./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe026_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe026_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc --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 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d --- 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-5e519f3 [2022-11-02 20:57:12,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:57:12,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:57:12,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:57:12,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:57:12,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:57:12,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:57:12,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:57:12,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:57:12,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:57:12,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:57:12,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:57:12,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:57:12,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:57:12,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:57:12,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:57:12,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:57:12,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:57:12,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:57:12,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:57:12,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:57:12,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:57:12,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:57:12,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:57:12,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:57:12,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:57:12,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:57:12,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:57:12,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:57:12,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:57:12,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:57:12,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:57:12,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:57:12,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:57:12,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:57:12,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:57:12,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:57:12,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:57:12,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:57:12,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:57:12,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:57:12,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:57:12,896 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:57:12,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:57:12,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:57:12,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:57:12,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:57:12,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:57:12,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:57:12,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:57:12,899 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:57:12,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:57:12,900 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:57:12,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:57:12,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:57:12,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:57:12,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:57:12,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:57:12,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:57:12,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:57:12,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:57:12,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:57:12,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:57:12,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:57:12,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:57:12,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:57:12,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:12,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:57:12,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:57:12,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:57:12,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:57:12,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:57:12,906 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:57:12,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:57:12,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:57:12,906 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_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d [2022-11-02 20:57:13,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:57:13,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:57:13,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:57:13,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:57:13,246 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:57:13,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/safe026_tso.i [2022-11-02 20:57:13,328 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/data/9efb217cc/3779e8cd70bb46f5a478863ba76be953/FLAGa5ee70800 [2022-11-02 20:57:13,920 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:57:13,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/sv-benchmarks/c/pthread-wmm/safe026_tso.i [2022-11-02 20:57:13,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/data/9efb217cc/3779e8cd70bb46f5a478863ba76be953/FLAGa5ee70800 [2022-11-02 20:57:14,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/data/9efb217cc/3779e8cd70bb46f5a478863ba76be953 [2022-11-02 20:57:14,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:57:14,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:57:14,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:14,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:57:14,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:57:14,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3818ff14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14, skipping insertion in model container [2022-11-02 20:57:14,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:57:14,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:57:14,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2022-11-02 20:57:14,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:14,706 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:57:14,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2022-11-02 20:57:14,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:14,818 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:57:14,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14 WrapperNode [2022-11-02 20:57:14,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:14,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:14,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:57:14,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:57:14,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,861 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-02 20:57:14,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:14,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:57:14,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:57:14,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:57:14,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:57:14,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:57:14,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:57:14,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:57:14,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (1/1) ... [2022-11-02 20:57:14,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:14,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:14,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:14,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:57:14,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:57:14,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:57:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:57:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:57:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:57:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:57:14,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:57:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:57:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:57:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:57:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:57:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:57:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:57:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:57:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:57:14,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:57:15,186 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:57:15,188 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:57:15,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:57:15,430 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:57:15,431 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:57:15,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:15 BoogieIcfgContainer [2022-11-02 20:57:15,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:57:15,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:57:15,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:57:15,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:57:15,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:57:14" (1/3) ... [2022-11-02 20:57:15,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fd00af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:15, skipping insertion in model container [2022-11-02 20:57:15,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:14" (2/3) ... [2022-11-02 20:57:15,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fd00af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:15, skipping insertion in model container [2022-11-02 20:57:15,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:15" (3/3) ... [2022-11-02 20:57:15,462 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2022-11-02 20:57:15,474 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:57:15,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:57:15,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:57:15,482 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:57:15,545 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:57:15,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-11-02 20:57:15,648 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2022-11-02 20:57:15,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:57:15,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-02 20:57:15,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-11-02 20:57:15,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-11-02 20:57:15,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:15,680 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;@2565293c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:15,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:57:15,737 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-02 20:57:15,737 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:57:15,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:15,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:15,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:57:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:15,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1419924202, now seen corresponding path program 1 times [2022-11-02 20:57:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:15,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780020823] [2022-11-02 20:57:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:15,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:16,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:16,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780020823] [2022-11-02 20:57:16,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780020823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:16,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:16,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:57:16,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631058570] [2022-11-02 20:57:16,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:16,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:57:16,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:16,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:57:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:57:16,809 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-11-02 20:57:16,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 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) [2022-11-02 20:57:16,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:16,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-11-02 20:57:16,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:17,258 INFO L130 PetriNetUnfolder]: 178/534 cut-off events. [2022-11-02 20:57:17,258 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:57:17,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 534 events. 178/534 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2921 event pairs, 26 based on Foata normal form. 19/531 useless extension candidates. Maximal degree in co-relation 845. Up to 117 conditions per place. [2022-11-02 20:57:17,264 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 19 selfloop transitions, 5 changer transitions 35/115 dead transitions. [2022-11-02 20:57:17,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 357 flow [2022-11-02 20:57:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:57:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:57:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 975 transitions. [2022-11-02 20:57:17,293 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-02 20:57:17,294 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 975 transitions. [2022-11-02 20:57:17,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 975 transitions. [2022-11-02 20:57:17,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:17,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 975 transitions. [2022-11-02 20:57:17,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 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) [2022-11-02 20:57:17,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-02 20:57:17,323 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-02 20:57:17,324 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 975 transitions. [2022-11-02 20:57:17,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 357 flow [2022-11-02 20:57:17,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:57:17,334 INFO L231 Difference]: Finished difference. Result has 103 places, 75 transitions, 222 flow [2022-11-02 20:57:17,337 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=103, PETRI_TRANSITIONS=75} [2022-11-02 20:57:17,341 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2022-11-02 20:57:17,342 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 75 transitions, 222 flow [2022-11-02 20:57:17,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 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) [2022-11-02 20:57:17,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:17,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:17,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:57:17,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:57:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash 273314153, now seen corresponding path program 1 times [2022-11-02 20:57:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:17,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359319239] [2022-11-02 20:57:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:17,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359319239] [2022-11-02 20:57:17,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359319239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:17,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:17,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:57:17,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777886531] [2022-11-02 20:57:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:17,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:57:17,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:17,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:57:17,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:57:17,752 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-11-02 20:57:17,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 75 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2022-11-02 20:57:17,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:17,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-11-02 20:57:17,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:18,157 INFO L130 PetriNetUnfolder]: 99/403 cut-off events. [2022-11-02 20:57:18,158 INFO L131 PetriNetUnfolder]: For 830/961 co-relation queries the response was YES. [2022-11-02 20:57:18,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 403 events. 99/403 cut-off events. For 830/961 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2068 event pairs, 10 based on Foata normal form. 12/404 useless extension candidates. Maximal degree in co-relation 1137. Up to 95 conditions per place. [2022-11-02 20:57:18,163 INFO L137 encePairwiseOnDemand]: 79/90 looper letters, 21 selfloop transitions, 12 changer transitions 34/123 dead transitions. [2022-11-02 20:57:18,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 704 flow [2022-11-02 20:57:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:57:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:57:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 977 transitions. [2022-11-02 20:57:18,166 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8350427350427351 [2022-11-02 20:57:18,166 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 977 transitions. [2022-11-02 20:57:18,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 977 transitions. [2022-11-02 20:57:18,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:18,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 977 transitions. [2022-11-02 20:57:18,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.15384615384616) internal successors, (977), 13 states have internal predecessors, (977), 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) [2022-11-02 20:57:18,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-02 20:57:18,173 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-02 20:57:18,173 INFO L175 Difference]: Start difference. First operand has 103 places, 75 transitions, 222 flow. Second operand 13 states and 977 transitions. [2022-11-02 20:57:18,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 704 flow [2022-11-02 20:57:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 652 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-02 20:57:18,181 INFO L231 Difference]: Finished difference. Result has 113 places, 80 transitions, 311 flow [2022-11-02 20:57:18,181 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=311, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2022-11-02 20:57:18,182 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 31 predicate places. [2022-11-02 20:57:18,182 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 311 flow [2022-11-02 20:57:18,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2022-11-02 20:57:18,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:18,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:18,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:57:18,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:57:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:18,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1950295604, now seen corresponding path program 1 times [2022-11-02 20:57:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:18,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23601400] [2022-11-02 20:57:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:18,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:18,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:18,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23601400] [2022-11-02 20:57:18,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23601400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:18,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:18,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:57:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422852858] [2022-11-02 20:57:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:57:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:57:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:57:18,479 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2022-11-02 20:57:18,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2022-11-02 20:57:18,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:18,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2022-11-02 20:57:18,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:18,663 INFO L130 PetriNetUnfolder]: 62/351 cut-off events. [2022-11-02 20:57:18,663 INFO L131 PetriNetUnfolder]: For 1082/1314 co-relation queries the response was YES. [2022-11-02 20:57:18,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 351 events. 62/351 cut-off events. For 1082/1314 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1947 event pairs, 24 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 1025. Up to 67 conditions per place. [2022-11-02 20:57:18,668 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 15 selfloop transitions, 6 changer transitions 15/95 dead transitions. [2022-11-02 20:57:18,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 95 transitions, 512 flow [2022-11-02 20:57:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:57:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:57:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-11-02 20:57:18,671 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8507936507936508 [2022-11-02 20:57:18,671 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-11-02 20:57:18,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-11-02 20:57:18,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:18,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-11-02 20:57:18,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2022-11-02 20:57:18,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2022-11-02 20:57:18,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2022-11-02 20:57:18,675 INFO L175 Difference]: Start difference. First operand has 113 places, 80 transitions, 311 flow. Second operand 7 states and 536 transitions. [2022-11-02 20:57:18,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 95 transitions, 512 flow [2022-11-02 20:57:18,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 470 flow, removed 21 selfloop flow, removed 12 redundant places. [2022-11-02 20:57:18,683 INFO L231 Difference]: Finished difference. Result has 102 places, 78 transitions, 288 flow [2022-11-02 20:57:18,683 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=288, PETRI_PLACES=102, PETRI_TRANSITIONS=78} [2022-11-02 20:57:18,684 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2022-11-02 20:57:18,684 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 78 transitions, 288 flow [2022-11-02 20:57:18,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2022-11-02 20:57:18,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:18,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:57:18,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:57:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2084962614, now seen corresponding path program 2 times [2022-11-02 20:57:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027964512] [2022-11-02 20:57:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:18,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:18,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:18,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027964512] [2022-11-02 20:57:18,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027964512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:18,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:18,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:57:18,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865151020] [2022-11-02 20:57:18,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:18,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:57:18,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:57:18,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:57:18,913 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:57:18,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 78 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2022-11-02 20:57:18,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:18,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:57:18,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:19,188 INFO L130 PetriNetUnfolder]: 374/995 cut-off events. [2022-11-02 20:57:19,189 INFO L131 PetriNetUnfolder]: For 624/644 co-relation queries the response was YES. [2022-11-02 20:57:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 995 events. 374/995 cut-off events. For 624/644 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6988 event pairs, 26 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 2089. Up to 246 conditions per place. [2022-11-02 20:57:19,199 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 29 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2022-11-02 20:57:19,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 448 flow [2022-11-02 20:57:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:57:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:57:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-11-02 20:57:19,202 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2022-11-02 20:57:19,203 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-11-02 20:57:19,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-11-02 20:57:19,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:19,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-11-02 20:57:19,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 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) [2022-11-02 20:57:19,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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) [2022-11-02 20:57:19,208 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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) [2022-11-02 20:57:19,208 INFO L175 Difference]: Start difference. First operand has 102 places, 78 transitions, 288 flow. Second operand 10 states and 778 transitions. [2022-11-02 20:57:19,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 448 flow [2022-11-02 20:57:19,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 110 transitions, 413 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-02 20:57:19,213 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 373 flow [2022-11-02 20:57:19,213 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=373, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2022-11-02 20:57:19,214 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2022-11-02 20:57:19,214 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 373 flow [2022-11-02 20:57:19,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2022-11-02 20:57:19,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:19,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:19,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:57:19,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:57:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:19,216 INFO L85 PathProgramCache]: Analyzing trace with hash 243950234, now seen corresponding path program 1 times [2022-11-02 20:57:19,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:19,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831561857] [2022-11-02 20:57:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:19,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:19,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831561857] [2022-11-02 20:57:19,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831561857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:19,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:19,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:57:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543456249] [2022-11-02 20:57:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:19,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:57:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:57:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:57:19,407 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:57:19,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 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) [2022-11-02 20:57:19,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:19,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:57:19,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:19,747 INFO L130 PetriNetUnfolder]: 332/917 cut-off events. [2022-11-02 20:57:19,747 INFO L131 PetriNetUnfolder]: For 2154/2284 co-relation queries the response was YES. [2022-11-02 20:57:19,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 917 events. 332/917 cut-off events. For 2154/2284 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6663 event pairs, 4 based on Foata normal form. 56/909 useless extension candidates. Maximal degree in co-relation 3036. Up to 338 conditions per place. [2022-11-02 20:57:19,756 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 32 changer transitions 9/131 dead transitions. [2022-11-02 20:57:19,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 131 transitions, 743 flow [2022-11-02 20:57:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:57:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:57:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1012 transitions. [2022-11-02 20:57:19,760 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.864957264957265 [2022-11-02 20:57:19,760 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1012 transitions. [2022-11-02 20:57:19,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1012 transitions. [2022-11-02 20:57:19,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:19,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1012 transitions. [2022-11-02 20:57:19,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.84615384615384) internal successors, (1012), 13 states have internal predecessors, (1012), 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) [2022-11-02 20:57:19,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-02 20:57:19,766 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-02 20:57:19,767 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 373 flow. Second operand 13 states and 1012 transitions. [2022-11-02 20:57:19,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 131 transitions, 743 flow [2022-11-02 20:57:19,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 131 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:57:19,775 INFO L231 Difference]: Finished difference. Result has 122 places, 113 transitions, 614 flow [2022-11-02 20:57:19,775 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=614, PETRI_PLACES=122, PETRI_TRANSITIONS=113} [2022-11-02 20:57:19,776 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 40 predicate places. [2022-11-02 20:57:19,776 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 113 transitions, 614 flow [2022-11-02 20:57:19,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 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) [2022-11-02 20:57:19,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:19,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:19,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:57:19,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:57:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:19,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1857817141, now seen corresponding path program 1 times [2022-11-02 20:57:19,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:19,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739963132] [2022-11-02 20:57:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:19,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:19,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:19,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739963132] [2022-11-02 20:57:19,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739963132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:19,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:19,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:57:19,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011256048] [2022-11-02 20:57:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:19,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:57:19,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:57:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:57:19,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:57:19,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 113 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2022-11-02 20:57:19,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:19,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:57:19,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:20,413 INFO L130 PetriNetUnfolder]: 259/796 cut-off events. [2022-11-02 20:57:20,414 INFO L131 PetriNetUnfolder]: For 3202/3374 co-relation queries the response was YES. [2022-11-02 20:57:20,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 796 events. 259/796 cut-off events. For 3202/3374 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6054 event pairs, 0 based on Foata normal form. 61/796 useless extension candidates. Maximal degree in co-relation 3165. Up to 269 conditions per place. [2022-11-02 20:57:20,423 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 22 selfloop transitions, 36 changer transitions 20/142 dead transitions. [2022-11-02 20:57:20,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 956 flow [2022-11-02 20:57:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:57:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:57:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1230 transitions. [2022-11-02 20:57:20,427 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2022-11-02 20:57:20,427 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1230 transitions. [2022-11-02 20:57:20,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1230 transitions. [2022-11-02 20:57:20,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:20,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1230 transitions. [2022-11-02 20:57:20,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 76.875) internal successors, (1230), 16 states have internal predecessors, (1230), 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) [2022-11-02 20:57:20,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 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) [2022-11-02 20:57:20,435 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 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) [2022-11-02 20:57:20,436 INFO L175 Difference]: Start difference. First operand has 122 places, 113 transitions, 614 flow. Second operand 16 states and 1230 transitions. [2022-11-02 20:57:20,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 956 flow [2022-11-02 20:57:20,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 142 transitions, 793 flow, removed 67 selfloop flow, removed 7 redundant places. [2022-11-02 20:57:20,457 INFO L231 Difference]: Finished difference. Result has 137 places, 113 transitions, 601 flow [2022-11-02 20:57:20,457 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=601, PETRI_PLACES=137, PETRI_TRANSITIONS=113} [2022-11-02 20:57:20,460 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 55 predicate places. [2022-11-02 20:57:20,460 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 113 transitions, 601 flow [2022-11-02 20:57:20,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2022-11-02 20:57:20,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:20,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:20,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:57:20,462 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:57:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash -290666129, now seen corresponding path program 1 times [2022-11-02 20:57:20,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:20,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513071174] [2022-11-02 20:57:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:20,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:20,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:20,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513071174] [2022-11-02 20:57:20,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513071174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:20,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:20,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:57:20,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430407246] [2022-11-02 20:57:20,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:20,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:57:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:20,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:57:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:57:20,734 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-11-02 20:57:20,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 113 transitions, 601 flow. Second operand has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 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) [2022-11-02 20:57:20,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:20,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-11-02 20:57:20,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:20,990 INFO L130 PetriNetUnfolder]: 191/848 cut-off events. [2022-11-02 20:57:20,990 INFO L131 PetriNetUnfolder]: For 1716/1754 co-relation queries the response was YES. [2022-11-02 20:57:20,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 848 events. 191/848 cut-off events. For 1716/1754 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6952 event pairs, 3 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 2393. Up to 103 conditions per place. [2022-11-02 20:57:20,997 INFO L137 encePairwiseOnDemand]: 78/90 looper letters, 13 selfloop transitions, 7 changer transitions 44/127 dead transitions. [2022-11-02 20:57:20,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 748 flow [2022-11-02 20:57:20,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:57:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:57:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 579 transitions. [2022-11-02 20:57:21,000 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8041666666666667 [2022-11-02 20:57:21,000 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 579 transitions. [2022-11-02 20:57:21,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 579 transitions. [2022-11-02 20:57:21,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:21,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 579 transitions. [2022-11-02 20:57:21,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 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) [2022-11-02 20:57:21,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 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) [2022-11-02 20:57:21,004 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 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) [2022-11-02 20:57:21,005 INFO L175 Difference]: Start difference. First operand has 137 places, 113 transitions, 601 flow. Second operand 8 states and 579 transitions. [2022-11-02 20:57:21,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 748 flow [2022-11-02 20:57:21,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 127 transitions, 667 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-11-02 20:57:21,024 INFO L231 Difference]: Finished difference. Result has 131 places, 81 transitions, 311 flow [2022-11-02 20:57:21,025 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=311, PETRI_PLACES=131, PETRI_TRANSITIONS=81} [2022-11-02 20:57:21,025 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 49 predicate places. [2022-11-02 20:57:21,026 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 81 transitions, 311 flow [2022-11-02 20:57:21,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 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) [2022-11-02 20:57:21,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:21,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:21,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:57:21,027 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:57:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:21,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1666857661, now seen corresponding path program 2 times [2022-11-02 20:57:21,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:21,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273592420] [2022-11-02 20:57:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:21,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:21,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:21,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273592420] [2022-11-02 20:57:21,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273592420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:21,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:21,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:57:21,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612023014] [2022-11-02 20:57:21,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:21,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:57:21,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:21,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:57:21,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:57:21,280 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-11-02 20:57:21,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 81 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 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) [2022-11-02 20:57:21,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:21,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-11-02 20:57:21,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:21,414 INFO L130 PetriNetUnfolder]: 14/148 cut-off events. [2022-11-02 20:57:21,414 INFO L131 PetriNetUnfolder]: For 117/118 co-relation queries the response was YES. [2022-11-02 20:57:21,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 148 events. 14/148 cut-off events. For 117/118 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 384 event pairs, 2 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 303. Up to 18 conditions per place. [2022-11-02 20:57:21,415 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2022-11-02 20:57:21,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 81 transitions, 351 flow [2022-11-02 20:57:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:57:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:57:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 632 transitions. [2022-11-02 20:57:21,417 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7802469135802469 [2022-11-02 20:57:21,417 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 632 transitions. [2022-11-02 20:57:21,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 632 transitions. [2022-11-02 20:57:21,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:21,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 632 transitions. [2022-11-02 20:57:21,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.22222222222223) internal successors, (632), 9 states have internal predecessors, (632), 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) [2022-11-02 20:57:21,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-11-02 20:57:21,422 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-11-02 20:57:21,422 INFO L175 Difference]: Start difference. First operand has 131 places, 81 transitions, 311 flow. Second operand 9 states and 632 transitions. [2022-11-02 20:57:21,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 81 transitions, 351 flow [2022-11-02 20:57:21,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 81 transitions, 267 flow, removed 14 selfloop flow, removed 24 redundant places. [2022-11-02 20:57:21,425 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2022-11-02 20:57:21,425 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2022-11-02 20:57:21,428 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 17 predicate places. [2022-11-02 20:57:21,429 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2022-11-02 20:57:21,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 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) [2022-11-02 20:57:21,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:57:21,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 20:57:21,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:57:21,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 20:57:21,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:57:21,433 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-11-02 20:57:21,437 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:57:21,437 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:57:21,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:57:21 BasicIcfg [2022-11-02 20:57:21,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:57:21,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:57:21,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:57:21,451 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:57:21,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:15" (3/4) ... [2022-11-02 20:57:21,456 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:57:21,463 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-02 20:57:21,463 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-02 20:57:21,463 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-02 20:57:21,470 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 20:57:21,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:57:21,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:57:21,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:57:21,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:57:21,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:57:21,513 INFO L158 Benchmark]: Toolchain (without parser) took 7280.31ms. Allocated memory was 92.3MB in the beginning and 169.9MB in the end (delta: 77.6MB). Free memory was 55.6MB in the beginning and 128.7MB in the end (delta: -73.1MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-11-02 20:57:21,514 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory was 73.2MB in the beginning and 73.2MB in the end (delta: 71.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:57:21,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.75ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 57.3MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:57:21,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.16ms. Allocated memory is still 92.3MB. Free memory was 57.3MB in the beginning and 55.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:57:21,515 INFO L158 Benchmark]: Boogie Preprocessor took 24.31ms. Allocated memory is still 92.3MB. Free memory was 55.0MB in the beginning and 53.6MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:57:21,515 INFO L158 Benchmark]: RCFGBuilder took 546.24ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 53.6MB in the beginning and 90.9MB in the end (delta: -37.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2022-11-02 20:57:21,515 INFO L158 Benchmark]: TraceAbstraction took 5995.76ms. Allocated memory was 115.3MB in the beginning and 169.9MB in the end (delta: 54.5MB). Free memory was 91.3MB in the beginning and 131.9MB in the end (delta: -40.6MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-11-02 20:57:21,516 INFO L158 Benchmark]: Witness Printer took 61.57ms. Allocated memory is still 169.9MB. Free memory was 131.9MB in the beginning and 128.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:57:21,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory was 73.2MB in the beginning and 73.2MB in the end (delta: 71.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 584.75ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 57.3MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.16ms. Allocated memory is still 92.3MB. Free memory was 57.3MB in the beginning and 55.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.31ms. Allocated memory is still 92.3MB. Free memory was 55.0MB in the beginning and 53.6MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 546.24ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 53.6MB in the beginning and 90.9MB in the end (delta: -37.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5995.76ms. Allocated memory was 115.3MB in the beginning and 169.9MB in the end (delta: 54.5MB). Free memory was 91.3MB in the beginning and 131.9MB in the end (delta: -40.6MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Witness Printer took 61.57ms. Allocated memory is still 169.9MB. Free memory was 131.9MB in the beginning and 128.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 309 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 309 mSDsluCounter, 404 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 420 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 509 IncrementalHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 94 mSDtfsCounter, 509 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=5, InterpolantAutomatonStates: 89, 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, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 476 NumberOfCodeBlocks, 476 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 468 ConstructedInterpolants, 0 QuantifiedInterpolants, 1934 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2022-11-02 20:57:21,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8775bc-3f89-473f-b24f-7c85fb2a1bfa/bin/uautomizer-Dbtcem3rbc/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