731, now seen corresponding path program 1 times [2022-10-17 10:58:17,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:17,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205184904] [2022-10-17 10:58:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:17,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:18,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205184904] [2022-10-17 10:58:18,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205184904] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:18,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:18,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:58:18,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162892061] [2022-10-17 10:58:18,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:18,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:58:18,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:58:18,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:58:18,928 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 206 [2022-10-17 10:58:18,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 174 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:18,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:58:18,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 206 [2022-10-17 10:58:18,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:58:19,293 INFO L130 PetriNetUnfolder]: 133/378 cut-off events. [2022-10-17 10:58:19,294 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-10-17 10:58:19,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 378 events. 133/378 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 817 event pairs, 8 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 615. Up to 205 conditions per place. [2022-10-17 10:58:19,302 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 50 selfloop transitions, 7 changer transitions 4/188 dead transitions. [2022-10-17 10:58:19,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 188 transitions, 513 flow [2022-10-17 10:58:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:58:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:58:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1063 transitions. [2022-10-17 10:58:19,311 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7371705963938974 [2022-10-17 10:58:19,311 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1063 transitions. [2022-10-17 10:58:19,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1063 transitions. [2022-10-17 10:58:19,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:58:19,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1063 transitions. [2022-10-17 10:58:19,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:19,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:19,325 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:19,325 INFO L175 Difference]: Start difference. First operand has 180 places, 174 transitions, 356 flow. Second operand 7 states and 1063 transitions. [2022-10-17 10:58:19,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 188 transitions, 513 flow [2022-10-17 10:58:19,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 188 transitions, 513 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:58:19,334 INFO L231 Difference]: Finished difference. Result has 184 places, 178 transitions, 397 flow [2022-10-17 10:58:19,335 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2022-10-17 10:58:19,336 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, -3 predicate places. [2022-10-17 10:58:19,336 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 397 flow [2022-10-17 10:58:19,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:19,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:58:19,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:19,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:58:19,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:58:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:19,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1587033649, now seen corresponding path program 1 times [2022-10-17 10:58:19,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:19,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554516908] [2022-10-17 10:58:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:20,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554516908] [2022-10-17 10:58:20,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554516908] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:20,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:20,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:58:20,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842708002] [2022-10-17 10:58:20,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:20,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:58:20,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:20,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:58:20,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:58:20,007 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 206 [2022-10-17 10:58:20,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:20,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:58:20,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 206 [2022-10-17 10:58:20,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:58:20,414 INFO L130 PetriNetUnfolder]: 346/867 cut-off events. [2022-10-17 10:58:20,414 INFO L131 PetriNetUnfolder]: For 165/167 co-relation queries the response was YES. [2022-10-17 10:58:20,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 867 events. 346/867 cut-off events. For 165/167 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3621 event pairs, 49 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 1638. Up to 208 conditions per place. [2022-10-17 10:58:20,426 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 59 selfloop transitions, 16 changer transitions 4/213 dead transitions. [2022-10-17 10:58:20,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 663 flow [2022-10-17 10:58:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:58:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:58:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2022-10-17 10:58:20,431 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7742718446601942 [2022-10-17 10:58:20,431 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2022-10-17 10:58:20,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2022-10-17 10:58:20,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:58:20,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2022-10-17 10:58:20,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:20,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:20,442 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:20,443 INFO L175 Difference]: Start difference. First operand has 184 places, 178 transitions, 397 flow. Second operand 8 states and 1276 transitions. [2022-10-17 10:58:20,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 663 flow [2022-10-17 10:58:20,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 213 transitions, 644 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-10-17 10:58:20,451 INFO L231 Difference]: Finished difference. Result has 191 places, 187 transitions, 500 flow [2022-10-17 10:58:20,451 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=191, PETRI_TRANSITIONS=187} [2022-10-17 10:58:20,452 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 4 predicate places. [2022-10-17 10:58:20,452 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 187 transitions, 500 flow [2022-10-17 10:58:20,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:20,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:58:20,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:20,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:58:20,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:58:20,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1222635345, now seen corresponding path program 1 times [2022-10-17 10:58:20,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:20,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297909394] [2022-10-17 10:58:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:58:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:21,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297909394] [2022-10-17 10:58:21,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297909394] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:21,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:21,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:58:21,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886449056] [2022-10-17 10:58:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:21,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:58:21,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:58:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:58:21,065 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 206 [2022-10-17 10:58:21,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 187 transitions, 500 flow. Second operand has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:21,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:58:21,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 206 [2022-10-17 10:58:21,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:58:21,735 INFO L130 PetriNetUnfolder]: 378/1024 cut-off events. [2022-10-17 10:58:21,735 INFO L131 PetriNetUnfolder]: For 796/797 co-relation queries the response was YES. [2022-10-17 10:58:21,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1024 events. 378/1024 cut-off events. For 796/797 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4721 event pairs, 103 based on Foata normal form. 25/984 useless extension candidates. Maximal degree in co-relation 2255. Up to 503 conditions per place. [2022-10-17 10:58:21,749 INFO L137 encePairwiseOnDemand]: 193/206 looper letters, 69 selfloop transitions, 4 changer transitions 22/213 dead transitions. [2022-10-17 10:58:21,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 213 transitions, 794 flow [2022-10-17 10:58:21,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:58:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:58:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1557 transitions. [2022-10-17 10:58:21,756 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6871138570167696 [2022-10-17 10:58:21,756 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1557 transitions. [2022-10-17 10:58:21,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1557 transitions. [2022-10-17 10:58:21,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:58:21,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1557 transitions. [2022-10-17 10:58:21,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:21,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:21,768 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:21,768 INFO L175 Difference]: Start difference. First operand has 191 places, 187 transitions, 500 flow. Second operand 11 states and 1557 transitions. [2022-10-17 10:58:21,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 213 transitions, 794 flow [2022-10-17 10:58:21,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 213 transitions, 790 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-10-17 10:58:21,778 INFO L231 Difference]: Finished difference. Result has 204 places, 188 transitions, 532 flow [2022-10-17 10:58:21,779 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=532, PETRI_PLACES=204, PETRI_TRANSITIONS=188} [2022-10-17 10:58:21,780 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 17 predicate places. [2022-10-17 10:58:21,780 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 188 transitions, 532 flow [2022-10-17 10:58:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:21,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:58:21,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:21,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:58:21,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:58:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1579373432, now seen corresponding path program 1 times [2022-10-17 10:58:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:21,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956278310] [2022-10-17 10:58:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:21,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:58:22,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:22,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956278310] [2022-10-17 10:58:22,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956278310] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:22,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:22,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:58:22,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134940021] [2022-10-17 10:58:22,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:22,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:58:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:22,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:58:22,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:58:22,304 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 206 [2022-10-17 10:58:22,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 188 transitions, 532 flow. Second operand has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:22,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:58:22,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 206 [2022-10-17 10:58:22,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:58:22,804 INFO L130 PetriNetUnfolder]: 559/1353 cut-off events. [2022-10-17 10:58:22,804 INFO L131 PetriNetUnfolder]: For 1253/1255 co-relation queries the response was YES. [2022-10-17 10:58:22,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3156 conditions, 1353 events. 559/1353 cut-off events. For 1253/1255 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7021 event pairs, 59 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 3139. Up to 504 conditions per place. [2022-10-17 10:58:22,826 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 63 selfloop transitions, 19 changer transitions 6/223 dead transitions. [2022-10-17 10:58:22,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 223 transitions, 864 flow [2022-10-17 10:58:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:58:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:58:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2022-10-17 10:58:22,830 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7742718446601942 [2022-10-17 10:58:22,831 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2022-10-17 10:58:22,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2022-10-17 10:58:22,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:58:22,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2022-10-17 10:58:22,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:22,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:22,841 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:22,841 INFO L175 Difference]: Start difference. First operand has 204 places, 188 transitions, 532 flow. Second operand 8 states and 1276 transitions. [2022-10-17 10:58:22,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 223 transitions, 864 flow [2022-10-17 10:58:22,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 223 transitions, 820 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-10-17 10:58:22,851 INFO L231 Difference]: Finished difference. Result has 203 places, 197 transitions, 658 flow [2022-10-17 10:58:22,851 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=203, PETRI_TRANSITIONS=197} [2022-10-17 10:58:22,852 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 16 predicate places. [2022-10-17 10:58:22,852 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 197 transitions, 658 flow [2022-10-17 10:58:22,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:22,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:58:22,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:22,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:58:22,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:58:22,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash 331378776, now seen corresponding path program 1 times [2022-10-17 10:58:22,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:22,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10053495] [2022-10-17 10:58:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:22,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:58:23,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:23,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10053495] [2022-10-17 10:58:23,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10053495] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:58:23,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066128716] [2022-10-17 10:58:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:23,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:58:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:23,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:58:23,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:58:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:23,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 46 conjunts are in the unsatisfiable core [2022-10-17 10:58:23,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:24,512 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-17 10:58:24,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 14 [2022-10-17 10:58:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:58:24,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:58:25,055 INFO L356 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-10-17 10:58:25,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-10-17 10:58:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:58:25,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066128716] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:58:25,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:58:25,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 27 [2022-10-17 10:58:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184782792] [2022-10-17 10:58:25,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:58:25,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-17 10:58:25,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-17 10:58:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-10-17 10:58:25,289 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 206 [2022-10-17 10:58:25,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 197 transitions, 658 flow. Second operand has 27 states, 27 states have (on average 120.48148148148148) internal successors, (3253), 27 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:25,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:58:25,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 206 [2022-10-17 10:58:25,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:58:29,105 INFO L130 PetriNetUnfolder]: 2575/5660 cut-off events. [2022-10-17 10:58:29,105 INFO L131 PetriNetUnfolder]: For 8883/8883 co-relation queries the response was YES. [2022-10-17 10:58:29,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14771 conditions, 5660 events. 2575/5660 cut-off events. For 8883/8883 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 40803 event pairs, 28 based on Foata normal form. 36/5385 useless extension candidates. Maximal degree in co-relation 14754. Up to 2601 conditions per place. [2022-10-17 10:58:29,182 INFO L137 encePairwiseOnDemand]: 178/206 looper letters, 206 selfloop transitions, 142 changer transitions 42/489 dead transitions. [2022-10-17 10:58:29,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 489 transitions, 2758 flow [2022-10-17 10:58:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-10-17 10:58:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-10-17 10:58:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4365 transitions. [2022-10-17 10:58:29,198 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6054091539528432 [2022-10-17 10:58:29,198 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4365 transitions. [2022-10-17 10:58:29,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4365 transitions. [2022-10-17 10:58:29,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:58:29,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4365 transitions. [2022-10-17 10:58:29,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 124.71428571428571) internal successors, (4365), 35 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:29,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 206.0) internal successors, (7416), 36 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:29,237 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 206.0) internal successors, (7416), 36 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:29,237 INFO L175 Difference]: Start difference. First operand has 203 places, 197 transitions, 658 flow. Second operand 35 states and 4365 transitions. [2022-10-17 10:58:29,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 489 transitions, 2758 flow [2022-10-17 10:58:29,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 489 transitions, 2730 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-10-17 10:58:29,262 INFO L231 Difference]: Finished difference. Result has 252 places, 329 transitions, 1934 flow [2022-10-17 10:58:29,262 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1934, PETRI_PLACES=252, PETRI_TRANSITIONS=329} [2022-10-17 10:58:29,263 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 65 predicate places. [2022-10-17 10:58:29,263 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 329 transitions, 1934 flow [2022-10-17 10:58:29,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 120.48148148148148) internal successors, (3253), 27 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:29,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:58:29,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:29,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 10:58:29,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:58:29,481 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:58:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1429900405, now seen corresponding path program 2 times [2022-10-17 10:58:29,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:29,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232567373] [2022-10-17 10:58:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:33,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:33,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232567373] [2022-10-17 10:58:33,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232567373] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:58:33,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251590077] [2022-10-17 10:58:33,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:58:33,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:58:33,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:33,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:58:33,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd88555d-3578-4edb-9b4b-f4b7efdbfb24/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:58:33,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:58:33,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:58:33,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 73 conjunts are in the unsatisfiable core [2022-10-17 10:58:33,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:35,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:58:35,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-10-17 10:58:35,684 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-17 10:58:35,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 14 [2022-10-17 10:58:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:35,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:58:36,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2022-10-17 10:58:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:38,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251590077] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:58:38,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:58:38,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 72 [2022-10-17 10:58:38,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788974111] [2022-10-17 10:58:38,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:58:38,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-10-17 10:58:38,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:38,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-10-17 10:58:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=4752, Unknown=1, NotChecked=0, Total=5112 [2022-10-17 10:58:38,492 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2022-10-17 10:58:38,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 329 transitions, 1934 flow. Second operand has 72 states, 72 states have (on average 100.125) internal successors, (7209), 72 states have internal predecessors, (7209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:38,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:58:38,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2022-10-17 10:58:38,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand