./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- 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-6b4ec56 [2022-11-20 19:49:13,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:49:13,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:49:13,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:49:13,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:49:13,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:49:13,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:49:13,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:49:13,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:49:13,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:49:13,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:49:13,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:49:13,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:49:13,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:49:13,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:49:13,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:49:13,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:49:13,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:49:13,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:49:13,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:49:13,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:49:13,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:49:13,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:49:13,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:49:13,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:49:13,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:49:13,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:49:13,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:49:13,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:49:13,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:49:14,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:49:14,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:49:14,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:49:14,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:49:14,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:49:14,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:49:14,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:49:14,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:49:14,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:49:14,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:49:14,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:49:14,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:49:14,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:49:14,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:49:14,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:49:14,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:49:14,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:49:14,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:49:14,049 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:49:14,049 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:49:14,050 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:49:14,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:49:14,051 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:49:14,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:49:14,051 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:49:14,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:49:14,051 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:49:14,052 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:49:14,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:49:14,052 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:49:14,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:49:14,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:49:14,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:49:14,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:49:14,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:49:14,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:49:14,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:49:14,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:49:14,054 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:49:14,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:49:14,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:49:14,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:49:14,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:49:14,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:49:14,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:49:14,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:49:14,055 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:49:14,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:49:14,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:49:14,056 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:49:14,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:49:14,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:49:14,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:49:14,057 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_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2022-11-20 19:49:14,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:49:14,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:49:14,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:49:14,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:49:14,441 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:49:14,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 19:49:17,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:49:18,081 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:49:18,082 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 19:49:18,096 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/data/a28b24209/fbdff78d14a4428cba6ae2fe69464318/FLAG86d81bea8 [2022-11-20 19:49:18,113 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/data/a28b24209/fbdff78d14a4428cba6ae2fe69464318 [2022-11-20 19:49:18,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:49:18,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:49:18,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:49:18,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:49:18,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:49:18,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b88eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18, skipping insertion in model container [2022-11-20 19:49:18,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:49:18,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:49:18,354 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-20 19:49:18,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:49:18,619 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:49:18,642 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-20 19:49:18,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:49:18,726 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:49:18,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18 WrapperNode [2022-11-20 19:49:18,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:49:18,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:49:18,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:49:18,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:49:18,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,803 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-11-20 19:49:18,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:49:18,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:49:18,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:49:18,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:49:18,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,851 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:49:18,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:49:18,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:49:18,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:49:18,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (1/1) ... [2022-11-20 19:49:18,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:49:18,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:49:18,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:49:18,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 19:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 19:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:49:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 19:49:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 19:49:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 19:49:18,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 19:49:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 19:49:18,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 19:49:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 19:49:18,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 19:49:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 19:49:18,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 19:49:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:49:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 19:49:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:49:18,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:49:18,951 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 19:49:19,225 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:49:19,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:49:19,567 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:49:19,583 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:49:19,584 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 19:49:19,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:49:19 BoogieIcfgContainer [2022-11-20 19:49:19,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:49:19,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:49:19,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:49:19,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:49:19,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:49:18" (1/3) ... [2022-11-20 19:49:19,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26091067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:49:19, skipping insertion in model container [2022-11-20 19:49:19,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:18" (2/3) ... [2022-11-20 19:49:19,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26091067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:49:19, skipping insertion in model container [2022-11-20 19:49:19,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:49:19" (3/3) ... [2022-11-20 19:49:19,612 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 19:49:19,627 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 19:49:19,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:49:19,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:49:19,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 19:49:19,768 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 19:49:19,814 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 19:49:19,828 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 106 transitions, 232 flow [2022-11-20 19:49:19,831 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 106 transitions, 232 flow [2022-11-20 19:49:19,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 232 flow [2022-11-20 19:49:19,890 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2022-11-20 19:49:19,891 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 19:49:19,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-11-20 19:49:19,898 INFO L119 LiptonReduction]: Number of co-enabled transitions 2334 [2022-11-20 19:49:23,222 INFO L134 LiptonReduction]: Checked pairs total: 4231 [2022-11-20 19:49:23,222 INFO L136 LiptonReduction]: Total number of compositions: 94 [2022-11-20 19:49:23,230 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2022-11-20 19:49:23,300 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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) [2022-11-20 19:49:23,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:49:23,325 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=FINITE_AUTOMATA, 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;@2bd916f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:49:23,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 19:49:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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) [2022-11-20 19:49:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 19:49:23,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:23,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:23,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:23,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash -677689641, now seen corresponding path program 1 times [2022-11-20 19:49:23,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:23,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891827209] [2022-11-20 19:49:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:23,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:23,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:23,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891827209] [2022-11-20 19:49:23,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891827209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:23,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:23,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:49:23,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427337617] [2022-11-20 19:49:23,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:23,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:49:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:49:23,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:49:23,922 INFO L87 Difference]: Start difference. First operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-20 19:49:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:24,044 INFO L93 Difference]: Finished difference Result 793 states and 2539 transitions. [2022-11-20 19:49:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:49:24,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) Word has length 10 [2022-11-20 19:49:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:24,082 INFO L225 Difference]: With dead ends: 793 [2022-11-20 19:49:24,083 INFO L226 Difference]: Without dead ends: 745 [2022-11-20 19:49:24,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:49:24,087 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:24,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 3 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:24,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-20 19:49:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 679. [2022-11-20 19:49:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 3.274336283185841) internal successors, (2220), 678 states have internal predecessors, (2220), 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) [2022-11-20 19:49:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2220 transitions. [2022-11-20 19:49:24,209 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2220 transitions. Word has length 10 [2022-11-20 19:49:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:24,210 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 2220 transitions. [2022-11-20 19:49:24,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-20 19:49:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2220 transitions. [2022-11-20 19:49:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 19:49:24,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:24,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:24,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:49:24,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2027993504, now seen corresponding path program 1 times [2022-11-20 19:49:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:24,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714143367] [2022-11-20 19:49:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:24,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:24,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714143367] [2022-11-20 19:49:24,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714143367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:24,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:24,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:49:24,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722879504] [2022-11-20 19:49:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:24,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:49:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:49:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:24,556 INFO L87 Difference]: Start difference. First operand 679 states and 2220 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 19:49:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:24,637 INFO L93 Difference]: Finished difference Result 700 states and 2225 transitions. [2022-11-20 19:49:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:49:24,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2022-11-20 19:49:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:24,644 INFO L225 Difference]: With dead ends: 700 [2022-11-20 19:49:24,645 INFO L226 Difference]: Without dead ends: 700 [2022-11-20 19:49:24,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:24,647 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:24,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-20 19:49:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 652. [2022-11-20 19:49:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.23963133640553) internal successors, (2109), 651 states have internal predecessors, (2109), 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) [2022-11-20 19:49:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2109 transitions. [2022-11-20 19:49:24,681 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2109 transitions. Word has length 11 [2022-11-20 19:49:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:24,681 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 2109 transitions. [2022-11-20 19:49:24,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 19:49:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2109 transitions. [2022-11-20 19:49:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 19:49:24,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:24,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:24,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:49:24,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash 466403447, now seen corresponding path program 1 times [2022-11-20 19:49:24,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:24,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873916580] [2022-11-20 19:49:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:24,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:24,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:24,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873916580] [2022-11-20 19:49:24,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873916580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:24,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:24,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:49:24,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615579598] [2022-11-20 19:49:24,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:24,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:49:24,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:24,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:49:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:49:24,884 INFO L87 Difference]: Start difference. First operand 652 states and 2109 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-20 19:49:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:24,939 INFO L93 Difference]: Finished difference Result 628 states and 2015 transitions. [2022-11-20 19:49:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:49:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2022-11-20 19:49:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:24,944 INFO L225 Difference]: With dead ends: 628 [2022-11-20 19:49:24,945 INFO L226 Difference]: Without dead ends: 628 [2022-11-20 19:49:24,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:49:24,949 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:24,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:49:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-20 19:49:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-11-20 19:49:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 3.2137161084529504) internal successors, (2015), 627 states have internal predecessors, (2015), 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) [2022-11-20 19:49:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2015 transitions. [2022-11-20 19:49:25,004 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2015 transitions. Word has length 11 [2022-11-20 19:49:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:25,005 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 2015 transitions. [2022-11-20 19:49:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-20 19:49:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2015 transitions. [2022-11-20 19:49:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 19:49:25,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:25,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:25,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:49:25,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:25,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1612696181, now seen corresponding path program 1 times [2022-11-20 19:49:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:25,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155345941] [2022-11-20 19:49:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:25,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:25,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:25,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155345941] [2022-11-20 19:49:25,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155345941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:25,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:25,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:49:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748945173] [2022-11-20 19:49:25,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:49:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:49:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:25,144 INFO L87 Difference]: Start difference. First operand 628 states and 2015 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 19:49:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:25,248 INFO L93 Difference]: Finished difference Result 646 states and 2030 transitions. [2022-11-20 19:49:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:49:25,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 12 [2022-11-20 19:49:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:25,253 INFO L225 Difference]: With dead ends: 646 [2022-11-20 19:49:25,253 INFO L226 Difference]: Without dead ends: 646 [2022-11-20 19:49:25,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:25,255 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:25,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-20 19:49:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 586. [2022-11-20 19:49:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.1965811965811968) internal successors, (1870), 585 states have internal predecessors, (1870), 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) [2022-11-20 19:49:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1870 transitions. [2022-11-20 19:49:25,279 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1870 transitions. Word has length 12 [2022-11-20 19:49:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:25,280 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 1870 transitions. [2022-11-20 19:49:25,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 19:49:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1870 transitions. [2022-11-20 19:49:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 19:49:25,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:25,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:25,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 19:49:25,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash -975982850, now seen corresponding path program 1 times [2022-11-20 19:49:25,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:25,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709991495] [2022-11-20 19:49:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:25,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:25,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:25,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709991495] [2022-11-20 19:49:25,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709991495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:25,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:25,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:49:25,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43717868] [2022-11-20 19:49:25,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:25,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:49:25,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:49:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:25,398 INFO L87 Difference]: Start difference. First operand 586 states and 1870 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-20 19:49:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:25,475 INFO L93 Difference]: Finished difference Result 802 states and 2506 transitions. [2022-11-20 19:49:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:49:25,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) Word has length 13 [2022-11-20 19:49:25,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:25,479 INFO L225 Difference]: With dead ends: 802 [2022-11-20 19:49:25,479 INFO L226 Difference]: Without dead ends: 418 [2022-11-20 19:49:25,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:49:25,480 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:25,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:25,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-20 19:49:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-11-20 19:49:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 3.13189448441247) internal successors, (1306), 417 states have internal predecessors, (1306), 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) [2022-11-20 19:49:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1306 transitions. [2022-11-20 19:49:25,500 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1306 transitions. Word has length 13 [2022-11-20 19:49:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:25,500 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1306 transitions. [2022-11-20 19:49:25,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-20 19:49:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1306 transitions. [2022-11-20 19:49:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 19:49:25,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:25,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:25,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:49:25,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1554648379, now seen corresponding path program 1 times [2022-11-20 19:49:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:25,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350398182] [2022-11-20 19:49:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:25,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:25,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:25,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350398182] [2022-11-20 19:49:25,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350398182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:25,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:25,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:49:25,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342209705] [2022-11-20 19:49:25,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:25,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:49:25,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:49:25,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:25,690 INFO L87 Difference]: Start difference. First operand 418 states and 1306 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-20 19:49:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:25,787 INFO L93 Difference]: Finished difference Result 532 states and 1601 transitions. [2022-11-20 19:49:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:49:25,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2022-11-20 19:49:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:25,791 INFO L225 Difference]: With dead ends: 532 [2022-11-20 19:49:25,791 INFO L226 Difference]: Without dead ends: 412 [2022-11-20 19:49:25,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:25,792 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:25,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:25,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-20 19:49:25,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2022-11-20 19:49:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.032) internal successors, (1137), 375 states have internal predecessors, (1137), 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) [2022-11-20 19:49:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1137 transitions. [2022-11-20 19:49:25,813 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1137 transitions. Word has length 13 [2022-11-20 19:49:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:25,814 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 1137 transitions. [2022-11-20 19:49:25,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-20 19:49:25,814 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1137 transitions. [2022-11-20 19:49:25,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 19:49:25,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:25,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:25,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 19:49:25,816 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1546058000, now seen corresponding path program 2 times [2022-11-20 19:49:25,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:25,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169209360] [2022-11-20 19:49:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:25,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:25,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:25,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169209360] [2022-11-20 19:49:25,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169209360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:25,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:25,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:49:25,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977327909] [2022-11-20 19:49:25,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:25,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:49:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:25,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:49:25,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:49:25,953 INFO L87 Difference]: Start difference. First operand 376 states and 1137 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-20 19:49:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:26,055 INFO L93 Difference]: Finished difference Result 550 states and 1582 transitions. [2022-11-20 19:49:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:49:26,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2022-11-20 19:49:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:26,058 INFO L225 Difference]: With dead ends: 550 [2022-11-20 19:49:26,058 INFO L226 Difference]: Without dead ends: 298 [2022-11-20 19:49:26,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:49:26,059 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 66 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:26,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-20 19:49:26,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 274. [2022-11-20 19:49:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.838827838827839) internal successors, (775), 273 states have internal predecessors, (775), 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) [2022-11-20 19:49:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2022-11-20 19:49:26,070 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 13 [2022-11-20 19:49:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:26,070 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2022-11-20 19:49:26,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-20 19:49:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2022-11-20 19:49:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 19:49:26,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:26,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:26,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 19:49:26,072 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 2 more)] === [2022-11-20 19:49:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1417135279, now seen corresponding path program 1 times [2022-11-20 19:49:26,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:26,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304505842] [2022-11-20 19:49:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:26,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:26,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304505842] [2022-11-20 19:49:26,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304505842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:26,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:26,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:49:26,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349587564] [2022-11-20 19:49:26,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:26,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:49:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:49:26,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:26,270 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-11-20 19:49:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:26,353 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2022-11-20 19:49:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:49:26,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2022-11-20 19:49:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:26,355 INFO L225 Difference]: With dead ends: 345 [2022-11-20 19:49:26,355 INFO L226 Difference]: Without dead ends: 252 [2022-11-20 19:49:26,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:49:26,356 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:26,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 10 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:26,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-20 19:49:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-11-20 19:49:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.689243027888446) internal successors, (675), 251 states have internal predecessors, (675), 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) [2022-11-20 19:49:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2022-11-20 19:49:26,390 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2022-11-20 19:49:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:26,391 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2022-11-20 19:49:26,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-11-20 19:49:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2022-11-20 19:49:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 19:49:26,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:26,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:26,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 19:49:26,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:26,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1673003938, now seen corresponding path program 1 times [2022-11-20 19:49:26,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:26,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500340601] [2022-11-20 19:49:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:26,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:26,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:26,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500340601] [2022-11-20 19:49:26,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500340601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:26,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:26,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:49:26,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947946466] [2022-11-20 19:49:26,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:26,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:49:26,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:49:26,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:49:26,538 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-20 19:49:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:26,633 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2022-11-20 19:49:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:49:26,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) Word has length 15 [2022-11-20 19:49:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:26,635 INFO L225 Difference]: With dead ends: 278 [2022-11-20 19:49:26,635 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 19:49:26,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:49:26,636 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 41 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:26,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 13 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:26,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 19:49:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-20 19:49:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.4356435643564356) internal successors, (492), 202 states have internal predecessors, (492), 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) [2022-11-20 19:49:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2022-11-20 19:49:26,644 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2022-11-20 19:49:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:26,645 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2022-11-20 19:49:26,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-20 19:49:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2022-11-20 19:49:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 19:49:26,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:26,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:26,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 19:49:26,647 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:26,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash -323278466, now seen corresponding path program 1 times [2022-11-20 19:49:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:26,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973658910] [2022-11-20 19:49:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:26,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:26,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:26,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973658910] [2022-11-20 19:49:26,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973658910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:26,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:26,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:49:26,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982414626] [2022-11-20 19:49:26,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:26,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:49:26,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:26,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:49:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:49:26,799 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 19:49:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:26,911 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2022-11-20 19:49:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:49:26,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2022-11-20 19:49:26,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:26,912 INFO L225 Difference]: With dead ends: 200 [2022-11-20 19:49:26,913 INFO L226 Difference]: Without dead ends: 162 [2022-11-20 19:49:26,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:49:26,914 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 65 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:26,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 13 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:26,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-20 19:49:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-20 19:49:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.329192546583851) internal successors, (375), 161 states have internal predecessors, (375), 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) [2022-11-20 19:49:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2022-11-20 19:49:26,921 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2022-11-20 19:49:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:26,922 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2022-11-20 19:49:26,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 19:49:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2022-11-20 19:49:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 19:49:26,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:26,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:26,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 19:49:26,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1538470344, now seen corresponding path program 1 times [2022-11-20 19:49:26,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:26,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852345530] [2022-11-20 19:49:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:26,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:27,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:27,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852345530] [2022-11-20 19:49:27,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852345530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:27,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:27,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:49:27,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614685038] [2022-11-20 19:49:27,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:27,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:49:27,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:27,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:49:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:49:27,058 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-20 19:49:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:27,154 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2022-11-20 19:49:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:49:27,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) Word has length 18 [2022-11-20 19:49:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:27,156 INFO L225 Difference]: With dead ends: 194 [2022-11-20 19:49:27,156 INFO L226 Difference]: Without dead ends: 127 [2022-11-20 19:49:27,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:49:27,157 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:27,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 5 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-20 19:49:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2022-11-20 19:49:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.1370967741935485) internal successors, (265), 124 states have internal predecessors, (265), 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) [2022-11-20 19:49:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2022-11-20 19:49:27,163 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2022-11-20 19:49:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:27,164 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2022-11-20 19:49:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-20 19:49:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2022-11-20 19:49:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 19:49:27,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:27,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:27,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 19:49:27,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:27,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 354537564, now seen corresponding path program 2 times [2022-11-20 19:49:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:27,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066879456] [2022-11-20 19:49:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:27,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:27,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066879456] [2022-11-20 19:49:27,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066879456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:27,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:27,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:49:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911002415] [2022-11-20 19:49:27,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:27,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:49:27,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:49:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:49:27,342 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-20 19:49:27,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:27,446 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2022-11-20 19:49:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:49:27,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) Word has length 18 [2022-11-20 19:49:27,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:27,447 INFO L225 Difference]: With dead ends: 120 [2022-11-20 19:49:27,448 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 19:49:27,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:49:27,448 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 53 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:27,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 11 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:49:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 19:49:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-20 19:49:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 70 states have internal predecessors, (143), 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) [2022-11-20 19:49:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2022-11-20 19:49:27,452 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2022-11-20 19:49:27,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:27,452 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2022-11-20 19:49:27,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-20 19:49:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2022-11-20 19:49:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 19:49:27,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:27,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:27,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 19:49:27,453 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 19:49:27,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1405307768, now seen corresponding path program 1 times [2022-11-20 19:49:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:27,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898490142] [2022-11-20 19:49:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:27,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:27,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:27,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898490142] [2022-11-20 19:49:27,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898490142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:27,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:27,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:49:27,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240748339] [2022-11-20 19:49:27,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:27,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:49:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:27,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:49:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:49:27,579 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-20 19:49:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:27,629 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2022-11-20 19:49:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:49:27,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) Word has length 20 [2022-11-20 19:49:27,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:27,630 INFO L225 Difference]: With dead ends: 70 [2022-11-20 19:49:27,630 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 19:49:27,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:49:27,631 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:27,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:49:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 19:49:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 19:49:27,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-20 19:49:27,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 19:49:27,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-11-20 19:49:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:27,633 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 19:49:27,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-20 19:49:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 19:49:27,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 19:49:27,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-20 19:49:27,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-20 19:49:27,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-20 19:49:27,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-20 19:49:27,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-20 19:49:27,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 19:49:27,640 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:27,643 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 19:49:27,643 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:49:27,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:49:27 BasicIcfg [2022-11-20 19:49:27,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:49:27,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:49:27,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:49:27,647 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:49:27,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:49:19" (3/4) ... [2022-11-20 19:49:27,650 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 19:49:27,656 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 19:49:27,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 19:49:27,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-20 19:49:27,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-20 19:49:27,661 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-20 19:49:27,661 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 19:49:27,661 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 19:49:27,662 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 19:49:27,692 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:49:27,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:49:27,693 INFO L158 Benchmark]: Toolchain (without parser) took 9575.16ms. Allocated memory was 130.0MB in the beginning and 209.7MB in the end (delta: 79.7MB). Free memory was 85.1MB in the beginning and 90.6MB in the end (delta: -5.5MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. [2022-11-20 19:49:27,694 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 103.5MB in the end (delta: 78.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:49:27,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 607.97ms. Allocated memory is still 130.0MB. Free memory was 85.1MB in the beginning and 64.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 19:49:27,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.53ms. Allocated memory is still 130.0MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:49:27,695 INFO L158 Benchmark]: Boogie Preprocessor took 61.57ms. Allocated memory is still 130.0MB. Free memory was 62.6MB in the beginning and 61.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:49:27,695 INFO L158 Benchmark]: RCFGBuilder took 720.13ms. Allocated memory was 130.0MB in the beginning and 174.1MB in the end (delta: 44.0MB). Free memory was 61.1MB in the beginning and 140.1MB in the end (delta: -79.1MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2022-11-20 19:49:27,695 INFO L158 Benchmark]: TraceAbstraction took 8054.73ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 139.7MB in the beginning and 93.7MB in the end (delta: 46.0MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2022-11-20 19:49:27,696 INFO L158 Benchmark]: Witness Printer took 46.47ms. Allocated memory is still 209.7MB. Free memory was 93.7MB in the beginning and 90.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 19:49:27,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 103.5MB in the end (delta: 78.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 607.97ms. Allocated memory is still 130.0MB. Free memory was 85.1MB in the beginning and 64.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.53ms. Allocated memory is still 130.0MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.57ms. Allocated memory is still 130.0MB. Free memory was 62.6MB in the beginning and 61.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 720.13ms. Allocated memory was 130.0MB in the beginning and 174.1MB in the end (delta: 44.0MB). Free memory was 61.1MB in the beginning and 140.1MB in the end (delta: -79.1MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8054.73ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 139.7MB in the beginning and 93.7MB in the end (delta: 46.0MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. * Witness Printer took 46.47ms. Allocated memory is still 209.7MB. Free memory was 93.7MB in the beginning and 90.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 117 PlacesBefore, 38 PlacesAfterwards, 106 TransitionsBefore, 26 TransitionsAfterwards, 2334 CoEnabledTransitionPairs, 7 FixpointIterations, 23 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 1 ChoiceCompositions, 94 TotalNumberOfCompositions, 4231 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2610, independent: 2497, independent conditional: 0, independent unconditional: 2497, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1710, independent: 1675, independent conditional: 0, independent unconditional: 1675, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1710, independent: 1660, independent conditional: 0, independent unconditional: 1660, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 137, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2610, independent: 822, independent conditional: 0, independent unconditional: 822, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 1710, unknown conditional: 0, unknown unconditional: 1710] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 9 procedures, 135 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 393 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 393 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 789 IncrementalHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 33 mSDtfsCounter, 789 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=679occurred in iteration=1, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 236 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 841 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2022-11-20 19:49:27,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aabe09ce-a92f-4a73-b8f7-09d6e77a3b36/bin/utaipan-6cKwYrpEi9/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