./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/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_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/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_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --- 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 16:21:12,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:21:12,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:21:12,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:21:12,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:21:12,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:21:12,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:21:12,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:21:12,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:21:12,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:21:12,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:21:12,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:21:12,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:21:12,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:21:12,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:21:12,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:21:12,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:21:12,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:21:12,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:21:12,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:21:12,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:21:12,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:21:12,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:21:12,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:21:12,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:21:12,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:21:12,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:21:12,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:21:12,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:21:12,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:21:12,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:21:12,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:21:12,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:21:12,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:21:12,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:21:12,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:21:12,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:21:12,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:21:12,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:21:12,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:21:12,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:21:12,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:21:12,907 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:21:12,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:21:12,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:21:12,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:21:12,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:21:12,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:21:12,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:21:12,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:21:12,913 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:21:12,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:21:12,914 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:21:12,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:21:12,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:21:12,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:21:12,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:21:12,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:21:12,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:21:12,916 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:21:12,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:21:12,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:21:12,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:21:12,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:21:12,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:21:12,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:21:12,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:21:12,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:21:12,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:21:12,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:21:12,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:21:12,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:21:12,919 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:21:12,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:21:12,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:21:12,920 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_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2022-11-21 16:21:13,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:21:13,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:21:13,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:21:13,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:21:13,229 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:21:13,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-11-21 16:21:16,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:21:16,507 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:21:16,508 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-11-21 16:21:16,516 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/data/66420b3ee/d7adc41878c447dd9613239beeb38dad/FLAGb79b0400b [2022-11-21 16:21:16,531 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/data/66420b3ee/d7adc41878c447dd9613239beeb38dad [2022-11-21 16:21:16,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:21:16,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:21:16,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:21:16,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:21:16,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:21:16,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1737162d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16, skipping insertion in model container [2022-11-21 16:21:16,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:21:16,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:21:16,789 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_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-11-21 16:21:16,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:21:16,809 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:21:16,849 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_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-11-21 16:21:16,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:21:16,866 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:21:16,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16 WrapperNode [2022-11-21 16:21:16,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:21:16,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:21:16,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:21:16,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:21:16,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,912 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2022-11-21 16:21:16,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:21:16,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:21:16,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:21:16,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:21:16,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:21:16,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:21:16,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:21:16,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:21:16,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (1/1) ... [2022-11-21 16:21:16,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:21:16,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:17,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:21:17,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:21:17,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:21:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:21:17,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:21:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:21:17,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:21:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:21:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:21:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:21:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:21:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:21:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:21:17,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:21:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:21:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:21:17,062 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 16:21:17,195 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:21:17,197 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:21:17,469 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:21:17,557 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:21:17,557 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:21:17,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:21:17 BoogieIcfgContainer [2022-11-21 16:21:17,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:21:17,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:21:17,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:21:17,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:21:17,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:21:16" (1/3) ... [2022-11-21 16:21:17,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a3a747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:21:17, skipping insertion in model container [2022-11-21 16:21:17,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:16" (2/3) ... [2022-11-21 16:21:17,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a3a747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:21:17, skipping insertion in model container [2022-11-21 16:21:17,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:21:17" (3/3) ... [2022-11-21 16:21:17,576 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-11-21 16:21:17,586 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:21:17,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:21:17,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:21:17,601 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:21:17,655 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:21:17,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 182 flow [2022-11-21 16:21:17,789 INFO L130 PetriNetUnfolder]: 1/81 cut-off events. [2022-11-21 16:21:17,789 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:21:17,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 1/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-11-21 16:21:17,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 83 transitions, 182 flow [2022-11-21 16:21:17,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 72 transitions, 156 flow [2022-11-21 16:21:17,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:21:17,813 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;@706778a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:21:17,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 16:21:17,843 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-11-21 16:21:17,843 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:21:17,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:17,844 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] [2022-11-21 16:21:17,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:21:17,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1443793135, now seen corresponding path program 1 times [2022-11-21 16:21:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:17,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274518872] [2022-11-21 16:21:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:18,920 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 16:21:18,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:18,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274518872] [2022-11-21 16:21:18,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274518872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:18,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:18,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:21:18,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111910807] [2022-11-21 16:21:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:18,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:21:18,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:18,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:21:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:21:18,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-11-21 16:21:18,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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 16:21:18,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:18,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-11-21 16:21:18,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:19,446 INFO L130 PetriNetUnfolder]: 22/202 cut-off events. [2022-11-21 16:21:19,447 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-21 16:21:19,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 202 events. 22/202 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 716 event pairs, 12 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 186. Up to 33 conditions per place. [2022-11-21 16:21:19,450 INFO L137 encePairwiseOnDemand]: 72/83 looper letters, 31 selfloop transitions, 7 changer transitions 13/102 dead transitions. [2022-11-21 16:21:19,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 102 transitions, 339 flow [2022-11-21 16:21:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:21:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:21:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2022-11-21 16:21:19,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7868396663577386 [2022-11-21 16:21:19,476 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2022-11-21 16:21:19,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2022-11-21 16:21:19,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:19,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2022-11-21 16:21:19,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 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 16:21:19,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:21:19,498 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:21:19,504 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 156 flow. Second operand 13 states and 849 transitions. [2022-11-21 16:21:19,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 102 transitions, 339 flow [2022-11-21 16:21:19,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 317 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:21:19,515 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 185 flow [2022-11-21 16:21:19,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=185, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2022-11-21 16:21:19,524 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2022-11-21 16:21:19,524 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 185 flow [2022-11-21 16:21:19,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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 16:21:19,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:19,526 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] [2022-11-21 16:21:19,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:21:19,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:21:19,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash -983860785, now seen corresponding path program 2 times [2022-11-21 16:21:19,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:19,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896630454] [2022-11-21 16:21:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:19,885 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 16:21:19,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:19,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896630454] [2022-11-21 16:21:19,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896630454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:19,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:19,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:21:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40291307] [2022-11-21 16:21:19,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:19,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:21:19,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:21:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:21:19,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-11-21 16:21:19,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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 16:21:19,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:19,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-11-21 16:21:19,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:20,178 INFO L130 PetriNetUnfolder]: 64/401 cut-off events. [2022-11-21 16:21:20,179 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-21 16:21:20,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 401 events. 64/401 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2111 event pairs, 7 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 628. Up to 36 conditions per place. [2022-11-21 16:21:20,183 INFO L137 encePairwiseOnDemand]: 74/83 looper letters, 30 selfloop transitions, 12 changer transitions 9/107 dead transitions. [2022-11-21 16:21:20,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 357 flow [2022-11-21 16:21:20,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:21:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 619 transitions. [2022-11-21 16:21:20,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8286479250334672 [2022-11-21 16:21:20,186 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 619 transitions. [2022-11-21 16:21:20,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 619 transitions. [2022-11-21 16:21:20,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:20,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 619 transitions. [2022-11-21 16:21:20,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.77777777777777) internal successors, (619), 9 states have internal predecessors, (619), 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 16:21:20,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:21:20,192 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:21:20,193 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 185 flow. Second operand 9 states and 619 transitions. [2022-11-21 16:21:20,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 357 flow [2022-11-21 16:21:20,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 107 transitions, 349 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-21 16:21:20,198 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 253 flow [2022-11-21 16:21:20,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=253, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2022-11-21 16:21:20,199 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2022-11-21 16:21:20,199 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 253 flow [2022-11-21 16:21:20,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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 16:21:20,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:20,200 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] [2022-11-21 16:21:20,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:21:20,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:21:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1882694881, now seen corresponding path program 3 times [2022-11-21 16:21:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:20,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546904990] [2022-11-21 16:21:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:20,480 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 16:21:20,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:20,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546904990] [2022-11-21 16:21:20,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546904990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:20,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:20,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:21:20,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184209038] [2022-11-21 16:21:20,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:20,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:21:20,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:21:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:21:20,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-11-21 16:21:20,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 253 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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 16:21:20,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:20,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-11-21 16:21:20,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:20,722 INFO L130 PetriNetUnfolder]: 53/356 cut-off events. [2022-11-21 16:21:20,722 INFO L131 PetriNetUnfolder]: For 153/155 co-relation queries the response was YES. [2022-11-21 16:21:20,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 356 events. 53/356 cut-off events. For 153/155 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1833 event pairs, 25 based on Foata normal form. 3/353 useless extension candidates. Maximal degree in co-relation 618. Up to 64 conditions per place. [2022-11-21 16:21:20,728 INFO L137 encePairwiseOnDemand]: 75/83 looper letters, 21 selfloop transitions, 6 changer transitions 13/99 dead transitions. [2022-11-21 16:21:20,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 375 flow [2022-11-21 16:21:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:21:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:21:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 651 transitions. [2022-11-21 16:21:20,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7843373493975904 [2022-11-21 16:21:20,732 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 651 transitions. [2022-11-21 16:21:20,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 651 transitions. [2022-11-21 16:21:20,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:20,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 651 transitions. [2022-11-21 16:21:20,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 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 16:21:20,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 16:21:20,738 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 16:21:20,739 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 253 flow. Second operand 10 states and 651 transitions. [2022-11-21 16:21:20,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 375 flow [2022-11-21 16:21:20,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 370 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-21 16:21:20,749 INFO L231 Difference]: Finished difference. Result has 101 places, 80 transitions, 257 flow [2022-11-21 16:21:20,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=257, PETRI_PLACES=101, PETRI_TRANSITIONS=80} [2022-11-21 16:21:20,752 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2022-11-21 16:21:20,752 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 80 transitions, 257 flow [2022-11-21 16:21:20,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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 16:21:20,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:20,753 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] [2022-11-21 16:21:20,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:21:20,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:21:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1319518781, now seen corresponding path program 4 times [2022-11-21 16:21:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:20,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185914420] [2022-11-21 16:21:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:20,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:21,051 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 16:21:21,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:21,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185914420] [2022-11-21 16:21:21,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185914420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:21,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:21,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:21:21,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347192197] [2022-11-21 16:21:21,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:21,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:21:21,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:21:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:21:21,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-11-21 16:21:21,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 80 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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 16:21:21,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:21,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-11-21 16:21:21,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:21,313 INFO L130 PetriNetUnfolder]: 51/372 cut-off events. [2022-11-21 16:21:21,313 INFO L131 PetriNetUnfolder]: For 260/274 co-relation queries the response was YES. [2022-11-21 16:21:21,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 372 events. 51/372 cut-off events. For 260/274 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1962 event pairs, 5 based on Foata normal form. 17/385 useless extension candidates. Maximal degree in co-relation 736. Up to 31 conditions per place. [2022-11-21 16:21:21,316 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 28 selfloop transitions, 14 changer transitions 12/108 dead transitions. [2022-11-21 16:21:21,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 464 flow [2022-11-21 16:21:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:21:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:21:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 684 transitions. [2022-11-21 16:21:21,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8240963855421687 [2022-11-21 16:21:21,320 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 684 transitions. [2022-11-21 16:21:21,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 684 transitions. [2022-11-21 16:21:21,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:21,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 684 transitions. [2022-11-21 16:21:21,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 68.4) internal successors, (684), 10 states have internal predecessors, (684), 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 16:21:21,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 16:21:21,329 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 16:21:21,329 INFO L175 Difference]: Start difference. First operand has 101 places, 80 transitions, 257 flow. Second operand 10 states and 684 transitions. [2022-11-21 16:21:21,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 464 flow [2022-11-21 16:21:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 445 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-21 16:21:21,337 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 276 flow [2022-11-21 16:21:21,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2022-11-21 16:21:21,339 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2022-11-21 16:21:21,339 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 276 flow [2022-11-21 16:21:21,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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 16:21:21,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:21,340 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] [2022-11-21 16:21:21,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:21:21,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:21:21,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1109183523, now seen corresponding path program 5 times [2022-11-21 16:21:21,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:21,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421449173] [2022-11-21 16:21:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:21,535 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 16:21:21,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:21,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421449173] [2022-11-21 16:21:21,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421449173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:21,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:21,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:21:21,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686033324] [2022-11-21 16:21:21,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:21,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:21:21,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:21,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:21:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:21:21,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-11-21 16:21:21,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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 16:21:21,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:21,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-11-21 16:21:21,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:21,690 INFO L130 PetriNetUnfolder]: 38/231 cut-off events. [2022-11-21 16:21:21,690 INFO L131 PetriNetUnfolder]: For 228/238 co-relation queries the response was YES. [2022-11-21 16:21:21,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 231 events. 38/231 cut-off events. For 228/238 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 883 event pairs, 7 based on Foata normal form. 13/240 useless extension candidates. Maximal degree in co-relation 457. Up to 31 conditions per place. [2022-11-21 16:21:21,692 INFO L137 encePairwiseOnDemand]: 75/83 looper letters, 15 selfloop transitions, 8 changer transitions 14/91 dead transitions. [2022-11-21 16:21:21,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 91 transitions, 373 flow [2022-11-21 16:21:21,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:21:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 604 transitions. [2022-11-21 16:21:21,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8085676037483266 [2022-11-21 16:21:21,695 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 604 transitions. [2022-11-21 16:21:21,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 604 transitions. [2022-11-21 16:21:21,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:21,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 604 transitions. [2022-11-21 16:21:21,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 16:21:21,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:21:21,699 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:21:21,700 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 276 flow. Second operand 9 states and 604 transitions. [2022-11-21 16:21:21,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 91 transitions, 373 flow [2022-11-21 16:21:21,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 320 flow, removed 7 selfloop flow, removed 13 redundant places. [2022-11-21 16:21:21,704 INFO L231 Difference]: Finished difference. Result has 94 places, 74 transitions, 211 flow [2022-11-21 16:21:21,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=211, PETRI_PLACES=94, PETRI_TRANSITIONS=74} [2022-11-21 16:21:21,705 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2022-11-21 16:21:21,705 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 211 flow [2022-11-21 16:21:21,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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 16:21:21,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:21,706 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] [2022-11-21 16:21:21,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:21:21,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:21:21,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:21,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1539327261, now seen corresponding path program 6 times [2022-11-21 16:21:21,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:21,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880318795] [2022-11-21 16:21:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:21,808 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 16:21:21,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880318795] [2022-11-21 16:21:21,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880318795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:21,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:21,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:21:21,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665656275] [2022-11-21 16:21:21,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:21,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:21:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:21:21,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:21:21,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2022-11-21 16:21:21,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 74 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 16:21:21,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:21,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2022-11-21 16:21:21,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:21,847 INFO L130 PetriNetUnfolder]: 9/141 cut-off events. [2022-11-21 16:21:21,847 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-21 16:21:21,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 141 events. 9/141 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 6 based on Foata normal form. 1/140 useless extension candidates. Maximal degree in co-relation 147. Up to 26 conditions per place. [2022-11-21 16:21:21,848 INFO L137 encePairwiseOnDemand]: 80/83 looper letters, 10 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-11-21 16:21:21,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 238 flow [2022-11-21 16:21:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:21:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:21:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2022-11-21 16:21:21,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8955823293172691 [2022-11-21 16:21:21,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2022-11-21 16:21:21,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2022-11-21 16:21:21,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:21,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2022-11-21 16:21:21,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 16:21:21,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 16:21:21,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 16:21:21,853 INFO L175 Difference]: Start difference. First operand has 94 places, 74 transitions, 211 flow. Second operand 3 states and 223 transitions. [2022-11-21 16:21:21,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 238 flow [2022-11-21 16:21:21,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 211 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-21 16:21:21,855 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 192 flow [2022-11-21 16:21:21,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2022-11-21 16:21:21,857 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2022-11-21 16:21:21,857 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 192 flow [2022-11-21 16:21:21,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 16:21:21,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:21,858 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] [2022-11-21 16:21:21,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:21:21,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:21:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1141376561, now seen corresponding path program 7 times [2022-11-21 16:21:21,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:21,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737575869] [2022-11-21 16:21:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:21,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:22,065 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 16:21:22,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:22,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737575869] [2022-11-21 16:21:22,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737575869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:22,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:22,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:21:22,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404609305] [2022-11-21 16:21:22,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:22,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:21:22,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:22,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:21:22,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:21:22,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-11-21 16:21:22,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 192 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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 16:21:22,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:22,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-11-21 16:21:22,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:22,188 INFO L130 PetriNetUnfolder]: 7/80 cut-off events. [2022-11-21 16:21:22,188 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-21 16:21:22,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 80 events. 7/80 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 3 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 99. Up to 10 conditions per place. [2022-11-21 16:21:22,189 INFO L137 encePairwiseOnDemand]: 75/83 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2022-11-21 16:21:22,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 59 transitions, 183 flow [2022-11-21 16:21:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:21:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:21:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 524 transitions. [2022-11-21 16:21:22,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7891566265060241 [2022-11-21 16:21:22,192 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 524 transitions. [2022-11-21 16:21:22,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 524 transitions. [2022-11-21 16:21:22,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:22,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 524 transitions. [2022-11-21 16:21:22,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.5) internal successors, (524), 8 states have internal predecessors, (524), 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 16:21:22,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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 16:21:22,196 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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 16:21:22,196 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 192 flow. Second operand 8 states and 524 transitions. [2022-11-21 16:21:22,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 59 transitions, 183 flow [2022-11-21 16:21:22,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 172 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-21 16:21:22,197 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2022-11-21 16:21:22,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2022-11-21 16:21:22,198 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, -8 predicate places. [2022-11-21 16:21:22,198 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2022-11-21 16:21:22,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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 16:21:22,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-21 16:21:22,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-21 16:21:22,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-21 16:21:22,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:21:22,203 INFO L444 BasicCegarLoop]: Path program histogram: [7] [2022-11-21 16:21:22,206 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:21:22,206 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:21:22,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:21:22 BasicIcfg [2022-11-21 16:21:22,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:21:22,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:21:22,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:21:22,212 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:21:22,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:21:17" (3/4) ... [2022-11-21 16:21:22,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:21:22,221 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 16:21:22,221 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 16:21:22,225 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-21 16:21:22,225 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 16:21:22,226 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:21:22,226 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:21:22,257 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:21:22,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:21:22,258 INFO L158 Benchmark]: Toolchain (without parser) took 5722.60ms. Allocated memory was 161.5MB in the beginning and 213.9MB in the end (delta: 52.4MB). Free memory was 131.7MB in the beginning and 170.3MB in the end (delta: -38.7MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-11-21 16:21:22,259 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:21:22,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.73ms. Allocated memory is still 161.5MB. Free memory was 131.7MB in the beginning and 120.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:21:22,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.15ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 118.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:21:22,260 INFO L158 Benchmark]: Boogie Preprocessor took 44.61ms. Allocated memory is still 161.5MB. Free memory was 118.8MB in the beginning and 117.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:21:22,260 INFO L158 Benchmark]: RCFGBuilder took 599.36ms. Allocated memory is still 161.5MB. Free memory was 117.6MB in the beginning and 101.1MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-21 16:21:22,260 INFO L158 Benchmark]: TraceAbstraction took 4648.24ms. Allocated memory was 161.5MB in the beginning and 213.9MB in the end (delta: 52.4MB). Free memory was 100.2MB in the beginning and 173.5MB in the end (delta: -73.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:21:22,261 INFO L158 Benchmark]: Witness Printer took 45.93ms. Allocated memory is still 213.9MB. Free memory was 173.5MB in the beginning and 170.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:21:22,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.73ms. Allocated memory is still 161.5MB. Free memory was 131.7MB in the beginning and 120.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.15ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 118.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.61ms. Allocated memory is still 161.5MB. Free memory was 118.8MB in the beginning and 117.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 599.36ms. Allocated memory is still 161.5MB. Free memory was 117.6MB in the beginning and 101.1MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4648.24ms. Allocated memory was 161.5MB in the beginning and 213.9MB in the end (delta: 52.4MB). Free memory was 100.2MB in the beginning and 173.5MB in the end (delta: -73.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 45.93ms. Allocated memory is still 213.9MB. Free memory was 173.5MB in the beginning and 170.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 116]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 109 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 146 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 714 IncrementalHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 58 mSDtfsCounter, 714 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=4, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 1525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:21:22,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c5a5f1-8e56-4a72-87f4-1ecfd9a80028/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE