./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW --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 088f6c2624c9ef470b1e5d5938ff0e2c2948b61c2ac98da6e426747245a7aaad --- 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-4e7fbc6 [2022-11-23 14:51:07,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:51:07,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:51:07,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:51:07,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:51:07,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:51:07,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:51:07,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:51:07,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:51:07,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:51:07,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:51:07,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:51:07,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:51:07,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:51:07,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:51:07,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:51:07,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:51:07,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:51:07,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:51:07,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:51:07,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:51:07,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:51:07,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:51:07,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:51:07,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:51:07,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:51:07,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:51:07,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:51:07,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:51:07,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:51:07,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:51:07,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:51:07,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:51:07,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:51:07,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:51:07,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:51:07,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:51:07,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:51:07,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:51:07,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:51:07,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:51:07,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:51:07,791 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:51:07,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:51:07,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:51:07,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:51:07,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:51:07,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:51:07,794 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:51:07,795 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:51:07,795 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:51:07,795 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:51:07,797 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:51:07,797 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:51:07,797 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:51:07,798 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:51:07,798 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:51:07,798 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:51:07,799 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:51:07,799 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:51:07,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:51:07,800 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:51:07,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:51:07,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:51:07,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:51:07,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:51:07,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:51:07,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:51:07,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:51:07,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:51:07,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:51:07,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:51:07,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:51:07,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:51:07,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:51:07,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:51:07,805 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:51:07,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:51:07,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:51:07,806 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:51:07,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:51:07,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:51:07,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:51:07,807 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_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 088f6c2624c9ef470b1e5d5938ff0e2c2948b61c2ac98da6e426747245a7aaad [2022-11-23 14:51:08,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:51:08,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:51:08,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:51:08,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:51:08,193 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:51:08,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c [2022-11-23 14:51:11,293 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:51:11,653 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:51:11,654 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c [2022-11-23 14:51:11,667 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/data/8ef203e01/9a289e83b1d44473b4cb895078e3e9be/FLAG5fab3a41c [2022-11-23 14:51:11,685 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/data/8ef203e01/9a289e83b1d44473b4cb895078e3e9be [2022-11-23 14:51:11,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:51:11,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:51:11,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:51:11,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:51:11,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:51:11,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:11" (1/1) ... [2022-11-23 14:51:11,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eaaf2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:11, skipping insertion in model container [2022-11-23 14:51:11,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:11" (1/1) ... [2022-11-23 14:51:11,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:51:11,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:51:12,151 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_d4e91c3d-1f79-43dd-91ca-395322696b2a/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c[19262,19275] [2022-11-23 14:51:12,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:51:12,174 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:51:12,288 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_d4e91c3d-1f79-43dd-91ca-395322696b2a/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c[19262,19275] [2022-11-23 14:51:12,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:51:12,309 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:51:12,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12 WrapperNode [2022-11-23 14:51:12,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:51:12,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:51:12,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:51:12,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:51:12,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,479 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2314 [2022-11-23 14:51:12,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:51:12,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:51:12,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:51:12,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:51:12,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:51:12,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:51:12,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:51:12,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:51:12,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2022-11-23 14:51:12,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:51:12,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:51:12,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:51:12,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:51:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 14:51:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 14:51:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 14:51:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 14:51:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 14:51:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 14:51:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:51:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 14:51:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 14:51:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:51:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:51:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:51:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:51:12,945 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:51:13,331 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:51:13,344 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:51:15,957 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:51:18,999 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:51:19,000 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-23 14:51:19,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:19 BoogieIcfgContainer [2022-11-23 14:51:19,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:51:19,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:51:19,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:51:19,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:51:19,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:51:11" (1/3) ... [2022-11-23 14:51:19,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22910ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:19, skipping insertion in model container [2022-11-23 14:51:19,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (2/3) ... [2022-11-23 14:51:19,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22910ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:19, skipping insertion in model container [2022-11-23 14:51:19,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:19" (3/3) ... [2022-11-23 14:51:19,013 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-subst.wvr.c [2022-11-23 14:51:19,024 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 14:51:19,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:51:19,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:51:19,035 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:51:19,521 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 14:51:19,563 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:51:19,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 671 places, 740 transitions, 1504 flow [2022-11-23 14:51:19,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 671 places, 740 transitions, 1504 flow [2022-11-23 14:51:19,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 671 places, 740 transitions, 1504 flow [2022-11-23 14:51:19,886 INFO L130 PetriNetUnfolder]: 79/737 cut-off events. [2022-11-23 14:51:19,889 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 14:51:19,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 737 events. 79/737 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 763 event pairs, 0 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 662. Up to 7 conditions per place. [2022-11-23 14:51:19,913 INFO L119 LiptonReduction]: Number of co-enabled transitions 16638 [2022-11-23 14:53:14,066 INFO L134 LiptonReduction]: Checked pairs total: 17133 [2022-11-23 14:53:14,066 INFO L136 LiptonReduction]: Total number of compositions: 866 [2022-11-23 14:53:14,075 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 62 transitions, 148 flow [2022-11-23 14:53:14,127 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 224 states, 223 states have (on average 4.914798206278027) internal successors, (1096), 223 states have internal predecessors, (1096), 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) [2022-11-23 14:53:14,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:53:14,158 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;@48150a94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:53:14,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 14:53:14,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 223 states have (on average 4.914798206278027) internal successors, (1096), 223 states have internal predecessors, (1096), 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) [2022-11-23 14:53:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 14:53:14,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:14,181 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:14,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:53:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:14,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1795715628, now seen corresponding path program 1 times [2022-11-23 14:53:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:14,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267495002] [2022-11-23 14:53:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:53:15,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267495002] [2022-11-23 14:53:15,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267495002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:15,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:15,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:53:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722185536] [2022-11-23 14:53:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:15,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:15,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:15,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:15,245 INFO L87 Difference]: Start difference. First operand has 224 states, 223 states have (on average 4.914798206278027) internal successors, (1096), 223 states have internal predecessors, (1096), 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, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-11-23 14:53:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:15,534 INFO L93 Difference]: Finished difference Result 227 states and 1099 transitions. [2022-11-23 14:53:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:15,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2022-11-23 14:53:15,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:15,553 INFO L225 Difference]: With dead ends: 227 [2022-11-23 14:53:15,554 INFO L226 Difference]: Without dead ends: 227 [2022-11-23 14:53:15,555 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 [2022-11-23 14:53:15,559 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:15,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:53:15,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-23 14:53:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-23 14:53:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 4.8628318584070795) internal successors, (1099), 226 states have internal predecessors, (1099), 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) [2022-11-23 14:53:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 1099 transitions. [2022-11-23 14:53:15,662 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 1099 transitions. Word has length 28 [2022-11-23 14:53:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:15,663 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 1099 transitions. [2022-11-23 14:53:15,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-11-23 14:53:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 1099 transitions. [2022-11-23 14:53:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 14:53:15,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:15,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:15,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:53:15,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:53:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1560606375, now seen corresponding path program 1 times [2022-11-23 14:53:15,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:15,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631801321] [2022-11-23 14:53:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:15,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 14:53:16,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:16,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631801321] [2022-11-23 14:53:16,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631801321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:16,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:16,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:16,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184777390] [2022-11-23 14:53:16,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:16,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:16,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:16,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:16,213 INFO L87 Difference]: Start difference. First operand 227 states and 1099 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-11-23 14:53:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:16,433 INFO L93 Difference]: Finished difference Result 230 states and 1102 transitions. [2022-11-23 14:53:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:16,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2022-11-23 14:53:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:16,437 INFO L225 Difference]: With dead ends: 230 [2022-11-23 14:53:16,437 INFO L226 Difference]: Without dead ends: 230 [2022-11-23 14:53:16,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:16,439 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:16,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:53:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-23 14:53:16,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-23 14:53:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 4.812227074235808) internal successors, (1102), 229 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:53:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 1102 transitions. [2022-11-23 14:53:16,456 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 1102 transitions. Word has length 31 [2022-11-23 14:53:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:16,456 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 1102 transitions. [2022-11-23 14:53:16,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-11-23 14:53:16,457 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 1102 transitions. [2022-11-23 14:53:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 14:53:16,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:16,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:16,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:53:16,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:53:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1021269616, now seen corresponding path program 1 times [2022-11-23 14:53:16,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:16,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640230539] [2022-11-23 14:53:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:16,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:53:16,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640230539] [2022-11-23 14:53:16,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640230539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:16,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:16,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:16,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647469054] [2022-11-23 14:53:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:16,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:16,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:16,848 INFO L87 Difference]: Start difference. First operand 230 states and 1102 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-11-23 14:53:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:17,069 INFO L93 Difference]: Finished difference Result 236 states and 1108 transitions. [2022-11-23 14:53:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:17,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2022-11-23 14:53:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:17,072 INFO L225 Difference]: With dead ends: 236 [2022-11-23 14:53:17,072 INFO L226 Difference]: Without dead ends: 236 [2022-11-23 14:53:17,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:17,074 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:17,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:53:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-23 14:53:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-23 14:53:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 4.714893617021277) internal successors, (1108), 235 states have internal predecessors, (1108), 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) [2022-11-23 14:53:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 1108 transitions. [2022-11-23 14:53:17,088 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 1108 transitions. Word has length 34 [2022-11-23 14:53:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:17,089 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 1108 transitions. [2022-11-23 14:53:17,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-11-23 14:53:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 1108 transitions. [2022-11-23 14:53:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 14:53:17,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:17,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:17,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:53:17,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:53:17,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1064534077, now seen corresponding path program 1 times [2022-11-23 14:53:17,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:17,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185819628] [2022-11-23 14:53:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:17,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 14:53:17,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:17,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185819628] [2022-11-23 14:53:17,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185819628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:53:17,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60569933] [2022-11-23 14:53:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:17,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:53:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:53:17,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:53:17,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:53:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:18,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:53:18,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:53:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 14:53:18,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:53:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 14:53:18,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60569933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:53:18,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2102617473] [2022-11-23 14:53:18,836 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgJoinThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 14:53:18,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:53:18,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-23 14:53:18,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431532857] [2022-11-23 14:53:18,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:53:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:53:18,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:53:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:53:18,842 INFO L87 Difference]: Start difference. First operand 236 states and 1108 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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) [2022-11-23 14:53:19,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:19,176 INFO L93 Difference]: Finished difference Result 260 states and 1132 transitions. [2022-11-23 14:53:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:53:19,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 40 [2022-11-23 14:53:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:19,179 INFO L225 Difference]: With dead ends: 260 [2022-11-23 14:53:19,179 INFO L226 Difference]: Without dead ends: 260 [2022-11-23 14:53:19,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:53:19,180 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:19,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:53:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-23 14:53:19,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2022-11-23 14:53:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 4.370656370656371) internal successors, (1132), 259 states have internal predecessors, (1132), 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) [2022-11-23 14:53:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 1132 transitions. [2022-11-23 14:53:19,198 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 1132 transitions. Word has length 40 [2022-11-23 14:53:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:19,198 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 1132 transitions. [2022-11-23 14:53:19,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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) [2022-11-23 14:53:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 1132 transitions. [2022-11-23 14:53:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 14:53:19,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:19,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:19,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:53:19,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:53:19,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:53:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1203421452, now seen corresponding path program 2 times [2022-11-23 14:53:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:19,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9187059] [2022-11-23 14:53:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:19,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-23 14:53:20,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:20,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9187059] [2022-11-23 14:53:20,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9187059] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:53:20,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239414947] [2022-11-23 14:53:20,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:53:20,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:53:20,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:53:20,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:53:20,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4e91c3d-1f79-43dd-91ca-395322696b2a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:53:21,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 14:53:21,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:53:21,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 14:53:21,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:53:23,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:53:23,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:53:23,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:53:23,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:53:24,030 INFO L321 Elim1Store]: treesize reduction 132, result has 17.0 percent of original size [2022-11-23 14:53:24,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 450 treesize of output 415 [2022-11-23 14:53:24,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-11-23 14:53:24,884 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:53:24,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2022-11-23 14:53:25,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-23 14:53:28,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:53:28,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:53:28,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:53:28,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:53:28,152 INFO L321 Elim1Store]: treesize reduction 132, result has 17.0 percent of original size [2022-11-23 14:53:28,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 801 treesize of output 718 [2022-11-23 14:53:29,060 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:53:29,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2022-11-23 14:53:30,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-23 14:53:30,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 786 treesize of output 778 [2022-11-23 14:56:38,205 WARN L233 SmtUtils]: Spent 2.99m on a formula simplification. DAG size of input: 269 DAG size of output: 237 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)