./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label25.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72f92f25e4e59fa95b8789bfa42e8fcf3cc5f940b4a99df7cabdcfbbf5ccf30f --- 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-b5237d8 [2022-11-21 16:46:07,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:46:07,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:46:07,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:46:07,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:46:07,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:46:07,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:46:07,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:46:07,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:46:07,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:46:07,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:46:07,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:46:07,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:46:07,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:46:07,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:46:07,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:46:07,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:46:07,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:46:07,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:46:07,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:46:07,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:46:07,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:46:07,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:46:07,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:46:07,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:46:07,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:46:07,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:46:07,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:46:07,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:46:07,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:46:07,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:46:07,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:46:07,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:46:07,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:46:07,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:46:07,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:46:07,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:46:07,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:46:07,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:46:07,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:46:07,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:46:07,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:46:07,233 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:46:07,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:46:07,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:46:07,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:46:07,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:46:07,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:46:07,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:46:07,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:46:07,240 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:46:07,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:46:07,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:46:07,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:46:07,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:46:07,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:46:07,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:46:07,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:46:07,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:46:07,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:46:07,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:46:07,243 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:46:07,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:46:07,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:46:07,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:46:07,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:46:07,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:46:07,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:46:07,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:46:07,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:46:07,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:46:07,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:46:07,246 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:46:07,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:46:07,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:46:07,247 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_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72f92f25e4e59fa95b8789bfa42e8fcf3cc5f940b4a99df7cabdcfbbf5ccf30f [2022-11-21 16:46:07,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:46:07,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:46:07,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:46:07,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:46:07,600 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:46:07,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem13_label25.c [2022-11-21 16:46:10,704 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:46:11,358 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:46:11,358 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/sv-benchmarks/c/eca-rers2012/Problem13_label25.c [2022-11-21 16:46:11,402 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/data/564e059bd/71dec84b2e234c47aa5b6a162d3edd79/FLAGff2abe8ec [2022-11-21 16:46:11,422 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/data/564e059bd/71dec84b2e234c47aa5b6a162d3edd79 [2022-11-21 16:46:11,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:46:11,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:46:11,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:46:11,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:46:11,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:46:11,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:46:11" (1/1) ... [2022-11-21 16:46:11,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d30615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:11, skipping insertion in model container [2022-11-21 16:46:11,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:46:11" (1/1) ... [2022-11-21 16:46:11,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:46:11,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:46:11,891 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_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/sv-benchmarks/c/eca-rers2012/Problem13_label25.c[3529,3542] [2022-11-21 16:46:13,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:46:13,103 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:46:13,133 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_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/sv-benchmarks/c/eca-rers2012/Problem13_label25.c[3529,3542] [2022-11-21 16:46:13,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:46:13,849 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:46:13,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13 WrapperNode [2022-11-21 16:46:13,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:46:13,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:46:13,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:46:13,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:46:13,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:13,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:14,642 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-21 16:46:14,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:46:14,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:46:14,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:46:14,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:46:14,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:14,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:14,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:14,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:15,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:15,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:15,366 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:15,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:15,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:46:15,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:46:15,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:46:15,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:46:15,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (1/1) ... [2022-11-21 16:46:15,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:46:15,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:46:15,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:46:15,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:46:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:46:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:46:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:46:15,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:46:15,653 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:46:15,656 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:46:22,286 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:46:22,312 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:46:22,312 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:46:22,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:46:22 BoogieIcfgContainer [2022-11-21 16:46:22,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:46:22,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:46:22,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:46:22,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:46:22,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:46:11" (1/3) ... [2022-11-21 16:46:22,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b034612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:46:22, skipping insertion in model container [2022-11-21 16:46:22,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:46:13" (2/3) ... [2022-11-21 16:46:22,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b034612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:46:22, skipping insertion in model container [2022-11-21 16:46:22,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:46:22" (3/3) ... [2022-11-21 16:46:22,329 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label25.c [2022-11-21 16:46:22,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:46:22,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:46:22,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:46:22,452 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=PETRI_NET, 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;@6bc0e6fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:46:22,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:46:22,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 16:46:22,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:22,469 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] [2022-11-21 16:46:22,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash -573341295, now seen corresponding path program 1 times [2022-11-21 16:46:22,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:22,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379464746] [2022-11-21 16:46:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:22,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:22,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:22,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379464746] [2022-11-21 16:46:22,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379464746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:22,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:22,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:46:22,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833434583] [2022-11-21 16:46:22,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:22,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:46:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:22,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:46:22,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:22,843 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:29,021 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-11-21 16:46:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:46:29,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-21 16:46:29,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:29,053 INFO L225 Difference]: With dead ends: 3082 [2022-11-21 16:46:29,055 INFO L226 Difference]: Without dead ends: 1899 [2022-11-21 16:46:29,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:29,072 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1016 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:29,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 16:46:29,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-11-21 16:46:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-11-21 16:46:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-11-21 16:46:29,230 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 23 [2022-11-21 16:46:29,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:29,231 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-11-21 16:46:29,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:29,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-11-21 16:46:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-21 16:46:29,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:29,237 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:46:29,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:46:29,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash 679112298, now seen corresponding path program 1 times [2022-11-21 16:46:29,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:29,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064199306] [2022-11-21 16:46:29,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:29,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:29,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064199306] [2022-11-21 16:46:29,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064199306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:29,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:29,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:46:29,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216736147] [2022-11-21 16:46:29,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:29,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:46:29,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:29,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:46:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:29,623 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:34,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:34,568 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-11-21 16:46:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:46:34,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-21 16:46:34,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:34,583 INFO L225 Difference]: With dead ends: 5384 [2022-11-21 16:46:34,584 INFO L226 Difference]: Without dead ends: 3492 [2022-11-21 16:46:34,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:34,593 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:34,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-21 16:46:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-11-21 16:46:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-11-21 16:46:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-11-21 16:46:34,674 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 88 [2022-11-21 16:46:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:34,676 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-11-21 16:46:34,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-11-21 16:46:34,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-21 16:46:34,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:34,686 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:46:34,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:46:34,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1248984753, now seen corresponding path program 1 times [2022-11-21 16:46:34,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:34,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485198213] [2022-11-21 16:46:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:34,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:34,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485198213] [2022-11-21 16:46:34,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485198213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:34,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:34,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:46:34,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904391046] [2022-11-21 16:46:34,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:34,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:46:34,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:46:34,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:34,901 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:39,290 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-11-21 16:46:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:46:39,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-11-21 16:46:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:39,320 INFO L225 Difference]: With dead ends: 10169 [2022-11-21 16:46:39,320 INFO L226 Difference]: Without dead ends: 6680 [2022-11-21 16:46:39,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:39,326 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:39,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 16:46:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-11-21 16:46:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-11-21 16:46:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-11-21 16:46:39,470 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 90 [2022-11-21 16:46:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:39,472 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-11-21 16:46:39,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-11-21 16:46:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-21 16:46:39,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:39,481 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:39,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:46:39,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1171343069, now seen corresponding path program 1 times [2022-11-21 16:46:39,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:39,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873746439] [2022-11-21 16:46:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:39,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:40,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:40,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873746439] [2022-11-21 16:46:40,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873746439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:40,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:40,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:46:40,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178579421] [2022-11-21 16:46:40,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:40,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:46:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:46:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:40,158 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:44,191 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2022-11-21 16:46:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:46:44,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-11-21 16:46:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:44,219 INFO L225 Difference]: With dead ends: 14123 [2022-11-21 16:46:44,220 INFO L226 Difference]: Without dead ends: 7456 [2022-11-21 16:46:44,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:44,229 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:44,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 16:46:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2022-11-21 16:46:44,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2022-11-21 16:46:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2022-11-21 16:46:44,388 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 134 [2022-11-21 16:46:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:44,390 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2022-11-21 16:46:44,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2022-11-21 16:46:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-21 16:46:44,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:44,394 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:44,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:46:44,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:44,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1577063047, now seen corresponding path program 1 times [2022-11-21 16:46:44,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:44,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344848519] [2022-11-21 16:46:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:44,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 16:46:44,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:44,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344848519] [2022-11-21 16:46:44,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344848519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:44,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:44,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:46:44,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889412330] [2022-11-21 16:46:44,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:44,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:46:44,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:44,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:46:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:44,721 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:49,560 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2022-11-21 16:46:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:46:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-11-21 16:46:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:49,610 INFO L225 Difference]: With dead ends: 19656 [2022-11-21 16:46:49,610 INFO L226 Difference]: Without dead ends: 12989 [2022-11-21 16:46:49,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:49,620 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:49,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 16:46:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2022-11-21 16:46:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2022-11-21 16:46:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2022-11-21 16:46:49,888 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 148 [2022-11-21 16:46:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:49,890 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2022-11-21 16:46:49,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2022-11-21 16:46:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-21 16:46:49,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:49,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-21 16:46:49,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:46:49,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1306910518, now seen corresponding path program 1 times [2022-11-21 16:46:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:49,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56709489] [2022-11-21 16:46:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-21 16:46:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:50,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56709489] [2022-11-21 16:46:50,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56709489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:50,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:50,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:46:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168758658] [2022-11-21 16:46:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:46:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:46:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:50,511 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:54,961 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2022-11-21 16:46:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:46:54,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2022-11-21 16:46:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:54,988 INFO L225 Difference]: With dead ends: 22792 [2022-11-21 16:46:54,989 INFO L226 Difference]: Without dead ends: 12980 [2022-11-21 16:46:54,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:54,999 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:55,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 16:46:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2022-11-21 16:46:55,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2022-11-21 16:46:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2022-11-21 16:46:55,200 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 235 [2022-11-21 16:46:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:55,200 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2022-11-21 16:46:55,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2022-11-21 16:46:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-21 16:46:55,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:55,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-21 16:46:55,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:46:55,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:55,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:55,206 INFO L85 PathProgramCache]: Analyzing trace with hash -658013584, now seen corresponding path program 1 times [2022-11-21 16:46:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:55,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138640291] [2022-11-21 16:46:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:55,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:55,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138640291] [2022-11-21 16:46:55,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138640291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:55,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:55,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:46:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837682278] [2022-11-21 16:46:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:55,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:46:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:46:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:46:55,434 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:00,256 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2022-11-21 16:47:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:47:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-11-21 16:47:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:00,301 INFO L225 Difference]: With dead ends: 36166 [2022-11-21 16:47:00,301 INFO L226 Difference]: Without dead ends: 23196 [2022-11-21 16:47:00,314 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 [2022-11-21 16:47:00,315 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 841 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:00,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1989 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 16:47:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-11-21 16:47:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 22404. [2022-11-21 16:47:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:00,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2022-11-21 16:47:00,645 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 237 [2022-11-21 16:47:00,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:00,645 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2022-11-21 16:47:00,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2022-11-21 16:47:00,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-21 16:47:00,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:00,650 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:47:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:47:00,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash -116068480, now seen corresponding path program 1 times [2022-11-21 16:47:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:00,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670433978] [2022-11-21 16:47:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:47:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:00,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670433978] [2022-11-21 16:47:00,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670433978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:00,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:00,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:47:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37492654] [2022-11-21 16:47:00,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:00,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:47:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:47:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:47:00,895 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:05,590 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2022-11-21 16:47:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:47:05,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2022-11-21 16:47:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:05,644 INFO L225 Difference]: With dead ends: 55046 [2022-11-21 16:47:05,644 INFO L226 Difference]: Without dead ends: 33431 [2022-11-21 16:47:05,661 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 [2022-11-21 16:47:05,662 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 884 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:05,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 926 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 16:47:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2022-11-21 16:47:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2022-11-21 16:47:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.1762578905436047) internal successors, (38386), 32634 states have internal predecessors, (38386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38386 transitions. [2022-11-21 16:47:06,073 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38386 transitions. Word has length 259 [2022-11-21 16:47:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:06,074 INFO L495 AbstractCegarLoop]: Abstraction has 32635 states and 38386 transitions. [2022-11-21 16:47:06,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38386 transitions. [2022-11-21 16:47:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-21 16:47:06,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:06,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2022-11-21 16:47:06,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:47:06,079 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:06,080 INFO L85 PathProgramCache]: Analyzing trace with hash 539258178, now seen corresponding path program 1 times [2022-11-21 16:47:06,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:06,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674592173] [2022-11-21 16:47:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:06,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 41 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674592173] [2022-11-21 16:47:07,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674592173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:47:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228775909] [2022-11-21 16:47:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:07,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:47:07,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:47:07,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:47:07,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:47:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:07,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:47:07,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-21 16:47:07,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:47:07,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228775909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:07,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:47:07,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:47:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452693705] [2022-11-21 16:47:07,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:47:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:07,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:47:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:07,920 INFO L87 Difference]: Start difference. First operand 32635 states and 38386 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:12,345 INFO L93 Difference]: Finished difference Result 64479 states and 75977 transitions. [2022-11-21 16:47:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:47:12,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2022-11-21 16:47:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:12,392 INFO L225 Difference]: With dead ends: 64479 [2022-11-21 16:47:12,392 INFO L226 Difference]: Without dead ends: 32633 [2022-11-21 16:47:12,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:12,410 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 1184 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:12,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1441 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 16:47:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32633 states. [2022-11-21 16:47:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32633 to 32632. [2022-11-21 16:47:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32632 states, 32631 states have (on average 1.1368330728448408) internal successors, (37096), 32631 states have internal predecessors, (37096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32632 states to 32632 states and 37096 transitions. [2022-11-21 16:47:12,945 INFO L78 Accepts]: Start accepts. Automaton has 32632 states and 37096 transitions. Word has length 264 [2022-11-21 16:47:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:12,946 INFO L495 AbstractCegarLoop]: Abstraction has 32632 states and 37096 transitions. [2022-11-21 16:47:12,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 32632 states and 37096 transitions. [2022-11-21 16:47:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-21 16:47:12,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:12,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2022-11-21 16:47:12,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:47:13,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:47:13,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:13,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:13,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1190291685, now seen corresponding path program 1 times [2022-11-21 16:47:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:13,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488602912] [2022-11-21 16:47:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:13,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-21 16:47:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:13,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488602912] [2022-11-21 16:47:13,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488602912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:13,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:13,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:47:13,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649123220] [2022-11-21 16:47:13,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:47:13,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:47:13,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:47:13,457 INFO L87 Difference]: Start difference. First operand 32632 states and 37096 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:18,497 INFO L93 Difference]: Finished difference Result 76288 states and 87829 transitions. [2022-11-21 16:47:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:47:18,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2022-11-21 16:47:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:18,544 INFO L225 Difference]: With dead ends: 76288 [2022-11-21 16:47:18,545 INFO L226 Difference]: Without dead ends: 44445 [2022-11-21 16:47:18,558 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 [2022-11-21 16:47:18,558 INFO L413 NwaCegarLoop]: 1802 mSDtfsCounter, 840 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:18,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1945 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 16:47:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44445 states. [2022-11-21 16:47:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44445 to 43654. [2022-11-21 16:47:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43654 states, 43653 states have (on average 1.1179300391725655) internal successors, (48801), 43653 states have internal predecessors, (48801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43654 states to 43654 states and 48801 transitions. [2022-11-21 16:47:19,141 INFO L78 Accepts]: Start accepts. Automaton has 43654 states and 48801 transitions. Word has length 314 [2022-11-21 16:47:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:19,142 INFO L495 AbstractCegarLoop]: Abstraction has 43654 states and 48801 transitions. [2022-11-21 16:47:19,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 43654 states and 48801 transitions. [2022-11-21 16:47:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-21 16:47:19,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:19,150 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-21 16:47:19,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:47:19,150 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:19,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:19,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1124335399, now seen corresponding path program 1 times [2022-11-21 16:47:19,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:19,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103516942] [2022-11-21 16:47:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:19,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 170 proven. 113 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:47:20,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:20,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103516942] [2022-11-21 16:47:20,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103516942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:47:20,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085146529] [2022-11-21 16:47:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:20,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:47:20,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:47:20,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:47:20,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:47:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:47:21,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-21 16:47:21,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:47:21,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085146529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:21,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:47:21,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:47:21,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245454024] [2022-11-21 16:47:21,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:21,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:47:21,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:21,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:47:21,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:21,246 INFO L87 Difference]: Start difference. First operand 43654 states and 48801 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:25,458 INFO L93 Difference]: Finished difference Result 86510 states and 96800 transitions. [2022-11-21 16:47:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:47:25,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2022-11-21 16:47:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:25,501 INFO L225 Difference]: With dead ends: 86510 [2022-11-21 16:47:25,501 INFO L226 Difference]: Without dead ends: 43645 [2022-11-21 16:47:25,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:25,525 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1074 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:25,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 813 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 16:47:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2022-11-21 16:47:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2022-11-21 16:47:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086634740966478) internal successors, (47424), 43643 states have internal predecessors, (47424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:26,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47424 transitions. [2022-11-21 16:47:26,156 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47424 transitions. Word has length 329 [2022-11-21 16:47:26,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:26,157 INFO L495 AbstractCegarLoop]: Abstraction has 43644 states and 47424 transitions. [2022-11-21 16:47:26,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47424 transitions. [2022-11-21 16:47:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-21 16:47:26,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:26,167 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:47:26,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:47:26,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:47:26,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:26,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2025963814, now seen corresponding path program 1 times [2022-11-21 16:47:26,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:26,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706140937] [2022-11-21 16:47:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:26,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-21 16:47:26,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:26,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706140937] [2022-11-21 16:47:26,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706140937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:26,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:26,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:47:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848965835] [2022-11-21 16:47:26,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:26,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:47:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:26,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:47:26,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:47:26,732 INFO L87 Difference]: Start difference. First operand 43644 states and 47424 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:36,402 INFO L93 Difference]: Finished difference Result 150458 states and 163817 transitions. [2022-11-21 16:47:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:47:36,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-21 16:47:36,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:36,517 INFO L225 Difference]: With dead ends: 150458 [2022-11-21 16:47:36,517 INFO L226 Difference]: Without dead ends: 107603 [2022-11-21 16:47:36,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:47:36,552 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1713 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 7100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:36,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 753 Invalid, 7100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 6004 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-21 16:47:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107603 states. [2022-11-21 16:47:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107603 to 104326. [2022-11-21 16:47:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794728013419603) internal successors, (112616), 104325 states have internal predecessors, (112616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112616 transitions. [2022-11-21 16:47:38,006 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112616 transitions. Word has length 371 [2022-11-21 16:47:38,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:38,007 INFO L495 AbstractCegarLoop]: Abstraction has 104326 states and 112616 transitions. [2022-11-21 16:47:38,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112616 transitions. [2022-11-21 16:47:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-21 16:47:38,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:38,019 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:47:38,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:47:38,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash -620271952, now seen corresponding path program 1 times [2022-11-21 16:47:38,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:38,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166350586] [2022-11-21 16:47:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 339 proven. 113 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-21 16:47:40,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:40,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166350586] [2022-11-21 16:47:40,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166350586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:47:40,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522893446] [2022-11-21 16:47:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:40,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:47:40,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:47:40,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:47:40,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:47:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:40,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:47:40,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-21 16:47:40,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:47:40,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522893446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:40,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:47:40,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:47:40,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604407149] [2022-11-21 16:47:40,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:40,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:47:40,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:40,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:47:40,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:40,776 INFO L87 Difference]: Start difference. First operand 104326 states and 112616 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:45,570 INFO L93 Difference]: Finished difference Result 209441 states and 226030 transitions. [2022-11-21 16:47:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:47:45,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2022-11-21 16:47:45,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:45,867 INFO L225 Difference]: With dead ends: 209441 [2022-11-21 16:47:45,868 INFO L226 Difference]: Without dead ends: 105904 [2022-11-21 16:47:45,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:45,921 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 1016 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:45,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1472 Invalid, 3092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [607 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 16:47:46,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105904 states. [2022-11-21 16:47:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105904 to 104315. [2022-11-21 16:47:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104315 states, 104314 states have (on average 1.0673255747071342) internal successors, (111337), 104314 states have internal predecessors, (111337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104315 states to 104315 states and 111337 transitions. [2022-11-21 16:47:47,536 INFO L78 Accepts]: Start accepts. Automaton has 104315 states and 111337 transitions. Word has length 414 [2022-11-21 16:47:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:47,537 INFO L495 AbstractCegarLoop]: Abstraction has 104315 states and 111337 transitions. [2022-11-21 16:47:47,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 104315 states and 111337 transitions. [2022-11-21 16:47:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-21 16:47:47,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:47,552 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-21 16:47:47,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:47:47,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 16:47:47,759 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1877419229, now seen corresponding path program 1 times [2022-11-21 16:47:47,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:47,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970118578] [2022-11-21 16:47:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 375 proven. 113 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-21 16:47:49,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970118578] [2022-11-21 16:47:49,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970118578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:47:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078119711] [2022-11-21 16:47:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:47:49,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:47:49,898 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:47:49,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:47:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:50,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:47:50,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-21 16:47:50,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:47:50,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078119711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:50,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:47:50,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:47:50,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265831437] [2022-11-21 16:47:50,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:50,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:47:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:47:50,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:50,268 INFO L87 Difference]: Start difference. First operand 104315 states and 111337 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:55,306 INFO L93 Difference]: Finished difference Result 232249 states and 248873 transitions. [2022-11-21 16:47:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:47:55,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 432 [2022-11-21 16:47:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:55,445 INFO L225 Difference]: With dead ends: 232249 [2022-11-21 16:47:55,446 INFO L226 Difference]: Without dead ends: 128723 [2022-11-21 16:47:55,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:55,479 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 859 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:55,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1751 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 16:47:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128723 states. [2022-11-21 16:47:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128723 to 126349. [2022-11-21 16:47:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126349 states, 126348 states have (on average 1.068984075727356) internal successors, (135064), 126348 states have internal predecessors, (135064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126349 states to 126349 states and 135064 transitions. [2022-11-21 16:47:57,167 INFO L78 Accepts]: Start accepts. Automaton has 126349 states and 135064 transitions. Word has length 432 [2022-11-21 16:47:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:57,168 INFO L495 AbstractCegarLoop]: Abstraction has 126349 states and 135064 transitions. [2022-11-21 16:47:57,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 126349 states and 135064 transitions. [2022-11-21 16:47:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-21 16:47:57,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:57,185 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:57,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:47:57,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 16:47:57,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:57,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:57,392 INFO L85 PathProgramCache]: Analyzing trace with hash -214713478, now seen corresponding path program 1 times [2022-11-21 16:47:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:57,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505550513] [2022-11-21 16:47:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 443 proven. 113 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-21 16:47:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:59,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505550513] [2022-11-21 16:47:59,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505550513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:47:59,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771461909] [2022-11-21 16:47:59,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:59,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:47:59,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:47:59,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:47:59,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:47:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:59,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:47:59,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2022-11-21 16:47:59,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:47:59,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771461909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:59,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:47:59,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:47:59,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313161673] [2022-11-21 16:47:59,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:59,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:47:59,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:47:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:59,604 INFO L87 Difference]: Start difference. First operand 126349 states and 135064 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:05,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:05,611 INFO L93 Difference]: Finished difference Result 294495 states and 314875 transitions. [2022-11-21 16:48:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:48:05,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 469 [2022-11-21 16:48:05,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:05,775 INFO L225 Difference]: With dead ends: 294495 [2022-11-21 16:48:05,775 INFO L226 Difference]: Without dead ends: 168935 [2022-11-21 16:48:06,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:48:06,095 INFO L413 NwaCegarLoop]: 1739 mSDtfsCounter, 881 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 3498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:06,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1863 Invalid, 3498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-21 16:48:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168935 states. [2022-11-21 16:48:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168935 to 155485. [2022-11-21 16:48:08,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155485 states, 155484 states have (on average 1.0652092819839984) internal successors, (165623), 155484 states have internal predecessors, (165623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155485 states to 155485 states and 165623 transitions. [2022-11-21 16:48:08,158 INFO L78 Accepts]: Start accepts. Automaton has 155485 states and 165623 transitions. Word has length 469 [2022-11-21 16:48:08,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:08,159 INFO L495 AbstractCegarLoop]: Abstraction has 155485 states and 165623 transitions. [2022-11-21 16:48:08,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:08,159 INFO L276 IsEmpty]: Start isEmpty. Operand 155485 states and 165623 transitions. [2022-11-21 16:48:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-11-21 16:48:08,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:08,173 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:48:08,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:48:08,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 16:48:08,380 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:48:08,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1590547437, now seen corresponding path program 1 times [2022-11-21 16:48:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:08,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362040141] [2022-11-21 16:48:08,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 448 proven. 113 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-21 16:48:10,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:10,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362040141] [2022-11-21 16:48:10,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362040141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:48:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777238273] [2022-11-21 16:48:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:10,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:48:10,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:48:10,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:48:10,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:48:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:10,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:48:10,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:48:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-21 16:48:11,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:48:11,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777238273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:11,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:48:11,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:48:11,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988615073] [2022-11-21 16:48:11,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:11,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:48:11,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:11,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:48:11,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:48:11,070 INFO L87 Difference]: Start difference. First operand 155485 states and 165623 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:16,503 INFO L93 Difference]: Finished difference Result 308606 states and 328750 transitions. [2022-11-21 16:48:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:48:16,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 509 [2022-11-21 16:48:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:16,690 INFO L225 Difference]: With dead ends: 308606 [2022-11-21 16:48:16,690 INFO L226 Difference]: Without dead ends: 159421 [2022-11-21 16:48:16,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:48:16,747 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 939 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:16,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 496 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 16:48:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159421 states. [2022-11-21 16:48:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159421 to 157046. [2022-11-21 16:48:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157046 states, 157045 states have (on average 1.0566207138081443) internal successors, (165937), 157045 states have internal predecessors, (165937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157046 states to 157046 states and 165937 transitions. [2022-11-21 16:48:18,742 INFO L78 Accepts]: Start accepts. Automaton has 157046 states and 165937 transitions. Word has length 509 [2022-11-21 16:48:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:18,742 INFO L495 AbstractCegarLoop]: Abstraction has 157046 states and 165937 transitions. [2022-11-21 16:48:18,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 157046 states and 165937 transitions. [2022-11-21 16:48:18,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2022-11-21 16:48:18,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:18,758 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:18,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:48:18,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 16:48:18,959 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:48:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:18,960 INFO L85 PathProgramCache]: Analyzing trace with hash -212197548, now seen corresponding path program 1 times [2022-11-21 16:48:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929192439] [2022-11-21 16:48:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:18,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 448 proven. 113 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-21 16:48:21,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:21,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929192439] [2022-11-21 16:48:21,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929192439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:48:21,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992239071] [2022-11-21 16:48:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:21,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:48:21,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:48:21,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:48:21,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:48:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:21,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:48:21,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:48:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-21 16:48:22,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:48:22,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992239071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:22,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:48:22,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-21 16:48:22,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085353273] [2022-11-21 16:48:22,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:22,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:48:22,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:22,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:48:22,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:48:22,428 INFO L87 Difference]: Start difference. First operand 157046 states and 165937 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:27,146 INFO L93 Difference]: Finished difference Result 307804 states and 325506 transitions. [2022-11-21 16:48:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:48:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 555 [2022-11-21 16:48:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:27,307 INFO L225 Difference]: With dead ends: 307804 [2022-11-21 16:48:27,308 INFO L226 Difference]: Without dead ends: 161782 [2022-11-21 16:48:27,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:48:27,364 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 682 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:27,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1132 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 16:48:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161782 states. [2022-11-21 16:48:29,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161782 to 159411. [2022-11-21 16:48:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159411 states, 159410 states have (on average 1.0517847061037575) internal successors, (167665), 159410 states have internal predecessors, (167665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159411 states to 159411 states and 167665 transitions. [2022-11-21 16:48:29,495 INFO L78 Accepts]: Start accepts. Automaton has 159411 states and 167665 transitions. Word has length 555 [2022-11-21 16:48:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:29,495 INFO L495 AbstractCegarLoop]: Abstraction has 159411 states and 167665 transitions. [2022-11-21 16:48:29,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:29,495 INFO L276 IsEmpty]: Start isEmpty. Operand 159411 states and 167665 transitions. [2022-11-21 16:48:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-11-21 16:48:29,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:29,507 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:48:29,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:48:29,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c990d4ae-5bc2-4bab-9959-5ef8e8a88181/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 16:48:29,709 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:48:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1929903071, now seen corresponding path program 1 times [2022-11-21 16:48:29,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:29,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252054206] [2022-11-21 16:48:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-21 16:48:30,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:30,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252054206] [2022-11-21 16:48:30,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252054206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:30,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:30,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:48:30,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986926384] [2022-11-21 16:48:30,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:30,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:48:30,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:48:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:48:30,632 INFO L87 Difference]: Start difference. First operand 159411 states and 167665 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:35,606 INFO L93 Difference]: Finished difference Result 306228 states and 322511 transitions. [2022-11-21 16:48:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:48:35,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 571 [2022-11-21 16:48:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:35,770 INFO L225 Difference]: With dead ends: 306228 [2022-11-21 16:48:35,770 INFO L226 Difference]: Without dead ends: 160204 [2022-11-21 16:48:35,821 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 [2022-11-21 16:48:35,821 INFO L413 NwaCegarLoop]: 1747 mSDtfsCounter, 722 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:35,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1881 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 16:48:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160204 states. [2022-11-21 16:48:37,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160204 to 160199. [2022-11-21 16:48:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160199 states, 160198 states have (on average 1.051748461279167) internal successors, (168488), 160198 states have internal predecessors, (168488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160199 states to 160199 states and 168488 transitions. [2022-11-21 16:48:38,201 INFO L78 Accepts]: Start accepts. Automaton has 160199 states and 168488 transitions. Word has length 571 [2022-11-21 16:48:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:38,202 INFO L495 AbstractCegarLoop]: Abstraction has 160199 states and 168488 transitions. [2022-11-21 16:48:38,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 160199 states and 168488 transitions. [2022-11-21 16:48:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-11-21 16:48:38,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:38,215 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:38,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:48:38,216 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:48:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:38,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1352792193, now seen corresponding path program 1 times [2022-11-21 16:48:38,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:38,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49927552] [2022-11-21 16:48:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:38,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-11-21 16:48:38,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:38,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49927552] [2022-11-21 16:48:38,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49927552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:38,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:38,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:48:38,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730255524] [2022-11-21 16:48:38,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:38,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:48:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:38,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:48:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:48:38,557 INFO L87 Difference]: Start difference. First operand 160199 states and 168488 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:42,083 INFO L93 Difference]: Finished difference Result 306207 states and 322438 transitions. [2022-11-21 16:48:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:48:42,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 586 [2022-11-21 16:48:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:42,245 INFO L225 Difference]: With dead ends: 306207 [2022-11-21 16:48:42,245 INFO L226 Difference]: Without dead ends: 159395 [2022-11-21 16:48:42,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:48:42,300 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1608 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:42,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 292 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-21 16:48:42,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159395 states.