./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a --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 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 --- 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-b5237d8 [2022-11-21 16:33:24,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:33:24,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:33:24,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:33:24,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:33:24,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:33:24,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:33:24,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:33:24,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:33:24,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:33:24,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:33:24,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:33:24,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:33:24,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:33:24,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:33:24,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:33:24,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:33:24,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:33:24,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:33:24,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:33:24,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:33:24,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:33:24,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:33:24,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:33:24,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:33:24,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:33:24,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:33:24,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:33:24,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:33:24,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:33:24,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:33:24,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:33:24,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:33:24,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:33:24,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:33:24,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:33:24,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:33:24,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:33:24,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:33:24,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:33:24,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:33:24,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:33:24,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:33:24,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:33:24,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:33:24,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:33:24,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:33:24,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:33:24,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:33:24,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:33:24,527 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:33:24,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:33:24,528 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:33:24,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:33:24,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:33:24,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:33:24,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:33:24,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:33:24,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:33:24,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:33:24,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:33:24,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:33:24,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:33:24,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:33:24,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:33:24,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:33:24,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:33:24,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:33:24,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:33:24,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:33:24,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:33:24,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:33:24,533 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:33:24,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:33:24,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:33:24,534 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_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 [2022-11-21 16:33:24,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:33:24,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:33:24,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:33:24,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:33:24,895 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:33:24,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2022-11-21 16:33:28,199 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:33:28,432 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:33:28,433 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2022-11-21 16:33:28,441 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/data/fd8d3f2d0/8f4a431d07134607ba76983b381c9242/FLAG416dc219d [2022-11-21 16:33:28,459 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/data/fd8d3f2d0/8f4a431d07134607ba76983b381c9242 [2022-11-21 16:33:28,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:33:28,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:33:28,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:33:28,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:33:28,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:33:28,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1916d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28, skipping insertion in model container [2022-11-21 16:33:28,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:33:28,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:33:28,706 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2022-11-21 16:33:28,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:33:28,725 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:33:28,759 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2022-11-21 16:33:28,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:33:28,778 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:33:28,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28 WrapperNode [2022-11-21 16:33:28,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:33:28,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:33:28,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:33:28,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:33:28,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,827 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-11-21 16:33:28,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:33:28,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:33:28,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:33:28,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:33:28,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,861 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:33:28,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:33:28,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:33:28,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:33:28,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:33:28,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:28,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:33:28,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:33:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:33:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:33:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:33:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:33:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:33:28,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:33:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:33:28,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:33:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:33:28,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:33:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 16:33:28,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 16:33:28,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:33:28,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-21 16:33:28,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-21 16:33:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-21 16:33:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-21 16:33:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:33:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:33:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:33:28,994 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:33:29,160 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:33:29,162 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:33:29,616 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:33:29,633 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:33:29,633 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-21 16:33:29,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:33:29 BoogieIcfgContainer [2022-11-21 16:33:29,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:33:29,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:33:29,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:33:29,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:33:29,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:33:28" (1/3) ... [2022-11-21 16:33:29,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3634db08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:33:29, skipping insertion in model container [2022-11-21 16:33:29,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28" (2/3) ... [2022-11-21 16:33:29,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3634db08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:33:29, skipping insertion in model container [2022-11-21 16:33:29,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:33:29" (3/3) ... [2022-11-21 16:33:29,661 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2022-11-21 16:33:29,672 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:33:29,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:33:29,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:33:29,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:33:29,885 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-21 16:33:29,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2022-11-21 16:33:30,032 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2022-11-21 16:33:30,033 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 16:33:30,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-11-21 16:33:30,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2022-11-21 16:33:30,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 146 transitions, 328 flow [2022-11-21 16:33:30,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:33:30,067 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;@506f2d22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:33:30,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-21 16:33:30,128 INFO L130 PetriNetUnfolder]: 14/145 cut-off events. [2022-11-21 16:33:30,130 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 16:33:30,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:30,132 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:30,132 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 4 more)] === [2022-11-21 16:33:30,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:30,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1725329073, now seen corresponding path program 1 times [2022-11-21 16:33:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:30,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215803736] [2022-11-21 16:33:30,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:30,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:30,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215803736] [2022-11-21 16:33:30,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215803736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:30,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:30,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:33:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920002031] [2022-11-21 16:33:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:30,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:33:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:33:30,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:33:30,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 169 [2022-11-21 16:33:30,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:30,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:30,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 169 [2022-11-21 16:33:30,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:30,851 INFO L130 PetriNetUnfolder]: 6/138 cut-off events. [2022-11-21 16:33:30,852 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-21 16:33:30,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 138 events. 6/138 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 38/168 useless extension candidates. Maximal degree in co-relation 119. Up to 13 conditions per place. [2022-11-21 16:33:30,860 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 12 selfloop transitions, 0 changer transitions 2/138 dead transitions. [2022-11-21 16:33:30,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 138 transitions, 336 flow [2022-11-21 16:33:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:33:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:33:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 316 transitions. [2022-11-21 16:33:30,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9349112426035503 [2022-11-21 16:33:30,888 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 316 transitions. [2022-11-21 16:33:30,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 316 transitions. [2022-11-21 16:33:30,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:30,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 316 transitions. [2022-11-21 16:33:30,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 158.0) internal successors, (316), 2 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:30,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:30,913 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:30,916 INFO L175 Difference]: Start difference. First operand has 151 places, 146 transitions, 328 flow. Second operand 2 states and 316 transitions. [2022-11-21 16:33:30,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 138 transitions, 336 flow [2022-11-21 16:33:30,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 312 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-21 16:33:30,930 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 284 flow [2022-11-21 16:33:30,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2022-11-21 16:33:30,940 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -11 predicate places. [2022-11-21 16:33:30,940 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 284 flow [2022-11-21 16:33:30,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:30,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:30,942 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:30,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:33:30,942 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 4 more)] === [2022-11-21 16:33:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash -666427091, now seen corresponding path program 1 times [2022-11-21 16:33:30,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:30,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764007913] [2022-11-21 16:33:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:30,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:32,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:32,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764007913] [2022-11-21 16:33:32,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764007913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:32,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:32,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:33:32,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863126628] [2022-11-21 16:33:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:32,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:33:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:32,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:33:32,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:33:32,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 169 [2022-11-21 16:33:32,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:32,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:32,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 169 [2022-11-21 16:33:32,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:33,408 INFO L130 PetriNetUnfolder]: 187/575 cut-off events. [2022-11-21 16:33:33,409 INFO L131 PetriNetUnfolder]: For 16/22 co-relation queries the response was YES. [2022-11-21 16:33:33,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 575 events. 187/575 cut-off events. For 16/22 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2217 event pairs, 97 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 956. Up to 184 conditions per place. [2022-11-21 16:33:33,419 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 41 selfloop transitions, 5 changer transitions 4/156 dead transitions. [2022-11-21 16:33:33,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 156 transitions, 435 flow [2022-11-21 16:33:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:33:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:33:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2022-11-21 16:33:33,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8005071851225697 [2022-11-21 16:33:33,424 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2022-11-21 16:33:33,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2022-11-21 16:33:33,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:33,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2022-11-21 16:33:33,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:33,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:33,435 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:33,435 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 284 flow. Second operand 7 states and 947 transitions. [2022-11-21 16:33:33,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 156 transitions, 435 flow [2022-11-21 16:33:33,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 156 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:33:33,441 INFO L231 Difference]: Finished difference. Result has 147 places, 138 transitions, 311 flow [2022-11-21 16:33:33,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=147, PETRI_TRANSITIONS=138} [2022-11-21 16:33:33,442 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -4 predicate places. [2022-11-21 16:33:33,442 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 138 transitions, 311 flow [2022-11-21 16:33:33,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:33,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:33,444 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:33,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:33:33,445 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 4 more)] === [2022-11-21 16:33:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 971627543, now seen corresponding path program 1 times [2022-11-21 16:33:33,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:33,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207342310] [2022-11-21 16:33:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:33,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:34,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207342310] [2022-11-21 16:33:34,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207342310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:34,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:34,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:33:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417965321] [2022-11-21 16:33:34,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:33:34,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-21 16:33:34,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 138 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:34,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:34,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-21 16:33:34,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:39,409 INFO L130 PetriNetUnfolder]: 20438/28564 cut-off events. [2022-11-21 16:33:39,410 INFO L131 PetriNetUnfolder]: For 2929/3186 co-relation queries the response was YES. [2022-11-21 16:33:39,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58497 conditions, 28564 events. 20438/28564 cut-off events. For 2929/3186 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 168579 event pairs, 1500 based on Foata normal form. 2/20293 useless extension candidates. Maximal degree in co-relation 58490. Up to 19304 conditions per place. [2022-11-21 16:33:39,740 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 80 selfloop transitions, 17 changer transitions 7/188 dead transitions. [2022-11-21 16:33:39,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 188 transitions, 647 flow [2022-11-21 16:33:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:33:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:33:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2022-11-21 16:33:39,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7297830374753451 [2022-11-21 16:33:39,746 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2022-11-21 16:33:39,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2022-11-21 16:33:39,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:39,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2022-11-21 16:33:39,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:39,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:39,755 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:39,755 INFO L175 Difference]: Start difference. First operand has 147 places, 138 transitions, 311 flow. Second operand 6 states and 740 transitions. [2022-11-21 16:33:39,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 188 transitions, 647 flow [2022-11-21 16:33:39,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 188 transitions, 632 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-21 16:33:39,765 INFO L231 Difference]: Finished difference. Result has 147 places, 152 transitions, 407 flow [2022-11-21 16:33:39,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=147, PETRI_TRANSITIONS=152} [2022-11-21 16:33:39,767 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -4 predicate places. [2022-11-21 16:33:39,768 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 152 transitions, 407 flow [2022-11-21 16:33:39,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:39,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:39,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:39,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:33:39,770 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 4 more)] === [2022-11-21 16:33:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash -500549281, now seen corresponding path program 2 times [2022-11-21 16:33:39,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:39,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446685971] [2022-11-21 16:33:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:39,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:40,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:40,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446685971] [2022-11-21 16:33:40,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446685971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:40,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:40,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:33:40,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168542239] [2022-11-21 16:33:40,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:40,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:40,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:40,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:33:40,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-11-21 16:33:40,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 152 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:40,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:40,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-11-21 16:33:40,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:46,325 INFO L130 PetriNetUnfolder]: 21431/32394 cut-off events. [2022-11-21 16:33:46,325 INFO L131 PetriNetUnfolder]: For 14160/14391 co-relation queries the response was YES. [2022-11-21 16:33:46,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71766 conditions, 32394 events. 21431/32394 cut-off events. For 14160/14391 co-relation queries the response was YES. Maximal size of possible extension queue 1718. Compared 226030 event pairs, 11659 based on Foata normal form. 634/24757 useless extension candidates. Maximal degree in co-relation 71759. Up to 7077 conditions per place. [2022-11-21 16:33:46,745 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 96 selfloop transitions, 16 changer transitions 4/220 dead transitions. [2022-11-21 16:33:46,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 220 transitions, 828 flow [2022-11-21 16:33:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:33:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:33:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 937 transitions. [2022-11-21 16:33:46,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7920540997464074 [2022-11-21 16:33:46,749 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 937 transitions. [2022-11-21 16:33:46,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 937 transitions. [2022-11-21 16:33:46,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:46,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 937 transitions. [2022-11-21 16:33:46,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:46,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:46,758 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:46,758 INFO L175 Difference]: Start difference. First operand has 147 places, 152 transitions, 407 flow. Second operand 7 states and 937 transitions. [2022-11-21 16:33:46,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 220 transitions, 828 flow [2022-11-21 16:33:46,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 220 transitions, 824 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:33:46,783 INFO L231 Difference]: Finished difference. Result has 155 places, 156 transitions, 490 flow [2022-11-21 16:33:46,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=155, PETRI_TRANSITIONS=156} [2022-11-21 16:33:46,784 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 4 predicate places. [2022-11-21 16:33:46,785 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 156 transitions, 490 flow [2022-11-21 16:33:46,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:46,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:46,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:46,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:33:46,787 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 4 more)] === [2022-11-21 16:33:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:46,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1111030801, now seen corresponding path program 1 times [2022-11-21 16:33:46,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:46,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551078775] [2022-11-21 16:33:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:47,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:47,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551078775] [2022-11-21 16:33:47,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551078775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:47,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723320414] [2022-11-21 16:33:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:47,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:47,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:47,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:47,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:33:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:47,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:33:47,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:47,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:48,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723320414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:48,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:48,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-11-21 16:33:48,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313552771] [2022-11-21 16:33:48,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:48,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:33:48,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:33:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:33:48,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-11-21 16:33:48,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 156 transitions, 490 flow. Second operand has 9 states, 9 states have (on average 122.44444444444444) internal successors, (1102), 9 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:48,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:48,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-11-21 16:33:48,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:53,710 INFO L130 PetriNetUnfolder]: 24127/35325 cut-off events. [2022-11-21 16:33:53,710 INFO L131 PetriNetUnfolder]: For 28880/29208 co-relation queries the response was YES. [2022-11-21 16:33:53,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92671 conditions, 35325 events. 24127/35325 cut-off events. For 28880/29208 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 242073 event pairs, 6298 based on Foata normal form. 748/26883 useless extension candidates. Maximal degree in co-relation 92660. Up to 9139 conditions per place. [2022-11-21 16:33:54,183 INFO L137 encePairwiseOnDemand]: 155/169 looper letters, 109 selfloop transitions, 18 changer transitions 4/235 dead transitions. [2022-11-21 16:33:54,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 235 transitions, 990 flow [2022-11-21 16:33:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:33:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:33:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1424 transitions. [2022-11-21 16:33:54,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.766003227541689 [2022-11-21 16:33:54,190 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1424 transitions. [2022-11-21 16:33:54,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1424 transitions. [2022-11-21 16:33:54,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:54,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1424 transitions. [2022-11-21 16:33:54,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.45454545454547) internal successors, (1424), 11 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:54,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:54,203 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:54,203 INFO L175 Difference]: Start difference. First operand has 155 places, 156 transitions, 490 flow. Second operand 11 states and 1424 transitions. [2022-11-21 16:33:54,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 235 transitions, 990 flow [2022-11-21 16:33:54,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 235 transitions, 984 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-21 16:33:54,963 INFO L231 Difference]: Finished difference. Result has 169 places, 161 transitions, 582 flow [2022-11-21 16:33:54,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=582, PETRI_PLACES=169, PETRI_TRANSITIONS=161} [2022-11-21 16:33:54,965 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 18 predicate places. [2022-11-21 16:33:54,965 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 161 transitions, 582 flow [2022-11-21 16:33:54,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.44444444444444) internal successors, (1102), 9 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:54,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:54,966 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:54,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:55,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:55,181 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 4 more)] === [2022-11-21 16:33:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1629072213, now seen corresponding path program 1 times [2022-11-21 16:33:55,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:55,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374231383] [2022-11-21 16:33:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:33:56,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:56,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374231383] [2022-11-21 16:33:56,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374231383] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:56,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416672386] [2022-11-21 16:33:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:56,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:56,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:56,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:56,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:33:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:56,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:33:56,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:33:56,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:33:56,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416672386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:56,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:56,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-21 16:33:56,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438105163] [2022-11-21 16:33:56,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:56,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:33:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:33:56,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:33:56,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-21 16:33:56,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 161 transitions, 582 flow. Second operand has 13 states, 13 states have (on average 111.46153846153847) internal successors, (1449), 13 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:56,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:56,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-21 16:33:56,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:11,030 INFO L130 PetriNetUnfolder]: 67445/100185 cut-off events. [2022-11-21 16:34:11,031 INFO L131 PetriNetUnfolder]: For 224941/225128 co-relation queries the response was YES. [2022-11-21 16:34:11,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290858 conditions, 100185 events. 67445/100185 cut-off events. For 224941/225128 co-relation queries the response was YES. Maximal size of possible extension queue 4453. Compared 770762 event pairs, 18081 based on Foata normal form. 1/78920 useless extension candidates. Maximal degree in co-relation 290841. Up to 22784 conditions per place. [2022-11-21 16:34:12,008 INFO L137 encePairwiseOnDemand]: 150/169 looper letters, 218 selfloop transitions, 44 changer transitions 11/357 dead transitions. [2022-11-21 16:34:12,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 357 transitions, 2284 flow [2022-11-21 16:34:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:34:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:34:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1902 transitions. [2022-11-21 16:34:12,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7034023668639053 [2022-11-21 16:34:12,016 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1902 transitions. [2022-11-21 16:34:12,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1902 transitions. [2022-11-21 16:34:12,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:12,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1902 transitions. [2022-11-21 16:34:12,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.875) internal successors, (1902), 16 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:12,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 169.0) internal successors, (2873), 17 states have internal predecessors, (2873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:12,031 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 169.0) internal successors, (2873), 17 states have internal predecessors, (2873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:12,031 INFO L175 Difference]: Start difference. First operand has 169 places, 161 transitions, 582 flow. Second operand 16 states and 1902 transitions. [2022-11-21 16:34:12,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 357 transitions, 2284 flow [2022-11-21 16:34:14,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 357 transitions, 2225 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-21 16:34:14,389 INFO L231 Difference]: Finished difference. Result has 188 places, 189 transitions, 898 flow [2022-11-21 16:34:14,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=898, PETRI_PLACES=188, PETRI_TRANSITIONS=189} [2022-11-21 16:34:14,391 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 37 predicate places. [2022-11-21 16:34:14,391 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 189 transitions, 898 flow [2022-11-21 16:34:14,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.46153846153847) internal successors, (1449), 13 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:14,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:14,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:14,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:34:14,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e7e966-2c64-4885-ab7b-fb8567b39682/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:14,600 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 4 more)] === [2022-11-21 16:34:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1176408093, now seen corresponding path program 1 times [2022-11-21 16:34:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750140803] [2022-11-21 16:34:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:34:15,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:15,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750140803] [2022-11-21 16:34:15,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750140803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:15,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:15,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:34:15,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492574223] [2022-11-21 16:34:15,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:15,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:34:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:34:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:34:15,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-21 16:34:15,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 189 transitions, 898 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:15,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:15,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-21 16:34:15,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:29,992 INFO L130 PetriNetUnfolder]: 67256/98721 cut-off events. [2022-11-21 16:34:29,993 INFO L131 PetriNetUnfolder]: For 340189/340501 co-relation queries the response was YES. [2022-11-21 16:34:30,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350691 conditions, 98721 events. 67256/98721 cut-off events. For 340189/340501 co-relation queries the response was YES. Maximal size of possible extension queue 4655. Compared 752417 event pairs, 31720 based on Foata normal form. 1/86031 useless extension candidates. Maximal degree in co-relation 350666. Up to 79055 conditions per place.