./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/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_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/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_dcb41de1-23c0-4436-ae5a-100159679071/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 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb --- 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 15:45:50,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:45:50,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:45:51,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:45:51,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:45:51,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:45:51,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:45:51,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:45:51,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:45:51,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:45:51,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:45:51,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:45:51,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:45:51,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:45:51,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:45:51,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:45:51,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:45:51,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:45:51,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:45:51,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:45:51,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:45:51,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:45:51,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:45:51,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:45:51,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:45:51,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:45:51,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:45:51,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:45:51,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:45:51,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:45:51,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:45:51,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:45:51,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:45:51,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:45:51,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:45:51,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:45:51,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:45:51,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:45:51,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:45:51,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:45:51,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:45:51,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:45:51,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:45:51,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:45:51,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:45:51,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:45:51,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:45:51,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:45:51,145 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:45:51,145 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:45:51,145 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:45:51,145 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:45:51,146 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:45:51,147 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:45:51,147 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:45:51,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:45:51,147 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:45:51,147 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:45:51,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:45:51,148 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:45:51,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:45:51,149 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:45:51,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:45:51,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:45:51,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:45:51,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:45:51,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:45:51,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:45:51,150 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:45:51,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:45:51,151 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:45:51,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:45:51,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:45:51,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:45:51,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:51,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:45:51,152 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:45:51,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:45:51,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:45:51,153 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:45:51,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:45:51,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:45:51,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:45:51,154 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_dcb41de1-23c0-4436-ae5a-100159679071/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb [2022-11-23 15:45:51,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:45:51,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:45:51,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:45:51,481 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:45:51,482 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:45:51,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2022-11-23 15:45:54,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:45:55,015 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:45:55,015 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2022-11-23 15:45:55,050 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/data/5f12a6f6f/f46f2117bce345e7bd70abb3ab5f2eb7/FLAGb8f7992fc [2022-11-23 15:45:55,074 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/data/5f12a6f6f/f46f2117bce345e7bd70abb3ab5f2eb7 [2022-11-23 15:45:55,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:45:55,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:45:55,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:55,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:45:55,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:45:55,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:55,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6500652a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55, skipping insertion in model container [2022-11-23 15:45:55,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:55,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:45:55,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:45:55,421 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_dcb41de1-23c0-4436-ae5a-100159679071/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2022-11-23 15:45:55,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:55,707 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:45:55,745 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_dcb41de1-23c0-4436-ae5a-100159679071/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2022-11-23 15:45:55,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:55,878 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:45:55,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55 WrapperNode [2022-11-23 15:45:55,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:55,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:55,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:45:55,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:45:55,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:55,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:55,967 INFO L138 Inliner]: procedures = 97, calls = 350, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 955 [2022-11-23 15:45:55,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:55,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:45:55,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:45:55,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:45:55,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:55,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:55,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:55,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:56,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:56,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:56,025 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:56,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:56,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:45:56,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:45:56,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:45:56,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:45:56,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (1/1) ... [2022-11-23 15:45:56,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:56,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:56,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:45:56,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:45:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-23 15:45:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-23 15:45:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-23 15:45:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-23 15:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-23 15:45:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-23 15:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-23 15:45:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-23 15:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:45:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-23 15:45:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-23 15:45:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-23 15:45:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-23 15:45:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-23 15:45:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-23 15:45:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-23 15:45:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-23 15:45:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-23 15:45:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-23 15:45:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-23 15:45:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-23 15:45:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-23 15:45:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-23 15:45:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:45:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-23 15:45:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-23 15:45:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-23 15:45:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-23 15:45:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-23 15:45:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-23 15:45:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-23 15:45:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-23 15:45:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:45:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:45:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-23 15:45:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-23 15:45:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-23 15:45:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-23 15:45:56,134 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-23 15:45:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-23 15:45:56,134 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-23 15:45:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-23 15:45:56,134 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-23 15:45:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-23 15:45:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-23 15:45:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-23 15:45:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-23 15:45:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-23 15:45:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-23 15:45:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-23 15:45:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:45:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-23 15:45:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-23 15:45:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:45:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:45:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-23 15:45:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-23 15:45:56,301 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:45:56,304 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:45:57,759 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:45:58,610 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:45:58,610 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:45:58,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:58 BoogieIcfgContainer [2022-11-23 15:45:58,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:45:58,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:45:58,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:45:58,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:45:58,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:55" (1/3) ... [2022-11-23 15:45:58,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24504eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:58, skipping insertion in model container [2022-11-23 15:45:58,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:55" (2/3) ... [2022-11-23 15:45:58,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24504eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:58, skipping insertion in model container [2022-11-23 15:45:58,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:58" (3/3) ... [2022-11-23 15:45:58,631 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2022-11-23 15:45:58,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:45:58,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:45:58,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:45:58,740 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;@288933c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:45:58,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:45:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-23 15:45:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 15:45:58,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:58,772 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:58,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:58,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:58,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2066510140, now seen corresponding path program 1 times [2022-11-23 15:45:58,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:58,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421879082] [2022-11-23 15:45:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:45:59,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:59,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421879082] [2022-11-23 15:45:59,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421879082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:59,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:59,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:45:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030697266] [2022-11-23 15:45:59,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:59,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:45:59,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:45:59,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:45:59,411 INFO L87 Difference]: Start difference. First operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-23 15:45:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:59,603 INFO L93 Difference]: Finished difference Result 422 states and 661 transitions. [2022-11-23 15:45:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:45:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2022-11-23 15:45:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:59,625 INFO L225 Difference]: With dead ends: 422 [2022-11-23 15:45:59,625 INFO L226 Difference]: Without dead ends: 400 [2022-11-23 15:45:59,629 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 [2022-11-23 15:45:59,633 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:59,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-23 15:45:59,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-11-23 15:45:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 287 states have internal predecessors, (418), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-23 15:45:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 623 transitions. [2022-11-23 15:45:59,718 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 623 transitions. Word has length 88 [2022-11-23 15:45:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:59,720 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 623 transitions. [2022-11-23 15:45:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-23 15:45:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 623 transitions. [2022-11-23 15:45:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 15:45:59,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:59,728 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:59,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:45:59,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1438810213, now seen corresponding path program 1 times [2022-11-23 15:45:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:59,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042287053] [2022-11-23 15:45:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:59,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:46:00,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042287053] [2022-11-23 15:46:00,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042287053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:00,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:46:00,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 15:46:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214154526] [2022-11-23 15:46:00,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:00,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:46:00,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:00,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:46:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:46:00,427 INFO L87 Difference]: Start difference. First operand 400 states and 623 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-23 15:46:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:03,076 INFO L93 Difference]: Finished difference Result 1217 states and 1930 transitions. [2022-11-23 15:46:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:46:03,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2022-11-23 15:46:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:03,093 INFO L225 Difference]: With dead ends: 1217 [2022-11-23 15:46:03,093 INFO L226 Difference]: Without dead ends: 840 [2022-11-23 15:46:03,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:46:03,107 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1216 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:03,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1608 Invalid, 3159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [457 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 15:46:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-23 15:46:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2022-11-23 15:46:03,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 540 states have (on average 1.5740740740740742) internal successors, (850), 573 states have internal predecessors, (850), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-11-23 15:46:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1253 transitions. [2022-11-23 15:46:03,230 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1253 transitions. Word has length 89 [2022-11-23 15:46:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:03,233 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1253 transitions. [2022-11-23 15:46:03,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-23 15:46:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1253 transitions. [2022-11-23 15:46:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 15:46:03,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:03,244 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:03,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:46:03,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash 228903843, now seen corresponding path program 1 times [2022-11-23 15:46:03,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:03,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706017128] [2022-11-23 15:46:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:46:03,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:03,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706017128] [2022-11-23 15:46:03,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706017128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:03,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:46:03,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:46:03,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698287859] [2022-11-23 15:46:03,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:46:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:46:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:46:03,722 INFO L87 Difference]: Start difference. First operand 791 states and 1253 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:46:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:04,348 INFO L93 Difference]: Finished difference Result 862 states and 1365 transitions. [2022-11-23 15:46:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:46:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-11-23 15:46:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:04,358 INFO L225 Difference]: With dead ends: 862 [2022-11-23 15:46:04,358 INFO L226 Difference]: Without dead ends: 847 [2022-11-23 15:46:04,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:46:04,368 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 716 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:04,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1547 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:46:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-23 15:46:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 795. [2022-11-23 15:46:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5698529411764706) internal successors, (854), 577 states have internal predecessors, (854), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-11-23 15:46:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1257 transitions. [2022-11-23 15:46:04,455 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1257 transitions. Word has length 93 [2022-11-23 15:46:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:04,458 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1257 transitions. [2022-11-23 15:46:04,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:46:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1257 transitions. [2022-11-23 15:46:04,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 15:46:04,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:04,463 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:04,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:46:04,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:04,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1654676781, now seen corresponding path program 1 times [2022-11-23 15:46:04,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:04,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438403319] [2022-11-23 15:46:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:04,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:46:05,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:05,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438403319] [2022-11-23 15:46:05,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438403319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:05,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:46:05,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:46:05,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624905019] [2022-11-23 15:46:05,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:05,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:46:05,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:46:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:46:05,016 INFO L87 Difference]: Start difference. First operand 795 states and 1257 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-23 15:46:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:05,229 INFO L93 Difference]: Finished difference Result 814 states and 1281 transitions. [2022-11-23 15:46:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:46:05,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2022-11-23 15:46:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:05,236 INFO L225 Difference]: With dead ends: 814 [2022-11-23 15:46:05,236 INFO L226 Difference]: Without dead ends: 799 [2022-11-23 15:46:05,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:46:05,238 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 41 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:05,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2889 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:46:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-23 15:46:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 795. [2022-11-23 15:46:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5661764705882353) internal successors, (852), 577 states have internal predecessors, (852), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-11-23 15:46:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1255 transitions. [2022-11-23 15:46:05,294 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1255 transitions. Word has length 98 [2022-11-23 15:46:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:05,295 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1255 transitions. [2022-11-23 15:46:05,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-23 15:46:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1255 transitions. [2022-11-23 15:46:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 15:46:05,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:05,299 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:05,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:46:05,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1277274216, now seen corresponding path program 1 times [2022-11-23 15:46:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:05,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905880326] [2022-11-23 15:46:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:46:11,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:11,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905880326] [2022-11-23 15:46:11,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905880326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:46:11,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639390177] [2022-11-23 15:46:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:11,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:46:11,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:46:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:46:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:11,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 15:46:11,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:46:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:46:12,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:46:12,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639390177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:12,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:46:12,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [30] total 32 [2022-11-23 15:46:12,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176068804] [2022-11-23 15:46:12,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:12,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:46:12,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:12,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:46:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2022-11-23 15:46:12,145 INFO L87 Difference]: Start difference. First operand 795 states and 1255 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-23 15:46:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:12,404 INFO L93 Difference]: Finished difference Result 878 states and 1379 transitions. [2022-11-23 15:46:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:46:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2022-11-23 15:46:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:12,412 INFO L225 Difference]: With dead ends: 878 [2022-11-23 15:46:12,413 INFO L226 Difference]: Without dead ends: 863 [2022-11-23 15:46:12,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 15:46:12,417 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 44 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:12,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1816 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:46:12,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-23 15:46:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 799. [2022-11-23 15:46:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 548 states have (on average 1.562043795620438) internal successors, (856), 581 states have internal predecessors, (856), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-11-23 15:46:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1259 transitions. [2022-11-23 15:46:12,480 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1259 transitions. Word has length 105 [2022-11-23 15:46:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:12,480 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1259 transitions. [2022-11-23 15:46:12,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-23 15:46:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1259 transitions. [2022-11-23 15:46:12,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 15:46:12,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:12,485 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:12,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:46:12,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:12,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:12,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1797913455, now seen corresponding path program 1 times [2022-11-23 15:46:12,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:12,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792102946] [2022-11-23 15:46:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 15:46:14,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:14,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792102946] [2022-11-23 15:46:14,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792102946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:46:14,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432692083] [2022-11-23 15:46:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:14,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:14,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:46:14,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:46:14,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:46:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:15,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-23 15:46:15,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:46:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 15:46:15,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:07,782 WARN L233 SmtUtils]: Spent 49.51s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 15:47:57,754 WARN L233 SmtUtils]: Spent 49.27s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 15:47:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 15:47:58,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432692083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:58,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [364632228] [2022-11-23 15:47:58,549 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-11-23 15:47:58,549 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:47:58,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:47:58,559 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:47:58,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:48:06,843 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 435 for LOIs [2022-11-23 15:48:06,931 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-11-23 15:48:10,235 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2022-11-23 15:48:19,904 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2022-11-23 15:48:22,654 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 501 for LOIs [2022-11-23 15:48:24,853 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 55 for LOIs [2022-11-23 15:48:24,870 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 73 for LOIs [2022-11-23 15:48:24,876 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-11-23 15:48:29,237 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 31 for LOIs [2022-11-23 15:48:29,240 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2022-11-23 15:48:30,280 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2022-11-23 15:48:30,363 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-11-23 15:48:33,456 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-11-23 15:49:14,140 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-11-23 15:49:14,685 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:49:38,024 WARN L233 SmtUtils]: Spent 12.33s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:49:50,177 WARN L233 SmtUtils]: Spent 11.64s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:49:59,089 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:50:08,431 WARN L233 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:50:21,660 WARN L233 SmtUtils]: Spent 12.45s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:50:43,172 WARN L233 SmtUtils]: Spent 19.88s on a formula simplification. DAG size of input: 961 DAG size of output: 797 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:50:59,100 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 564 DAG size of output: 559 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:05,026 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 564 DAG size of output: 559 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:22,452 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 501 DAG size of output: 470 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:31,042 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 628 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:37,963 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 628 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:45,123 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 630 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:53,195 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 634 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:00,409 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 632 DAG size of output: 606 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:07,735 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 638 DAG size of output: 610 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:15,449 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 643 DAG size of output: 612 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:23,441 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 642 DAG size of output: 612 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:53:04,412 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 653 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:53:12,603 WARN L233 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 653 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:54:14,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12532#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= (select (select |#memory_int| 28) 2) 105) (= 32 (select (select |#memory_int| 28) 0)) (= 30 (select |#length| 7)) (= (select |#valid| 30) 1) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 31) 2) 105) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 34) 2) 105) (= 32 (select (select |#memory_int| 34) 0)) (= ~floorButtons_3~0 0) (= 10 (select |#length| 16)) (= (select |#length| 33) 4) (= (select |#valid| 26) 1) (<= ~currentHeading~0 1) (= (select (select |#memory_int| 26) 3) 0) (= (select (select |#memory_int| 20) 2) 0) (= 3 (select |#length| 20)) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= (select (select |#memory_int| 24) 1) 73) (= (select (select |#memory_int| 23) 3) 110) (= 91 (select (select |#memory_int| 18) 0)) (= (select |#length| 12) 25) (= (select (select |#memory_int| 25) 3) 0) (= 91 (select (select |#memory_int| 17) 0)) (= (select (select |#memory_int| 30) 4) 58) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= (select |#valid| 33) 1) (= (select (select |#memory_int| 32) 2) 105) (= 30 (select |#length| 4)) (= (select (select |#memory_int| 29) 2) 105) (= (select |#length| 28) 4) (= 4 (select |#length| 31)) (= (select |#length| 27) 4) (= (select |#length| 22) 3) (<= ~currentFloorID~0 2147483647) (= ~calls_3~0 0) (= 4 (select |#length| 26)) (= 6 (select |#length| 30)) (= ~calls_0~0 0) (= 112 (select (select |#memory_int| 22) 1)) (= (select (select |#memory_int| 17) 2) 93) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 27) 3) 0) (= 76 (select (select |#memory_int| 24) 2)) (= ~head~0.offset 0) (= (select (select |#memory_int| 32) 3) 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select (select |#memory_int| 28) 3) 0) (= (select (select |#memory_int| 29) 3) 0) (= 95 (select (select |#memory_int| 30) 2)) (= 32 (select (select |#memory_int| 30) 0)) (= (select (select |#memory_int| 30) 1) 70) (= 4 (select |#length| 25)) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select |#valid| 18) 1) (= ~calls_1~0 0) (= (select |#valid| 22) 1) (= 30 (select |#length| 13)) (= (select (select |#memory_int| 18) 3) 0) (= 2 (select |#length| 36)) (= (select (select |#memory_int| 26) 2) 105) (= (select (select |#memory_int| 34) 1) 37) (= (select (select |#memory_int| 19) 4) 0) (= (select |#valid| 24) 1) (= 30 (select |#length| 10)) (= (select (select |#memory_int| 29) 1) 37) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 25) 1) 37) (= (select (select |#memory_int| 17) 3) 0) (= 4 (select |#length| 34)) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select (select |#memory_int| 31) 1) 37) (= ~floorButtons_2~0 0) (= (select |#valid| 28) 1) (= (select (select |#memory_int| 18) 2) 32) (= (select (select |#memory_int| 25) 2) 105) (= (select |#length| 17) 4) (= (select (select |#memory_int| 27) 1) 37) (= (select |#length| 35) 4) (= (select |#valid| 4) 1) (= 5 (select |#length| 23)) (= (select (select |#memory_int| 35) 3) 0) (= 119 (select (select |#memory_int| 23) 2)) (= 32 (select (select |#memory_int| 24) 0)) (= 32 (select (select |#memory_int| 26) 0)) (= (select (select |#memory_int| 32) 1) 37) (= (select (select |#memory_int| 28) 1) 37) (= (select (select |#memory_int| 30) 5) 0) (= (select (select |#memory_int| 22) 2) 0) (= (select (select |#memory_int| 20) 1) 105) (= (select (select |#memory_int| 33) 3) 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= 97 (select (select |#memory_int| 19) 1)) (= ~floorButtons_1~0 0) (= 32 (select (select |#memory_int| 35) 0)) (= (select |#length| 6) 21) (= (select (select |#memory_int| 36) 1) 0) (= (select (select |#memory_int| 23) 0) 100) (= (select |#valid| 21) 1) (= 7 (select |#length| 24)) (= 58 (select (select |#memory_int| 24) 5)) (= ~floorButtons_0~0 0) (= (select (select |#memory_int| 24) 6) 0) (= (select (select |#memory_int| 31) 0) 32) (= (select (select |#memory_int| 33) 1) 37) (= 32 (select (select |#memory_int| 27) 0)) (= (select |#valid| 14) 1) (= 95 (select (select |#memory_int| 24) 3)) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 33) 0) 32) (= (select (select |#memory_int| 35) 1) 37) (= (select |#valid| 25) 1) (= 4 (select |#length| 18)) (= ~head~0.base 0) (= (select |#length| 32) 4) (= 112 (select (select |#memory_int| 24) 4)) (= (select (select |#memory_int| 17) 1) 95) (= (select (select |#memory_int| 34) 3) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= 9 (select |#length| 11)) (= (select |#length| 29) 4) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 23) 1) (= 32 (select (select |#memory_int| 29) 0)) (= (select (select |#memory_int| 26) 1) 37) (= 112 (select (select |#memory_int| 30) 3)) (<= 0 ~currentHeading~0) (= (select (select |#memory_int| 23) 4) 0) (= (select |#valid| 19) 1) (= 32 (select (select |#memory_int| 19) 3)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 33) 2) 105) (= (select (select |#memory_int| 27) 2) 105) (= (select |#valid| 16) 1) (= 111 (select (select |#memory_int| 23) 1)) (= 116 (select (select |#memory_int| 19) 2)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 20) 0) 37) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_int| 36) 0) 10) (= ~calls_2~0 0) (= ~calls_4~0 0) (= (select |#valid| 29) 1) (= (select (select |#memory_int| 22) 0) 117) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 25) 0) 32) (= (select (select |#memory_int| 31) 3) 0) (= (select |#length| 21) 10) (= (select |#valid| 17) 1) (= 93 (select (select |#memory_int| 18) 1)) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= 32 (select (select |#memory_int| 19) 0)) (= (select |#length| 19) 5) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select (select |#memory_int| 35) 2) 105) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 32) 0)))' at error location [2022-11-23 15:54:14,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:54:14,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:54:14,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 32 [2022-11-23 15:54:14,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833818529] [2022-11-23 15:54:14,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:54:14,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 15:54:14,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:54:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 15:54:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=12426, Unknown=0, NotChecked=0, Total=13572 [2022-11-23 15:54:14,491 INFO L87 Difference]: Start difference. First operand 799 states and 1259 transitions. Second operand has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) [2022-11-23 15:54:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:54:36,842 INFO L93 Difference]: Finished difference Result 4480 states and 7162 transitions. [2022-11-23 15:54:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-23 15:54:36,843 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) Word has length 128 [2022-11-23 15:54:36,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:54:36,868 INFO L225 Difference]: With dead ends: 4480 [2022-11-23 15:54:36,868 INFO L226 Difference]: Without dead ends: 3710 [2022-11-23 15:54:36,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 301 SyntacticMatches, 4 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13031 ImplicationChecksByTransitivity, 305.3s TimeCoverageRelationStatistics Valid=2506, Invalid=31166, Unknown=0, NotChecked=0, Total=33672 [2022-11-23 15:54:36,882 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 6249 mSDsluCounter, 8158 mSDsCounter, 0 mSdLazyCounter, 23298 mSolverCounterSat, 3721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6297 SdHoareTripleChecker+Valid, 8827 SdHoareTripleChecker+Invalid, 27019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3721 IncrementalHoareTripleChecker+Valid, 23298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:54:36,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6297 Valid, 8827 Invalid, 27019 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3721 Valid, 23298 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2022-11-23 15:54:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-11-23 15:54:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3047. [2022-11-23 15:54:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3047 states, 2129 states have (on average 1.5570690465007047) internal successors, (3315), 2245 states have internal predecessors, (3315), 718 states have call successors, (718), 184 states have call predecessors, (718), 199 states have return successors, (767), 697 states have call predecessors, (767), 713 states have call successors, (767) [2022-11-23 15:54:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3047 states to 3047 states and 4800 transitions. [2022-11-23 15:54:37,201 INFO L78 Accepts]: Start accepts. Automaton has 3047 states and 4800 transitions. Word has length 128 [2022-11-23 15:54:37,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:54:37,202 INFO L495 AbstractCegarLoop]: Abstraction has 3047 states and 4800 transitions. [2022-11-23 15:54:37,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) [2022-11-23 15:54:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3047 states and 4800 transitions. [2022-11-23 15:54:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-23 15:54:37,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:54:37,223 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 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 15:54:37,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:54:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 15:54:37,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:54:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:54:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1511005029, now seen corresponding path program 1 times [2022-11-23 15:54:37,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:54:37,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566770835] [2022-11-23 15:54:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:54:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:54:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:54:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-23 15:54:37,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:54:37,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566770835] [2022-11-23 15:54:37,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566770835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:54:37,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437701783] [2022-11-23 15:54:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:54:37,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:54:37,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:54:37,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:54:37,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:54:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:54:38,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:54:38,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:54:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-23 15:54:38,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:54:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-23 15:54:39,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437701783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:54:39,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1848804543] [2022-11-23 15:54:39,179 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-23 15:54:39,179 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:54:39,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:54:39,180 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:54:39,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:54:47,826 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 412 for LOIs [2022-11-23 15:54:47,885 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-11-23 15:54:55,891 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 693 for LOIs [2022-11-23 15:55:02,046 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 40 for LOIs [2022-11-23 15:55:02,164 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 27 for LOIs [2022-11-23 15:55:02,191 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 54 for LOIs [2022-11-23 15:55:02,217 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 53 for LOIs [2022-11-23 15:55:02,251 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-11-23 15:55:06,620 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 27 for LOIs [2022-11-23 15:55:06,622 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 50 for LOIs [2022-11-23 15:55:06,694 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 46 for LOIs [2022-11-23 15:55:06,698 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-11-23 15:55:09,789 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-11-23 15:55:19,363 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-11-23 15:55:19,979 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:55:42,317 WARN L233 SmtUtils]: Spent 11.91s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:54,839 WARN L233 SmtUtils]: Spent 12.23s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:03,030 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:11,224 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:22,561 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:41,468 WARN L233 SmtUtils]: Spent 18.45s on a formula simplification. DAG size of input: 901 DAG size of output: 809 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:57:15,159 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 693 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:57:50,433 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24297#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= (select (select |#memory_int| 28) 2) 105) (= 32 (select (select |#memory_int| 28) 0)) (= 30 (select |#length| 7)) (= (select |#valid| 30) 1) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 31) 2) 105) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 34) 2) 105) (= 32 (select (select |#memory_int| 34) 0)) (= 10 (select |#length| 16)) (= (select |#length| 33) 4) (= (select |#valid| 26) 1) (= (select (select |#memory_int| 26) 3) 0) (= (select (select |#memory_int| 20) 2) 0) (= 3 (select |#length| 20)) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= (select (select |#memory_int| 24) 1) 73) (= (select (select |#memory_int| 23) 3) 110) (= 91 (select (select |#memory_int| 18) 0)) (= (select |#length| 12) 25) (= (select (select |#memory_int| 25) 3) 0) (= 91 (select (select |#memory_int| 17) 0)) (= (select (select |#memory_int| 30) 4) 58) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= (select |#valid| 33) 1) (= (select (select |#memory_int| 32) 2) 105) (= 30 (select |#length| 4)) (= (select (select |#memory_int| 29) 2) 105) (= (select |#length| 28) 4) (= 4 (select |#length| 31)) (= (select |#length| 27) 4) (= (select |#length| 22) 3) (<= ~currentFloorID~0 2147483647) (= 4 (select |#length| 26)) (= 6 (select |#length| 30)) (= 112 (select (select |#memory_int| 22) 1)) (= (select (select |#memory_int| 17) 2) 93) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 27) 3) 0) (= 76 (select (select |#memory_int| 24) 2)) (= ~head~0.offset 0) (= (select (select |#memory_int| 32) 3) 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select (select |#memory_int| 28) 3) 0) (= (select (select |#memory_int| 29) 3) 0) (= 95 (select (select |#memory_int| 30) 2)) (= 32 (select (select |#memory_int| 30) 0)) (= (select (select |#memory_int| 30) 1) 70) (= 4 (select |#length| 25)) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= (select |#valid| 18) 1) (= (select |#valid| 22) 1) (= 30 (select |#length| 13)) (= (select (select |#memory_int| 18) 3) 0) (= 2 (select |#length| 36)) (= (select (select |#memory_int| 26) 2) 105) (= (select (select |#memory_int| 34) 1) 37) (= (select (select |#memory_int| 19) 4) 0) (= (select |#valid| 24) 1) (= 30 (select |#length| 10)) (= (select (select |#memory_int| 29) 1) 37) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 25) 1) 37) (= (select (select |#memory_int| 17) 3) 0) (= 4 (select |#length| 34)) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select (select |#memory_int| 31) 1) 37) (= (select |#valid| 28) 1) (= (select (select |#memory_int| 18) 2) 32) (= (select (select |#memory_int| 25) 2) 105) (= (select |#length| 17) 4) (= (select (select |#memory_int| 27) 1) 37) (= (select |#length| 35) 4) (= (select |#valid| 4) 1) (= 5 (select |#length| 23)) (= (select (select |#memory_int| 35) 3) 0) (= 119 (select (select |#memory_int| 23) 2)) (= 32 (select (select |#memory_int| 24) 0)) (= 32 (select (select |#memory_int| 26) 0)) (= (select (select |#memory_int| 32) 1) 37) (= (select (select |#memory_int| 28) 1) 37) (= (select (select |#memory_int| 30) 5) 0) (= (select (select |#memory_int| 22) 2) 0) (= (select (select |#memory_int| 20) 1) 105) (= (select (select |#memory_int| 33) 3) 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= 97 (select (select |#memory_int| 19) 1)) (= 32 (select (select |#memory_int| 35) 0)) (= (select |#length| 6) 21) (= (select (select |#memory_int| 36) 1) 0) (= (select (select |#memory_int| 23) 0) 100) (= (select |#valid| 21) 1) (= 7 (select |#length| 24)) (= 58 (select (select |#memory_int| 24) 5)) (= (select (select |#memory_int| 24) 6) 0) (= (select (select |#memory_int| 31) 0) 32) (= (select (select |#memory_int| 33) 1) 37) (= 32 (select (select |#memory_int| 27) 0)) (= (select |#valid| 14) 1) (= 95 (select (select |#memory_int| 24) 3)) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 33) 0) 32) (= (select (select |#memory_int| 35) 1) 37) (= (select |#valid| 25) 1) (= 4 (select |#length| 18)) (= ~head~0.base 0) (= (select |#length| 32) 4) (= 112 (select (select |#memory_int| 24) 4)) (= (select (select |#memory_int| 17) 1) 95) (= (select (select |#memory_int| 34) 3) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= 9 (select |#length| 11)) (= (select |#length| 29) 4) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 23) 1) (= 32 (select (select |#memory_int| 29) 0)) (= (select (select |#memory_int| 26) 1) 37) (= 112 (select (select |#memory_int| 30) 3)) (= (select (select |#memory_int| 23) 4) 0) (= (select |#valid| 19) 1) (= 32 (select (select |#memory_int| 19) 3)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 33) 2) 105) (= (select (select |#memory_int| 27) 2) 105) (= (select |#valid| 16) 1) (= 111 (select (select |#memory_int| 23) 1)) (= 116 (select (select |#memory_int| 19) 2)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 20) 0) 37) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_int| 36) 0) 10) (= (select |#valid| 29) 1) (= (select (select |#memory_int| 22) 0) 117) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 25) 0) 32) (= (select (select |#memory_int| 31) 3) 0) (= (select |#length| 21) 10) (= (select |#valid| 17) 1) (= 93 (select (select |#memory_int| 18) 1)) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= 32 (select (select |#memory_int| 19) 0)) (= (select |#length| 19) 5) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select (select |#memory_int| 35) 2) 105) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 32) 0)))' at error location [2022-11-23 15:57:50,433 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:57:50,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:57:50,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 7] total 14 [2022-11-23 15:57:50,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815579172] [2022-11-23 15:57:50,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:57:50,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 15:57:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:57:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 15:57:50,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=662, Invalid=6994, Unknown=0, NotChecked=0, Total=7656 [2022-11-23 15:57:50,438 INFO L87 Difference]: Start difference. First operand 3047 states and 4800 transitions. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 7 states have call successors, (47), 3 states have call predecessors, (47), 4 states have return successors, (46), 7 states have call predecessors, (46), 6 states have call successors, (46) [2022-11-23 15:57:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:57:52,630 INFO L93 Difference]: Finished difference Result 3820 states and 6079 transitions. [2022-11-23 15:57:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:57:52,631 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 7 states have call successors, (47), 3 states have call predecessors, (47), 4 states have return successors, (46), 7 states have call predecessors, (46), 6 states have call successors, (46) Word has length 162 [2022-11-23 15:57:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:57:52,657 INFO L225 Difference]: With dead ends: 3820 [2022-11-23 15:57:52,658 INFO L226 Difference]: Without dead ends: 3801 [2022-11-23 15:57:52,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 400 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 151.2s TimeCoverageRelationStatistics Valid=728, Invalid=8014, Unknown=0, NotChecked=0, Total=8742 [2022-11-23 15:57:52,665 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1359 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:57:52,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 2377 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 15:57:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2022-11-23 15:57:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3590. [2022-11-23 15:57:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 2542 states have (on average 1.518882769472856) internal successors, (3861), 2655 states have internal predecessors, (3861), 848 states have call successors, (848), 184 states have call predecessors, (848), 199 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-11-23 15:57:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 5685 transitions. [2022-11-23 15:57:53,037 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 5685 transitions. Word has length 162 [2022-11-23 15:57:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:57:53,038 INFO L495 AbstractCegarLoop]: Abstraction has 3590 states and 5685 transitions. [2022-11-23 15:57:53,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 7 states have call successors, (47), 3 states have call predecessors, (47), 4 states have return successors, (46), 7 states have call predecessors, (46), 6 states have call successors, (46) [2022-11-23 15:57:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 5685 transitions. [2022-11-23 15:57:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 15:57:53,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:57:53,050 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:53,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:57:53,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 15:57:53,258 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:57:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:57:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash 138189079, now seen corresponding path program 1 times [2022-11-23 15:57:53,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:57:53,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636430384] [2022-11-23 15:57:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:53,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:57:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-23 15:57:53,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:57:53,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636430384] [2022-11-23 15:57:53,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636430384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:57:53,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:57:53,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:57:53,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527498903] [2022-11-23 15:57:53,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:57:53,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:57:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:57:53,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:57:53,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:57:53,457 INFO L87 Difference]: Start difference. First operand 3590 states and 5685 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 15:57:53,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:57:53,913 INFO L93 Difference]: Finished difference Result 6491 states and 10498 transitions. [2022-11-23 15:57:53,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:57:53,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 159 [2022-11-23 15:57:53,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:57:53,946 INFO L225 Difference]: With dead ends: 6491 [2022-11-23 15:57:53,947 INFO L226 Difference]: Without dead ends: 3999 [2022-11-23 15:57:53,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:57:53,968 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 123 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:57:53,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1792 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:57:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2022-11-23 15:57:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3608. [2022-11-23 15:57:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 2560 states have (on average 1.515234375) internal successors, (3879), 2673 states have internal predecessors, (3879), 848 states have call successors, (848), 184 states have call predecessors, (848), 199 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-11-23 15:57:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 5703 transitions. [2022-11-23 15:57:54,310 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 5703 transitions. Word has length 159 [2022-11-23 15:57:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:57:54,311 INFO L495 AbstractCegarLoop]: Abstraction has 3608 states and 5703 transitions. [2022-11-23 15:57:54,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 15:57:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 5703 transitions. [2022-11-23 15:57:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-23 15:57:54,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:57:54,321 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:54,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:57:54,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:57:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:57:54,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1374141392, now seen corresponding path program 1 times [2022-11-23 15:57:54,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:57:54,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400668966] [2022-11-23 15:57:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:54,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:57:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-23 15:57:54,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:57:54,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400668966] [2022-11-23 15:57:54,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400668966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:57:54,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803447429] [2022-11-23 15:57:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:54,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:57:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:57:54,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:57:54,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:57:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:55,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:57:55,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:57:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-23 15:57:55,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:57:55,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803447429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:57:55,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:57:55,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-23 15:57:55,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942406374] [2022-11-23 15:57:55,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:57:55,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:57:55,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:57:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:57:55,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:57:55,160 INFO L87 Difference]: Start difference. First operand 3608 states and 5703 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:57:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:57:55,762 INFO L93 Difference]: Finished difference Result 6153 states and 9904 transitions. [2022-11-23 15:57:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:57:55,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 166 [2022-11-23 15:57:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:57:55,793 INFO L225 Difference]: With dead ends: 6153 [2022-11-23 15:57:55,794 INFO L226 Difference]: Without dead ends: 3803 [2022-11-23 15:57:55,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:57:55,813 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 213 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:57:55,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1533 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:57:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2022-11-23 15:57:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3803. [2022-11-23 15:57:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 2750 states have (on average 1.5432727272727274) internal successors, (4244), 2863 states have internal predecessors, (4244), 848 states have call successors, (848), 189 states have call predecessors, (848), 204 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-11-23 15:57:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6068 transitions. [2022-11-23 15:57:56,210 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6068 transitions. Word has length 166 [2022-11-23 15:57:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:57:56,212 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 6068 transitions. [2022-11-23 15:57:56,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:57:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6068 transitions. [2022-11-23 15:57:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-23 15:57:56,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:57:56,225 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:56,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:57:56,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:57:56,434 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:57:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:57:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1389898326, now seen corresponding path program 1 times [2022-11-23 15:57:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:57:56,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806616073] [2022-11-23 15:57:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:56,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:57:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-23 15:57:56,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:57:56,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806616073] [2022-11-23 15:57:56,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806616073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:57:56,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873551256] [2022-11-23 15:57:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:56,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:57:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:57:56,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:57:56,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:57:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:57,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:57:57,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:57:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-23 15:57:57,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:57:57,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873551256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:57:57,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:57:57,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-23 15:57:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784858692] [2022-11-23 15:57:57,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:57:57,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:57:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:57:57,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:57:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:57:57,100 INFO L87 Difference]: Start difference. First operand 3803 states and 6068 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:57:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:57:57,647 INFO L93 Difference]: Finished difference Result 6543 states and 10629 transitions. [2022-11-23 15:57:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:57:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 171 [2022-11-23 15:57:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:57:57,676 INFO L225 Difference]: With dead ends: 6543 [2022-11-23 15:57:57,676 INFO L226 Difference]: Without dead ends: 3998 [2022-11-23 15:57:57,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:57:57,694 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 211 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:57:57,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1533 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:57:57,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-11-23 15:57:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3998. [2022-11-23 15:57:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 2940 states have (on average 1.567687074829932) internal successors, (4609), 3053 states have internal predecessors, (4609), 848 states have call successors, (848), 194 states have call predecessors, (848), 209 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-11-23 15:57:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6433 transitions. [2022-11-23 15:57:58,091 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6433 transitions. Word has length 171 [2022-11-23 15:57:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:57:58,092 INFO L495 AbstractCegarLoop]: Abstraction has 3998 states and 6433 transitions. [2022-11-23 15:57:58,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:57:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6433 transitions. [2022-11-23 15:57:58,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-23 15:57:58,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:57:58,104 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:58,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:57:58,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:57:58,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:57:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:57:58,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1549229402, now seen corresponding path program 1 times [2022-11-23 15:57:58,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:57:58,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918375778] [2022-11-23 15:57:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:58,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:57:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-23 15:57:58,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:57:58,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918375778] [2022-11-23 15:57:58,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918375778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:57:58,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346854235] [2022-11-23 15:57:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:58,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:57:58,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:57:58,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:57:58,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:57:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:58,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:57:58,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:57:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:57:58,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:57:58,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346854235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:57:58,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:57:58,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-23 15:57:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584780949] [2022-11-23 15:57:58,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:57:58,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:57:58,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:57:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:57:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:57:58,986 INFO L87 Difference]: Start difference. First operand 3998 states and 6433 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:57:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:57:59,516 INFO L93 Difference]: Finished difference Result 6933 states and 11354 transitions. [2022-11-23 15:57:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:57:59,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 175 [2022-11-23 15:57:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:57:59,546 INFO L225 Difference]: With dead ends: 6933 [2022-11-23 15:57:59,546 INFO L226 Difference]: Without dead ends: 4193 [2022-11-23 15:57:59,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:57:59,572 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 209 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:57:59,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1533 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:57:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2022-11-23 15:57:59,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 4193. [2022-11-23 15:57:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4193 states, 3130 states have (on average 1.5891373801916933) internal successors, (4974), 3243 states have internal predecessors, (4974), 848 states have call successors, (848), 199 states have call predecessors, (848), 214 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-11-23 15:57:59,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 6798 transitions. [2022-11-23 15:57:59,910 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 6798 transitions. Word has length 175 [2022-11-23 15:57:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:57:59,911 INFO L495 AbstractCegarLoop]: Abstraction has 4193 states and 6798 transitions. [2022-11-23 15:57:59,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:57:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 6798 transitions. [2022-11-23 15:57:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 15:57:59,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:57:59,923 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:59,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:58:00,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:58:00,132 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:58:00,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 121019408, now seen corresponding path program 1 times [2022-11-23 15:58:00,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:00,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767123864] [2022-11-23 15:58:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-23 15:58:00,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:00,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767123864] [2022-11-23 15:58:00,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767123864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:58:00,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080082790] [2022-11-23 15:58:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:00,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:58:00,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:58:00,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:58:00,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:58:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:00,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:58:00,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:58:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-23 15:58:00,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:58:00,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080082790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:00,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:58:00,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-23 15:58:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758029125] [2022-11-23 15:58:00,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:00,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:58:00,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:58:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:58:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:58:00,863 INFO L87 Difference]: Start difference. First operand 4193 states and 6798 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:58:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:01,413 INFO L93 Difference]: Finished difference Result 7323 states and 12079 transitions. [2022-11-23 15:58:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:58:01,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 178 [2022-11-23 15:58:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:01,451 INFO L225 Difference]: With dead ends: 7323 [2022-11-23 15:58:01,451 INFO L226 Difference]: Without dead ends: 4388 [2022-11-23 15:58:01,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:58:01,471 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 207 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:58:01,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1533 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:58:01,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-11-23 15:58:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4388. [2022-11-23 15:58:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 3320 states have (on average 1.6081325301204819) internal successors, (5339), 3433 states have internal predecessors, (5339), 848 states have call successors, (848), 204 states have call predecessors, (848), 219 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-11-23 15:58:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7163 transitions. [2022-11-23 15:58:01,831 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7163 transitions. Word has length 178 [2022-11-23 15:58:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:01,831 INFO L495 AbstractCegarLoop]: Abstraction has 4388 states and 7163 transitions. [2022-11-23 15:58:01,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:58:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7163 transitions. [2022-11-23 15:58:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-23 15:58:01,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:01,844 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:01,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:58:02,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:58:02,053 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:58:02,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1257278818, now seen corresponding path program 1 times [2022-11-23 15:58:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:02,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563173656] [2022-11-23 15:58:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:02,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-23 15:58:02,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:02,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563173656] [2022-11-23 15:58:02,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563173656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:58:02,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821786849] [2022-11-23 15:58:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:02,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:58:02,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:58:02,523 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:58:02,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb41de1-23c0-4436-ae5a-100159679071/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:58:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:02,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 2053 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-23 15:58:02,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:58:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 71 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-23 15:58:05,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:58:56,235 WARN L233 SmtUtils]: Spent 49.38s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)