./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe033_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/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_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe033_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/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_0af06623-902c-4ef6-bfc1-b6dab569cdaa/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 03e09f2995f610da86eeaa1f1ee03bc9ee01699bf21a2567d5a1129cd8929582 --- 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 21:03:59,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:03:59,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:03:59,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:03:59,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:03:59,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:03:59,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:03:59,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:03:59,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:03:59,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:03:59,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:03:59,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:03:59,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:03:59,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:03:59,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:03:59,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:03:59,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:03:59,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:03:59,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:03:59,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:03:59,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:03:59,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:03:59,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:03:59,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:03:59,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:03:59,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:03:59,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:03:59,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:03:59,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:03:59,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:03:59,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:03:59,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:03:59,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:03:59,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:03:59,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:03:59,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:03:59,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:03:59,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:03:59,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:03:59,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:03:59,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:03:59,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:03:59,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:03:59,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:03:59,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:03:59,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:03:59,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:03:59,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:03:59,698 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:03:59,698 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:03:59,699 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:03:59,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:03:59,699 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:03:59,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:03:59,700 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:03:59,700 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:03:59,700 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:03:59,701 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:03:59,701 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:03:59,701 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:03:59,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:03:59,702 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:03:59,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:03:59,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:03:59,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:03:59,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:03:59,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:03:59,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:03:59,704 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:03:59,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:03:59,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:03:59,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:03:59,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:03:59,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:03:59,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:03:59,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:03:59,706 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:03:59,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:03:59,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:03:59,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:03:59,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:03:59,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:03:59,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:03:59,708 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_0af06623-902c-4ef6-bfc1-b6dab569cdaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e09f2995f610da86eeaa1f1ee03bc9ee01699bf21a2567d5a1129cd8929582 [2022-11-20 21:03:59,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:03:59,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:03:59,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:03:59,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:03:59,990 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:03:59,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/pthread-wmm/safe033_tso.i [2022-11-20 21:04:03,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:04:03,325 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:04:03,326 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/sv-benchmarks/c/pthread-wmm/safe033_tso.i [2022-11-20 21:04:03,338 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/data/7182e32d6/ec43aab7e1d146baada4bffee0caf741/FLAG43ad92c11 [2022-11-20 21:04:03,356 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/data/7182e32d6/ec43aab7e1d146baada4bffee0caf741 [2022-11-20 21:04:03,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:04:03,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:04:03,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:04:03,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:04:03,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:04:03,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ba94dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03, skipping insertion in model container [2022-11-20 21:04:03,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:04:03,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:04:03,636 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_0af06623-902c-4ef6-bfc1-b6dab569cdaa/sv-benchmarks/c/pthread-wmm/safe033_tso.i[945,958] [2022-11-20 21:04:03,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:04:03,787 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:04:03,805 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_0af06623-902c-4ef6-bfc1-b6dab569cdaa/sv-benchmarks/c/pthread-wmm/safe033_tso.i[945,958] [2022-11-20 21:04:03,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:04:03,870 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:04:03,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03 WrapperNode [2022-11-20 21:04:03,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:04:03,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:04:03,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:04:03,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:04:03,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,912 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-11-20 21:04:03,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:04:03,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:04:03,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:04:03,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:04:03,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:04:03,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:04:03,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:04:03,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:04:03,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (1/1) ... [2022-11-20 21:04:03,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:04:03,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:04:03,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:04:04,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:04:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:04:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 21:04:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:04:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:04:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:04:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 21:04:04,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 21:04:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 21:04:04,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 21:04:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:04:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 21:04:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:04:04,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:04:04,040 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 21:04:04,225 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:04:04,227 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:04:04,432 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:04:04,438 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:04:04,442 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 21:04:04,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:04:04 BoogieIcfgContainer [2022-11-20 21:04:04,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:04:04,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:04:04,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:04:04,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:04:04,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:04:03" (1/3) ... [2022-11-20 21:04:04,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b75926f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:04:04, skipping insertion in model container [2022-11-20 21:04:04,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:04:03" (2/3) ... [2022-11-20 21:04:04,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b75926f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:04:04, skipping insertion in model container [2022-11-20 21:04:04,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:04:04" (3/3) ... [2022-11-20 21:04:04,463 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2022-11-20 21:04:04,473 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 21:04:04,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:04:04,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:04:04,485 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 21:04:04,532 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 21:04:04,588 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 21:04:04,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 74 transitions, 158 flow [2022-11-20 21:04:04,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 74 transitions, 158 flow [2022-11-20 21:04:04,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 158 flow [2022-11-20 21:04:04,649 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2022-11-20 21:04:04,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 21:04:04,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-11-20 21:04:04,655 INFO L119 LiptonReduction]: Number of co-enabled transitions 876 [2022-11-20 21:04:07,142 INFO L134 LiptonReduction]: Checked pairs total: 1670 [2022-11-20 21:04:07,142 INFO L136 LiptonReduction]: Total number of compositions: 69 [2022-11-20 21:04:07,149 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2022-11-20 21:04:07,185 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74 states, 73 states have (on average 2.410958904109589) internal successors, (176), 73 states have internal predecessors, (176), 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 21:04:07,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:04:07,219 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;@55b218c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:04:07,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 21:04:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 73 states have (on average 2.410958904109589) internal successors, (176), 73 states have internal predecessors, (176), 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 21:04:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 21:04:07,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:04:07,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 21:04:07,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 21:04:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:04:07,240 INFO L85 PathProgramCache]: Analyzing trace with hash -668425127, now seen corresponding path program 1 times [2022-11-20 21:04:07,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:04:07,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44701621] [2022-11-20 21:04:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:04:07,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:04:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:04:07,428 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 21:04:07,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:04:07,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44701621] [2022-11-20 21:04:07,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44701621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:04:07,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:04:07,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:04:07,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225370161] [2022-11-20 21:04:07,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:04:07,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:04:07,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:04:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:04:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:04:07,471 INFO L87 Difference]: Start difference. First operand has 74 states, 73 states have (on average 2.410958904109589) internal successors, (176), 73 states have internal predecessors, (176), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 21:04:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:04:07,518 INFO L93 Difference]: Finished difference Result 74 states and 160 transitions. [2022-11-20 21:04:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:04:07,521 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-20 21:04:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:04:07,530 INFO L225 Difference]: With dead ends: 74 [2022-11-20 21:04:07,530 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 21:04:07,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:04:07,536 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:04:07,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:04:07,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 21:04:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-20 21:04:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.191780821917808) internal successors, (160), 73 states have internal predecessors, (160), 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 21:04:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2022-11-20 21:04:07,588 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2022-11-20 21:04:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:04:07,590 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2022-11-20 21:04:07,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 21:04:07,594 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2022-11-20 21:04:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 21:04:07,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:04:07,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:04:07,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:04:07,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 21:04:07,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:04:07,597 INFO L85 PathProgramCache]: Analyzing trace with hash 753651727, now seen corresponding path program 1 times [2022-11-20 21:04:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:04:07,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095729828] [2022-11-20 21:04:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:04:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:04:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:04:07,888 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 21:04:07,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:04:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095729828] [2022-11-20 21:04:07,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095729828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:04:07,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:04:07,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:04:07,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269436233] [2022-11-20 21:04:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:04:07,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:04:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:04:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:04:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:04:07,892 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 21:04:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:04:07,958 INFO L93 Difference]: Finished difference Result 86 states and 174 transitions. [2022-11-20 21:04:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:04:07,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-20 21:04:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:04:07,960 INFO L225 Difference]: With dead ends: 86 [2022-11-20 21:04:07,960 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 21:04:07,960 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 21:04:07,961 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:04:07,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:04:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 21:04:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-20 21:04:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.1449275362318843) internal successors, (148), 69 states have internal predecessors, (148), 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 21:04:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 148 transitions. [2022-11-20 21:04:07,970 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 148 transitions. Word has length 7 [2022-11-20 21:04:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:04:07,970 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 148 transitions. [2022-11-20 21:04:07,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 21:04:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 148 transitions. [2022-11-20 21:04:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 21:04:07,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:04:07,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:04:07,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:04:07,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 21:04:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:04:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash 993516481, now seen corresponding path program 1 times [2022-11-20 21:04:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:04:07,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352156223] [2022-11-20 21:04:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:04:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:04:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:04:08,221 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 21:04:08,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:04:08,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352156223] [2022-11-20 21:04:08,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352156223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:04:08,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:04:08,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:04:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027433486] [2022-11-20 21:04:08,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:04:08,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:04:08,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:04:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:04:08,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:04:08,224 INFO L87 Difference]: Start difference. First operand 70 states and 148 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 21:04:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:04:08,258 INFO L93 Difference]: Finished difference Result 47 states and 79 transitions. [2022-11-20 21:04:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:04:08,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-20 21:04:08,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:04:08,259 INFO L225 Difference]: With dead ends: 47 [2022-11-20 21:04:08,261 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 21:04:08,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:04:08,263 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:04:08,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:04:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 21:04:08,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-20 21:04:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 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 21:04:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2022-11-20 21:04:08,277 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 8 [2022-11-20 21:04:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:04:08,278 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2022-11-20 21:04:08,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 21:04:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2022-11-20 21:04:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 21:04:08,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:04:08,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:04:08,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:04:08,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 21:04:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:04:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1218118952, now seen corresponding path program 1 times [2022-11-20 21:04:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:04:08,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848626504] [2022-11-20 21:04:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:04:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:04:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:04:08,499 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 21:04:08,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:04:08,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848626504] [2022-11-20 21:04:08,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848626504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:04:08,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:04:08,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:04:08,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264705430] [2022-11-20 21:04:08,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:04:08,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:04:08,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:04:08,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:04:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:04:08,511 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 21:04:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:04:08,545 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2022-11-20 21:04:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:04:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 21:04:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:04:08,546 INFO L225 Difference]: With dead ends: 29 [2022-11-20 21:04:08,546 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 21:04:08,546 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 21:04:08,549 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:04:08,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:04:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 21:04:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 21:04:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 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 21:04:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2022-11-20 21:04:08,559 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2022-11-20 21:04:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:04:08,559 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2022-11-20 21:04:08,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 21:04:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2022-11-20 21:04:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 21:04:08,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:04:08,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:04:08,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:04:08,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 21:04:08,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:04:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1966038479, now seen corresponding path program 1 times [2022-11-20 21:04:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:04:08,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022942991] [2022-11-20 21:04:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:04:08,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:04:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:04:08,732 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 21:04:08,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:04:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022942991] [2022-11-20 21:04:08,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022942991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:04:08,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:04:08,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:04:08,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828550349] [2022-11-20 21:04:08,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:04:08,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:04:08,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:04:08,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:04:08,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:04:08,741 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 21:04:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:04:08,818 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2022-11-20 21:04:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:04:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 21:04:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:04:08,818 INFO L225 Difference]: With dead ends: 32 [2022-11-20 21:04:08,818 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:04:08,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:04:08,820 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:04:08,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:04:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:04:08,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:04:08,821 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 21:04:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:04:08,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-20 21:04:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:04:08,822 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:04:08,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 21:04:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:04:08,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:04:08,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-20 21:04:08,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-20 21:04:08,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-20 21:04:08,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:04:08,828 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 21:04:08,830 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 21:04:08,830 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:04:08,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:04:08 BasicIcfg [2022-11-20 21:04:08,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:04:08,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:04:08,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:04:08,834 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:04:08,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:04:04" (3/4) ... [2022-11-20 21:04:08,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:04:08,843 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 21:04:08,843 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 21:04:08,849 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 21:04:08,849 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 21:04:08,849 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 21:04:08,849 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 21:04:08,885 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:04:08,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:04:08,885 INFO L158 Benchmark]: Toolchain (without parser) took 5524.83ms. Allocated memory was 153.1MB in the beginning and 213.9MB in the end (delta: 60.8MB). Free memory was 108.5MB in the beginning and 83.3MB in the end (delta: 25.2MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2022-11-20 21:04:08,886 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:04:08,886 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.49ms. Allocated memory is still 153.1MB. Free memory was 108.1MB in the beginning and 88.1MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 21:04:08,886 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.55ms. Allocated memory is still 153.1MB. Free memory was 88.1MB in the beginning and 86.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:04:08,886 INFO L158 Benchmark]: Boogie Preprocessor took 23.35ms. Allocated memory is still 153.1MB. Free memory was 86.5MB in the beginning and 85.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:04:08,887 INFO L158 Benchmark]: RCFGBuilder took 508.36ms. Allocated memory is still 153.1MB. Free memory was 85.0MB in the beginning and 72.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 21:04:08,887 INFO L158 Benchmark]: TraceAbstraction took 4385.48ms. Allocated memory was 153.1MB in the beginning and 213.9MB in the end (delta: 60.8MB). Free memory was 71.9MB in the beginning and 86.4MB in the end (delta: -14.5MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2022-11-20 21:04:08,887 INFO L158 Benchmark]: Witness Printer took 51.27ms. Allocated memory is still 213.9MB. Free memory was 86.4MB in the beginning and 83.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:04:08,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 509.49ms. Allocated memory is still 153.1MB. Free memory was 108.1MB in the beginning and 88.1MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.55ms. Allocated memory is still 153.1MB. Free memory was 88.1MB in the beginning and 86.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.35ms. Allocated memory is still 153.1MB. Free memory was 86.5MB in the beginning and 85.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 508.36ms. Allocated memory is still 153.1MB. Free memory was 85.0MB in the beginning and 72.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4385.48ms. Allocated memory was 153.1MB in the beginning and 213.9MB in the end (delta: 60.8MB). Free memory was 71.9MB in the beginning and 86.4MB in the end (delta: -14.5MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. * Witness Printer took 51.27ms. Allocated memory is still 213.9MB. Free memory was 86.4MB in the beginning and 83.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 79 PlacesBefore, 23 PlacesAfterwards, 74 TransitionsBefore, 17 TransitionsAfterwards, 876 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 69 TotalNumberOfCompositions, 1670 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1004, independent: 938, independent conditional: 0, independent unconditional: 938, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 628, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 628, independent: 605, independent conditional: 0, independent unconditional: 605, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 87, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1004, independent: 331, independent conditional: 0, independent unconditional: 331, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 628, unknown conditional: 0, unknown unconditional: 628] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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 5 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 140 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 12 mSDtfsCounter, 140 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 125 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 21:04:08,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af06623-902c-4ef6-bfc1-b6dab569cdaa/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