./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.01.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_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/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_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/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_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/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 ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe --- 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 15:36:35,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:36:35,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:36:35,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:36:35,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:36:35,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:36:35,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:36:35,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:36:35,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:36:35,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:36:35,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:36:35,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:36:35,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:36:35,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:36:35,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:36:35,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:36:35,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:36:35,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:36:35,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:36:35,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:36:35,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:36:35,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:36:35,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:36:35,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:36:35,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:36:35,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:36:35,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:36:35,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:36:35,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:36:35,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:36:35,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:36:35,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:36:35,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:36:35,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:36:35,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:36:35,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:36:35,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:36:35,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:36:35,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:36:35,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:36:35,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:36:35,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:36:35,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:36:35,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:36:35,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:36:35,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:36:35,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:36:35,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:36:35,151 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:36:35,152 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:36:35,152 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:36:35,152 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:36:35,152 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:36:35,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:36:35,153 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:36:35,153 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:36:35,153 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:36:35,153 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:36:35,154 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:36:35,154 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:36:35,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:36:35,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:36:35,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:36:35,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:36:35,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:36:35,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:36:35,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:36:35,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:36:35,156 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:36:35,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:36:35,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:36:35,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:36:35,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:36:35,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:36:35,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:35,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:36:35,158 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:36:35,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:36:35,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:36:35,159 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:36:35,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:36:35,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:36:35,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:36:35,166 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_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe [2022-11-23 15:36:35,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:36:35,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:36:35,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:36:35,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:36:35,427 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:36:35,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/systemc/transmitter.01.cil.c [2022-11-23 15:36:38,509 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:36:38,747 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:36:38,748 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/sv-benchmarks/c/systemc/transmitter.01.cil.c [2022-11-23 15:36:38,756 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/data/c330de222/d20c27b7748345ffb9ccc39ad3705d6e/FLAG5d4c23c4c [2022-11-23 15:36:38,770 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/data/c330de222/d20c27b7748345ffb9ccc39ad3705d6e [2022-11-23 15:36:38,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:36:38,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:36:38,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:38,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:36:38,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:36:38,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:38" (1/1) ... [2022-11-23 15:36:38,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d66c839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:38, skipping insertion in model container [2022-11-23 15:36:38,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:38" (1/1) ... [2022-11-23 15:36:38,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:36:38,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:36:38,949 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_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2022-11-23 15:36:38,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:39,004 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:36:39,016 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_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2022-11-23 15:36:39,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:39,052 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:36:39,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39 WrapperNode [2022-11-23 15:36:39,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:39,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:39,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:36:39,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:36:39,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,109 INFO L138 Inliner]: procedures = 30, calls = 33, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 209 [2022-11-23 15:36:39,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:39,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:36:39,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:36:39,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:36:39,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,166 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:36:39,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:36:39,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:36:39,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:36:39,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (1/1) ... [2022-11-23 15:36:39,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:39,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:36:39,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:36:39,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:36:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:36:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 15:36:39,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 15:36:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 15:36:39,254 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 15:36:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 15:36:39,254 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 15:36:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 15:36:39,255 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 15:36:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:36:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 15:36:39,255 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 15:36:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:36:39,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:36:39,330 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:36:39,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:36:39,649 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:36:39,874 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:36:39,875 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-23 15:36:39,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:39 BoogieIcfgContainer [2022-11-23 15:36:39,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:36:39,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:36:39,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:36:39,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:36:39,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:38" (1/3) ... [2022-11-23 15:36:39,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365e6580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:39, skipping insertion in model container [2022-11-23 15:36:39,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:39" (2/3) ... [2022-11-23 15:36:39,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365e6580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:39, skipping insertion in model container [2022-11-23 15:36:39,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:39" (3/3) ... [2022-11-23 15:36:39,892 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2022-11-23 15:36:39,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:36:39,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:36:39,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:36:40,007 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;@5f9d1004, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:36:40,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:36:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 44 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 15:36:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 15:36:40,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:40,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:36:40,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:36:40,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash 606187768, now seen corresponding path program 1 times [2022-11-23 15:36:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:36:40,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097053578] [2022-11-23 15:36:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:40,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:36:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:36:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:36:40,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:36:40,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097053578] [2022-11-23 15:36:40,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097053578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:36:40,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:36:40,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:36:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120183380] [2022-11-23 15:36:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:36:40,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:36:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:36:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:36:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:36:40,412 INFO L87 Difference]: Start difference. First operand has 62 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 44 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:36:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:36:40,660 INFO L93 Difference]: Finished difference Result 169 states and 242 transitions. [2022-11-23 15:36:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:36:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-11-23 15:36:40,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:36:40,671 INFO L225 Difference]: With dead ends: 169 [2022-11-23 15:36:40,671 INFO L226 Difference]: Without dead ends: 108 [2022-11-23 15:36:40,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:36:40,691 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 130 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:36:40,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 174 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:36:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-23 15:36:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2022-11-23 15:36:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 74 states have internal predecessors, (94), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-23 15:36:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2022-11-23 15:36:40,806 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 33 [2022-11-23 15:36:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:36:40,806 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2022-11-23 15:36:40,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:36:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2022-11-23 15:36:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 15:36:40,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:40,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:36:40,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:36:40,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:36:40,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:40,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1386168697, now seen corresponding path program 1 times [2022-11-23 15:36:40,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:36:40,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877982828] [2022-11-23 15:36:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:40,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:36:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:36:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:36:41,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:36:41,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877982828] [2022-11-23 15:36:41,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877982828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:36:41,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:36:41,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:36:41,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170627809] [2022-11-23 15:36:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:36:41,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:36:41,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:36:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:36:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:36:41,184 INFO L87 Difference]: Start difference. First operand 105 states and 136 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:36:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:36:41,538 INFO L93 Difference]: Finished difference Result 271 states and 348 transitions. [2022-11-23 15:36:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:36:41,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-11-23 15:36:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:36:41,550 INFO L225 Difference]: With dead ends: 271 [2022-11-23 15:36:41,550 INFO L226 Difference]: Without dead ends: 172 [2022-11-23 15:36:41,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:36:41,553 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 180 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:36:41,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 166 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:36:41,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-23 15:36:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 158. [2022-11-23 15:36:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 113 states have internal predecessors, (143), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-23 15:36:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2022-11-23 15:36:41,600 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 33 [2022-11-23 15:36:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:36:41,600 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2022-11-23 15:36:41,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:36:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2022-11-23 15:36:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:36:41,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:41,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:36:41,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:36:41,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:36:41,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:41,603 INFO L85 PathProgramCache]: Analyzing trace with hash 912561565, now seen corresponding path program 1 times [2022-11-23 15:36:41,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:36:41,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226132559] [2022-11-23 15:36:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:36:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:36:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:36:41,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:36:41,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226132559] [2022-11-23 15:36:41,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226132559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:36:41,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:36:41,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:36:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172959721] [2022-11-23 15:36:41,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:36:41,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:36:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:36:41,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:36:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:36:41,704 INFO L87 Difference]: Start difference. First operand 158 states and 201 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 15:36:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:36:41,814 INFO L93 Difference]: Finished difference Result 454 states and 578 transitions. [2022-11-23 15:36:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:36:41,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-11-23 15:36:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:36:41,821 INFO L225 Difference]: With dead ends: 454 [2022-11-23 15:36:41,821 INFO L226 Difference]: Without dead ends: 301 [2022-11-23 15:36:41,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:36:41,833 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 57 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:36:41,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 135 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:36:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-23 15:36:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2022-11-23 15:36:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 211 states have (on average 1.2274881516587677) internal successors, (259), 212 states have internal predecessors, (259), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-23 15:36:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2022-11-23 15:36:41,922 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 34 [2022-11-23 15:36:41,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:36:41,923 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2022-11-23 15:36:41,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 15:36:41,923 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2022-11-23 15:36:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 15:36:41,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:41,932 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:36:41,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:36:41,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:36:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1714501433, now seen corresponding path program 1 times [2022-11-23 15:36:41,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:36:41,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082950999] [2022-11-23 15:36:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:41,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:36:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:36:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:36:42,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:36:42,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082950999] [2022-11-23 15:36:42,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082950999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:36:42,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:36:42,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:36:42,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924091167] [2022-11-23 15:36:42,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:36:42,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:36:42,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:36:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:36:42,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:36:42,042 INFO L87 Difference]: Start difference. First operand 298 states and 367 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:36:42,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:36:42,141 INFO L93 Difference]: Finished difference Result 544 states and 675 transitions. [2022-11-23 15:36:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:36:42,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-11-23 15:36:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:36:42,151 INFO L225 Difference]: With dead ends: 544 [2022-11-23 15:36:42,151 INFO L226 Difference]: Without dead ends: 392 [2022-11-23 15:36:42,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:36:42,153 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:36:42,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 159 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:36:42,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-23 15:36:42,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 328. [2022-11-23 15:36:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 235 states have (on average 1.2297872340425533) internal successors, (289), 236 states have internal predecessors, (289), 57 states have call successors, (57), 35 states have call predecessors, (57), 35 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-23 15:36:42,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 403 transitions. [2022-11-23 15:36:42,195 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 403 transitions. Word has length 46 [2022-11-23 15:36:42,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:36:42,196 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 403 transitions. [2022-11-23 15:36:42,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:36:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 403 transitions. [2022-11-23 15:36:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 15:36:42,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:42,198 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:36:42,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:36:42,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:36:42,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:42,199 INFO L85 PathProgramCache]: Analyzing trace with hash 355288439, now seen corresponding path program 1 times [2022-11-23 15:36:42,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:36:42,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46563064] [2022-11-23 15:36:42,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:42,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:36:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:36:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 15:36:42,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:36:42,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46563064] [2022-11-23 15:36:42,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46563064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:36:42,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:36:42,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:36:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63366505] [2022-11-23 15:36:42,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:36:42,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:36:42,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:36:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:36:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:36:42,258 INFO L87 Difference]: Start difference. First operand 328 states and 403 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:36:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:36:42,443 INFO L93 Difference]: Finished difference Result 510 states and 637 transitions. [2022-11-23 15:36:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:36:42,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-11-23 15:36:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:36:42,449 INFO L225 Difference]: With dead ends: 510 [2022-11-23 15:36:42,450 INFO L226 Difference]: Without dead ends: 328 [2022-11-23 15:36:42,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:36:42,454 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 126 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:36:42,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 174 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:36:42,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-23 15:36:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2022-11-23 15:36:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 231 states have (on average 1.1904761904761905) internal successors, (275), 232 states have internal predecessors, (275), 57 states have call successors, (57), 35 states have call predecessors, (57), 35 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-23 15:36:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 389 transitions. [2022-11-23 15:36:42,527 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 389 transitions. Word has length 60 [2022-11-23 15:36:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:36:42,528 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 389 transitions. [2022-11-23 15:36:42,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:36:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 389 transitions. [2022-11-23 15:36:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 15:36:42,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:42,535 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:36:42,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:36:42,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:36:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:42,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1643482968, now seen corresponding path program 1 times [2022-11-23 15:36:42,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:36:42,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898204447] [2022-11-23 15:36:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:42,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:36:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:42,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:36:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:42,640 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:36:42,640 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:36:42,641 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:36:42,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:36:42,647 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-23 15:36:42,652 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:36:42,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:36:42 BoogieIcfgContainer [2022-11-23 15:36:42,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:36:42,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:36:42,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:36:42,743 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:36:42,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:39" (3/4) ... [2022-11-23 15:36:42,746 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 15:36:42,843 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:36:42,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:36:42,848 INFO L158 Benchmark]: Toolchain (without parser) took 4073.41ms. Allocated memory was 130.0MB in the beginning and 163.6MB in the end (delta: 33.6MB). Free memory was 92.4MB in the beginning and 57.2MB in the end (delta: 35.2MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. [2022-11-23 15:36:42,848 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:42,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.99ms. Allocated memory is still 130.0MB. Free memory was 92.2MB in the beginning and 79.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:36:42,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.95ms. Allocated memory is still 130.0MB. Free memory was 79.6MB in the beginning and 77.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:42,852 INFO L158 Benchmark]: Boogie Preprocessor took 58.82ms. Allocated memory is still 130.0MB. Free memory was 77.7MB in the beginning and 75.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:42,852 INFO L158 Benchmark]: RCFGBuilder took 706.88ms. Allocated memory was 130.0MB in the beginning and 163.6MB in the end (delta: 33.6MB). Free memory was 75.9MB in the beginning and 132.4MB in the end (delta: -56.4MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2022-11-23 15:36:42,853 INFO L158 Benchmark]: TraceAbstraction took 2862.64ms. Allocated memory is still 163.6MB. Free memory was 131.6MB in the beginning and 62.4MB in the end (delta: 69.1MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. [2022-11-23 15:36:42,853 INFO L158 Benchmark]: Witness Printer took 104.33ms. Allocated memory is still 163.6MB. Free memory was 62.4MB in the beginning and 57.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:36:42,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.99ms. Allocated memory is still 130.0MB. Free memory was 92.2MB in the beginning and 79.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.95ms. Allocated memory is still 130.0MB. Free memory was 79.6MB in the beginning and 77.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.82ms. Allocated memory is still 130.0MB. Free memory was 77.7MB in the beginning and 75.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 706.88ms. Allocated memory was 130.0MB in the beginning and 163.6MB in the end (delta: 33.6MB). Free memory was 75.9MB in the beginning and 132.4MB in the end (delta: -56.4MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2862.64ms. Allocated memory is still 163.6MB. Free memory was 131.6MB in the beginning and 62.4MB in the end (delta: 69.1MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. * Witness Printer took 104.33ms. Allocated memory is still 163.6MB. Free memory was 62.4MB in the beginning and 57.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int m_pc = 0; [L26] int t1_pc = 0; [L27] int m_st ; [L28] int t1_st ; [L29] int m_i ; [L30] int t1_i ; [L31] int M_E = 2; [L32] int T1_E = 2; [L33] int E_1 = 2; [L449] int __retres1 ; [L453] CALL init_model() [L364] m_i = 1 [L365] t1_i = 1 [L453] RET init_model() [L454] CALL start_simulation() [L390] int kernel_st ; [L391] int tmp ; [L392] int tmp___0 ; [L396] kernel_st = 0 VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L397] FCALL update_channels() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L398] CALL init_threads() [L161] COND TRUE m_i == 1 [L162] m_st = 0 [L166] COND TRUE t1_i == 1 [L167] t1_st = 0 [L398] RET init_threads() [L399] CALL fire_delta_events() VAL [\old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L250] COND FALSE !(M_E == 0) [L255] COND FALSE !(T1_E == 0) [L260] COND FALSE !(E_1 == 0) [L399] RET fire_delta_events() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L400] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L115] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L125] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L134] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L144] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND FALSE !(\read(tmp___0)) [L400] RET activate_threads() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L401] CALL reset_delta_events() VAL [\old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L273] COND FALSE !(M_E == 1) [L278] COND FALSE !(T1_E == 1) [L283] COND FALSE !(E_1 == 1) [L401] RET reset_delta_events() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L404] COND TRUE 1 [L407] kernel_st = 1 [L408] CALL eval() [L197] int tmp ; VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L201] COND TRUE 1 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, exists_runnable_thread()=1, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0] [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND TRUE t1_pc == 0 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1] [L93] COND TRUE 1 [L95] t1_pc = 1 [L96] t1_st = 2 [L231] RET transmit1() [L201] COND TRUE 1 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, exists_runnable_thread()=1, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND TRUE \read(tmp_ndt_1) [L216] m_st = 1 [L217] CALL master() [L41] COND TRUE m_pc == 0 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L52] COND TRUE 1 [L55] E_1 = 1 [L56] CALL immediate_notify() [L322] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L115] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L125] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=0, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L134] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L135] COND TRUE E_1 == 1 [L136] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=1, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND TRUE \read(tmp___0) [L309] t1_st = 0 [L322] RET activate_threads() VAL [E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L56] RET immediate_notify() [L57] E_1 = 2 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L60] COND TRUE 1 [L62] m_pc = 1 [L63] m_st = 2 VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L217] RET master() [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND FALSE !(t1_pc == 0) VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1] [L85] COND TRUE t1_pc == 1 [L101] CALL error() [L21] reach_error() VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 534 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 527 mSDsluCounter, 808 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 338 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 419 IncrementalHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 470 mSDtfsCounter, 419 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 88 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 15:36:42,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c0fe1d-aae3-4e57-b929-42c25a00cd12/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE