./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label21.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro --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 cf1785c72f46b71ff38ed18504aab74c5c60cda53bca8d196fb5a21f47b63a1c --- 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-8393723 [2022-11-18 20:46:25,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:46:25,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:46:25,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:46:25,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:46:25,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:46:25,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:46:26,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:46:26,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:46:26,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:46:26,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:46:26,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:46:26,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:46:26,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:46:26,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:46:26,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:46:26,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:46:26,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:46:26,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:46:26,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:46:26,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:46:26,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:46:26,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:46:26,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:46:26,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:46:26,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:46:26,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:46:26,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:46:26,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:46:26,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:46:26,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:46:26,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:46:26,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:46:26,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:46:26,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:46:26,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:46:26,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:46:26,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:46:26,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:46:26,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:46:26,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:46:26,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:46:26,142 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:46:26,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:46:26,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:46:26,147 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:46:26,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:46:26,148 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:46:26,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:46:26,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:46:26,149 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:46:26,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:46:26,151 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:46:26,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:46:26,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:46:26,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:46:26,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:46:26,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:46:26,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:46:26,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:46:26,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:46:26,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:46:26,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:46:26,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:46:26,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:46:26,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:46:26,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:46:26,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:46:26,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:46:26,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:46:26,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:46:26,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:46:26,156 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:46:26,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:46:26,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:46:26,157 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_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf1785c72f46b71ff38ed18504aab74c5c60cda53bca8d196fb5a21f47b63a1c [2022-11-18 20:46:26,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:46:26,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:46:26,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:46:26,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:46:26,542 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:46:26,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem12_label21.c [2022-11-18 20:46:26,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/data/532b30231/f27b849d01984b7aad2d7321e9f42c6c/FLAG1a1b89800 [2022-11-18 20:46:27,637 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:46:27,638 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/sv-benchmarks/c/eca-rers2012/Problem12_label21.c [2022-11-18 20:46:27,684 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/data/532b30231/f27b849d01984b7aad2d7321e9f42c6c/FLAG1a1b89800 [2022-11-18 20:46:28,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/data/532b30231/f27b849d01984b7aad2d7321e9f42c6c [2022-11-18 20:46:28,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:46:28,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:46:28,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:46:28,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:46:28,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:46:28,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:46:28" (1/1) ... [2022-11-18 20:46:28,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5aadd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:28, skipping insertion in model container [2022-11-18 20:46:28,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:46:28" (1/1) ... [2022-11-18 20:46:28,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:46:28,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:46:28,634 WARN L234 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_90b33596-ba98-408d-aa24-fc3696f952e1/sv-benchmarks/c/eca-rers2012/Problem12_label21.c[3054,3067] [2022-11-18 20:46:29,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:46:29,924 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:46:29,957 WARN L234 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_90b33596-ba98-408d-aa24-fc3696f952e1/sv-benchmarks/c/eca-rers2012/Problem12_label21.c[3054,3067] [2022-11-18 20:46:30,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:46:30,620 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:46:30,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30 WrapperNode [2022-11-18 20:46:30,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:46:30,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:46:30,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:46:30,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:46:30,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:30,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,117 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-18 20:46:31,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:46:31,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:46:31,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:46:31,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:46:31,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,735 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:46:31,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:46:31,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:46:31,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:46:31,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (1/1) ... [2022-11-18 20:46:31,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:46:31,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:46:31,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:46:31,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:46:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:46:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:46:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:46:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:46:32,132 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:46:32,135 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:46:38,285 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:46:38,310 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:46:38,310 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:46:38,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:46:38 BoogieIcfgContainer [2022-11-18 20:46:38,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:46:38,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:46:38,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:46:38,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:46:38,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:46:28" (1/3) ... [2022-11-18 20:46:38,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf16559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:46:38, skipping insertion in model container [2022-11-18 20:46:38,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:30" (2/3) ... [2022-11-18 20:46:38,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf16559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:46:38, skipping insertion in model container [2022-11-18 20:46:38,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:46:38" (3/3) ... [2022-11-18 20:46:38,329 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label21.c [2022-11-18 20:46:38,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:46:38,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:46:38,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:46:38,471 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;@19dc8923, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:46:38,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:46:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2022-11-18 20:46:38,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:46:38,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:46:38,493 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] [2022-11-18 20:46:38,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:46:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:46:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1644072970, now seen corresponding path program 1 times [2022-11-18 20:46:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:46:38,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280326482] [2022-11-18 20:46:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:46:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:46:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:46:38,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280326482] [2022-11-18 20:46:38,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280326482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:46:38,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:46:38,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:46:38,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460306082] [2022-11-18 20:46:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:46:38,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:46:38,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:46:38,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:46:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:46:38,876 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2022-11-18 20:46:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:46:44,998 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-11-18 20:46:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:46:45,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2022-11-18 20:46:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:46:45,042 INFO L225 Difference]: With dead ends: 2388 [2022-11-18 20:46:45,044 INFO L226 Difference]: Without dead ends: 1506 [2022-11-18 20:46:45,063 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 [2022-11-18 20:46:45,071 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 875 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:46:45,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-18 20:46:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-18 20:46:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-18 20:46:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 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) [2022-11-18 20:46:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2022-11-18 20:46:45,262 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 22 [2022-11-18 20:46:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:46:45,263 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2022-11-18 20:46:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2022-11-18 20:46:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2022-11-18 20:46:45,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 20:46:45,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:46:45,267 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:46:45,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:46:45,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:46:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:46:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1357231810, now seen corresponding path program 1 times [2022-11-18 20:46:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:46:45,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228748642] [2022-11-18 20:46:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:45,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:46:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:46:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:46:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228748642] [2022-11-18 20:46:45,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228748642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:46:45,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:46:45,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:46:45,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941852058] [2022-11-18 20:46:45,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:46:45,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:46:45,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:46:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:46:45,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:46:45,635 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2022-11-18 20:46:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:46:50,852 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2022-11-18 20:46:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:46:50,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 91 [2022-11-18 20:46:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:46:50,863 INFO L225 Difference]: With dead ends: 3761 [2022-11-18 20:46:50,864 INFO L226 Difference]: Without dead ends: 2257 [2022-11-18 20:46:50,877 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 [2022-11-18 20:46:50,879 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:46:50,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-18 20:46:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-11-18 20:46:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-11-18 20:46:50,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 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) [2022-11-18 20:46:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2022-11-18 20:46:50,953 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 91 [2022-11-18 20:46:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:46:50,957 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2022-11-18 20:46:50,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2022-11-18 20:46:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2022-11-18 20:46:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:46:50,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:46:50,974 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:46:50,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:46:50,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:46:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:46:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash -186015367, now seen corresponding path program 1 times [2022-11-18 20:46:50,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:46:50,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18560411] [2022-11-18 20:46:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:50,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:46:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:46:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:46:51,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18560411] [2022-11-18 20:46:51,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18560411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:46:51,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723263073] [2022-11-18 20:46:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:51,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:46:51,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:46:51,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:46:51,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:46:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:51,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:46:51,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:46:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:46:51,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:46:51,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723263073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:46:51,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:46:51,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 20:46:51,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97123869] [2022-11-18 20:46:51,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:46:51,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:46:51,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:46:51,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:46:51,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:46:51,705 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-11-18 20:46:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:46:57,480 INFO L93 Difference]: Finished difference Result 6765 states and 9754 transitions. [2022-11-18 20:46:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:46:57,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-11-18 20:46:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:46:57,500 INFO L225 Difference]: With dead ends: 6765 [2022-11-18 20:46:57,500 INFO L226 Difference]: Without dead ends: 4510 [2022-11-18 20:46:57,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:46:57,506 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 734 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:46:57,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1378 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-18 20:46:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-11-18 20:46:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2022-11-18 20:46:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.3714792636948325) internal successors, (6184), 4509 states have internal predecessors, (6184), 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) [2022-11-18 20:46:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 6184 transitions. [2022-11-18 20:46:57,618 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 6184 transitions. Word has length 93 [2022-11-18 20:46:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:46:57,621 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 6184 transitions. [2022-11-18 20:46:57,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-11-18 20:46:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 6184 transitions. [2022-11-18 20:46:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 20:46:57,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:46:57,627 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:46:57,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:46:57,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:46:57,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:46:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:46:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash 854360618, now seen corresponding path program 1 times [2022-11-18 20:46:57,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:46:57,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891441870] [2022-11-18 20:46:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:57,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:46:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:46:58,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:46:58,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891441870] [2022-11-18 20:46:58,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891441870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:46:58,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:46:58,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:46:58,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886810577] [2022-11-18 20:46:58,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:46:58,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:46:58,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:46:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:46:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:46:58,300 INFO L87 Difference]: Start difference. First operand 4510 states and 6184 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-11-18 20:47:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:05,697 INFO L93 Difference]: Finished difference Result 9769 states and 13273 transitions. [2022-11-18 20:47:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:47:05,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 99 [2022-11-18 20:47:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:05,718 INFO L225 Difference]: With dead ends: 9769 [2022-11-18 20:47:05,718 INFO L226 Difference]: Without dead ends: 5261 [2022-11-18 20:47:05,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:47:05,726 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 2182 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4828 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 5487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 4828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:05,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 240 Invalid, 5487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 4828 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-18 20:47:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2022-11-18 20:47:05,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2022-11-18 20:47:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.2979087452471483) internal successors, (6827), 5260 states have internal predecessors, (6827), 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) [2022-11-18 20:47:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6827 transitions. [2022-11-18 20:47:05,866 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6827 transitions. Word has length 99 [2022-11-18 20:47:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:05,868 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 6827 transitions. [2022-11-18 20:47:05,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-11-18 20:47:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6827 transitions. [2022-11-18 20:47:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-18 20:47:05,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:05,874 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:05,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:47:05,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:05,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:05,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1142983397, now seen corresponding path program 1 times [2022-11-18 20:47:05,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:05,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541080410] [2022-11-18 20:47:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:05,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:06,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541080410] [2022-11-18 20:47:06,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541080410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:06,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:06,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:06,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259396435] [2022-11-18 20:47:06,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:06,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:06,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:06,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:06,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:06,442 INFO L87 Difference]: Start difference. First operand 5261 states and 6827 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 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) [2022-11-18 20:47:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:12,275 INFO L93 Difference]: Finished difference Result 12810 states and 17221 transitions. [2022-11-18 20:47:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:47:12,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 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 170 [2022-11-18 20:47:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:12,303 INFO L225 Difference]: With dead ends: 12810 [2022-11-18 20:47:12,304 INFO L226 Difference]: Without dead ends: 8265 [2022-11-18 20:47:12,309 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 [2022-11-18 20:47:12,311 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:12,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 612 Invalid, 3772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-18 20:47:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2022-11-18 20:47:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 7514. [2022-11-18 20:47:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.213097298016771) internal successors, (9114), 7513 states have internal predecessors, (9114), 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) [2022-11-18 20:47:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 9114 transitions. [2022-11-18 20:47:12,467 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 9114 transitions. Word has length 170 [2022-11-18 20:47:12,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:12,468 INFO L495 AbstractCegarLoop]: Abstraction has 7514 states and 9114 transitions. [2022-11-18 20:47:12,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 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) [2022-11-18 20:47:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 9114 transitions. [2022-11-18 20:47:12,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-18 20:47:12,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:12,473 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:12,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:47:12,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1109781792, now seen corresponding path program 1 times [2022-11-18 20:47:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:12,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793712334] [2022-11-18 20:47:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-18 20:47:12,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:12,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793712334] [2022-11-18 20:47:12,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793712334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:12,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:12,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:47:12,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118233892] [2022-11-18 20:47:12,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:12,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:47:12,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:12,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:47:12,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:47:12,775 INFO L87 Difference]: Start difference. First operand 7514 states and 9114 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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) [2022-11-18 20:47:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:17,609 INFO L93 Difference]: Finished difference Result 18783 states and 23429 transitions. [2022-11-18 20:47:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:47:17,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 244 [2022-11-18 20:47:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:17,648 INFO L225 Difference]: With dead ends: 18783 [2022-11-18 20:47:17,648 INFO L226 Difference]: Without dead ends: 12022 [2022-11-18 20:47:17,655 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 [2022-11-18 20:47:17,656 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:17,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-18 20:47:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12022 states. [2022-11-18 20:47:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12022 to 11269. [2022-11-18 20:47:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 11268 states have (on average 1.1975505857294995) internal successors, (13494), 11268 states have internal predecessors, (13494), 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) [2022-11-18 20:47:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13494 transitions. [2022-11-18 20:47:17,900 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13494 transitions. Word has length 244 [2022-11-18 20:47:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:17,900 INFO L495 AbstractCegarLoop]: Abstraction has 11269 states and 13494 transitions. [2022-11-18 20:47:17,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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) [2022-11-18 20:47:17,902 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13494 transitions. [2022-11-18 20:47:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-18 20:47:17,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:17,909 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 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] [2022-11-18 20:47:17,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:47:17,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:17,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:17,910 INFO L85 PathProgramCache]: Analyzing trace with hash -206962365, now seen corresponding path program 1 times [2022-11-18 20:47:17,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:17,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099021856] [2022-11-18 20:47:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:17,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 20:47:19,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:19,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099021856] [2022-11-18 20:47:19,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099021856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:19,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:19,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:19,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406406481] [2022-11-18 20:47:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:19,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:47:19,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:47:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:47:19,333 INFO L87 Difference]: Start difference. First operand 11269 states and 13494 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-18 20:47:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:24,055 INFO L93 Difference]: Finished difference Result 26291 states and 32289 transitions. [2022-11-18 20:47:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:47:24,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 311 [2022-11-18 20:47:24,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:24,092 INFO L225 Difference]: With dead ends: 26291 [2022-11-18 20:47:24,092 INFO L226 Difference]: Without dead ends: 15775 [2022-11-18 20:47:24,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:47:24,106 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 829 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:24,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 142 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:47:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2022-11-18 20:47:24,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 15775. [2022-11-18 20:47:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2147838214783822) internal successors, (19162), 15774 states have internal predecessors, (19162), 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) [2022-11-18 20:47:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 19162 transitions. [2022-11-18 20:47:24,376 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 19162 transitions. Word has length 311 [2022-11-18 20:47:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:24,377 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 19162 transitions. [2022-11-18 20:47:24,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-18 20:47:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 19162 transitions. [2022-11-18 20:47:24,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-18 20:47:24,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:24,386 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:24,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:47:24,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1322309612, now seen corresponding path program 1 times [2022-11-18 20:47:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:24,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177010198] [2022-11-18 20:47:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:24,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 59 proven. 108 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-18 20:47:25,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:25,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177010198] [2022-11-18 20:47:25,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177010198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:47:25,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593281674] [2022-11-18 20:47:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:25,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:47:25,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:25,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:47:25,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:47:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:25,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:47:25,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:47:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 20:47:25,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:47:25,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593281674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:25,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:47:25,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-18 20:47:25,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068108980] [2022-11-18 20:47:25,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:25,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:47:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:47:25,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:47:25,834 INFO L87 Difference]: Start difference. First operand 15775 states and 19162 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2022-11-18 20:47:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:30,416 INFO L93 Difference]: Finished difference Result 34552 states and 42441 transitions. [2022-11-18 20:47:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:47:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 340 [2022-11-18 20:47:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:30,463 INFO L225 Difference]: With dead ends: 34552 [2022-11-18 20:47:30,463 INFO L226 Difference]: Without dead ends: 19530 [2022-11-18 20:47:30,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:47:30,481 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 763 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:30,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 238 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-18 20:47:30,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2022-11-18 20:47:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 19530. [2022-11-18 20:47:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19530 states, 19529 states have (on average 1.2128629218085925) internal successors, (23686), 19529 states have internal predecessors, (23686), 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) [2022-11-18 20:47:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19530 states to 19530 states and 23686 transitions. [2022-11-18 20:47:30,788 INFO L78 Accepts]: Start accepts. Automaton has 19530 states and 23686 transitions. Word has length 340 [2022-11-18 20:47:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:30,789 INFO L495 AbstractCegarLoop]: Abstraction has 19530 states and 23686 transitions. [2022-11-18 20:47:30,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2022-11-18 20:47:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 19530 states and 23686 transitions. [2022-11-18 20:47:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-11-18 20:47:30,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:30,798 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:30,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:47:31,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:47:31,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash 186452354, now seen corresponding path program 1 times [2022-11-18 20:47:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:31,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853787617] [2022-11-18 20:47:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:47:31,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:31,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853787617] [2022-11-18 20:47:31,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853787617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:31,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:31,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:31,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403720836] [2022-11-18 20:47:31,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:31,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:47:31,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:31,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:47:31,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:47:31,541 INFO L87 Difference]: Start difference. First operand 19530 states and 23686 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2022-11-18 20:47:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:36,735 INFO L93 Difference]: Finished difference Result 48070 states and 58712 transitions. [2022-11-18 20:47:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:47:36,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 349 [2022-11-18 20:47:36,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:36,786 INFO L225 Difference]: With dead ends: 48070 [2022-11-18 20:47:36,786 INFO L226 Difference]: Without dead ends: 29293 [2022-11-18 20:47:36,808 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 [2022-11-18 20:47:36,809 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:36,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1247 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-18 20:47:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2022-11-18 20:47:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 27791. [2022-11-18 20:47:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27791 states, 27790 states have (on average 1.2121266642677222) internal successors, (33685), 27790 states have internal predecessors, (33685), 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) [2022-11-18 20:47:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27791 states to 27791 states and 33685 transitions. [2022-11-18 20:47:37,372 INFO L78 Accepts]: Start accepts. Automaton has 27791 states and 33685 transitions. Word has length 349 [2022-11-18 20:47:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:37,373 INFO L495 AbstractCegarLoop]: Abstraction has 27791 states and 33685 transitions. [2022-11-18 20:47:37,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2022-11-18 20:47:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27791 states and 33685 transitions. [2022-11-18 20:47:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-18 20:47:37,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:37,382 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:37,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:47:37,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:37,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1295515256, now seen corresponding path program 1 times [2022-11-18 20:47:37,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:37,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95020646] [2022-11-18 20:47:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:37,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-18 20:47:37,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:37,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95020646] [2022-11-18 20:47:37,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95020646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:37,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:37,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061597446] [2022-11-18 20:47:37,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:37,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:47:37,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:47:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:47:37,917 INFO L87 Difference]: Start difference. First operand 27791 states and 33685 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2022-11-18 20:47:43,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:43,033 INFO L93 Difference]: Finished difference Result 63841 states and 78433 transitions. [2022-11-18 20:47:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:47:43,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 353 [2022-11-18 20:47:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:43,080 INFO L225 Difference]: With dead ends: 63841 [2022-11-18 20:47:43,080 INFO L226 Difference]: Without dead ends: 36803 [2022-11-18 20:47:43,092 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 [2022-11-18 20:47:43,093 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 853 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:43,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1117 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:47:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36803 states. [2022-11-18 20:47:43,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 36803. [2022-11-18 20:47:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36803 states, 36802 states have (on average 1.2022444432367807) internal successors, (44245), 36802 states have internal predecessors, (44245), 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) [2022-11-18 20:47:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36803 states to 36803 states and 44245 transitions. [2022-11-18 20:47:43,650 INFO L78 Accepts]: Start accepts. Automaton has 36803 states and 44245 transitions. Word has length 353 [2022-11-18 20:47:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:43,651 INFO L495 AbstractCegarLoop]: Abstraction has 36803 states and 44245 transitions. [2022-11-18 20:47:43,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2022-11-18 20:47:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 36803 states and 44245 transitions. [2022-11-18 20:47:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-18 20:47:43,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:43,667 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:43,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:47:43,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash 192332022, now seen corresponding path program 1 times [2022-11-18 20:47:43,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:43,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009192096] [2022-11-18 20:47:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:43,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-18 20:47:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009192096] [2022-11-18 20:47:44,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009192096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:44,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:44,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:44,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990038592] [2022-11-18 20:47:44,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:44,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:47:44,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:47:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:47:44,076 INFO L87 Difference]: Start difference. First operand 36803 states and 44245 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2022-11-18 20:47:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:49,448 INFO L93 Difference]: Finished difference Result 102893 states and 124480 transitions. [2022-11-18 20:47:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:47:49,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 408 [2022-11-18 20:47:49,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:49,522 INFO L225 Difference]: With dead ends: 102893 [2022-11-18 20:47:49,522 INFO L226 Difference]: Without dead ends: 66843 [2022-11-18 20:47:49,551 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 [2022-11-18 20:47:49,552 INFO L413 NwaCegarLoop]: 1294 mSDtfsCounter, 682 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:49,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1302 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-18 20:47:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66843 states. [2022-11-18 20:47:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66843 to 64590. [2022-11-18 20:47:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64590 states, 64589 states have (on average 1.1479354069578411) internal successors, (74144), 64589 states have internal predecessors, (74144), 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) [2022-11-18 20:47:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64590 states to 64590 states and 74144 transitions. [2022-11-18 20:47:50,618 INFO L78 Accepts]: Start accepts. Automaton has 64590 states and 74144 transitions. Word has length 408 [2022-11-18 20:47:50,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:50,619 INFO L495 AbstractCegarLoop]: Abstraction has 64590 states and 74144 transitions. [2022-11-18 20:47:50,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2022-11-18 20:47:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 64590 states and 74144 transitions. [2022-11-18 20:47:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-11-18 20:47:50,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:50,639 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:50,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:47:50,640 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:50,641 INFO L85 PathProgramCache]: Analyzing trace with hash 690551164, now seen corresponding path program 1 times [2022-11-18 20:47:50,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:50,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615977876] [2022-11-18 20:47:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 513 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-18 20:47:51,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:51,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615977876] [2022-11-18 20:47:51,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615977876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:51,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:51,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:51,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85408180] [2022-11-18 20:47:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:51,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:47:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:51,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:47:51,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:47:51,331 INFO L87 Difference]: Start difference. First operand 64590 states and 74144 transitions. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2022-11-18 20:47:56,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:56,588 INFO L93 Difference]: Finished difference Result 129929 states and 149046 transitions. [2022-11-18 20:47:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:47:56,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 453 [2022-11-18 20:47:56,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:56,655 INFO L225 Difference]: With dead ends: 129929 [2022-11-18 20:47:56,655 INFO L226 Difference]: Without dead ends: 66092 [2022-11-18 20:47:56,676 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 [2022-11-18 20:47:56,677 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 724 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:56,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 145 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:47:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66092 states. [2022-11-18 20:47:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66092 to 64590. [2022-11-18 20:47:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64590 states, 64589 states have (on average 1.141664989394479) internal successors, (73739), 64589 states have internal predecessors, (73739), 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) [2022-11-18 20:47:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64590 states to 64590 states and 73739 transitions. [2022-11-18 20:47:57,681 INFO L78 Accepts]: Start accepts. Automaton has 64590 states and 73739 transitions. Word has length 453 [2022-11-18 20:47:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:57,682 INFO L495 AbstractCegarLoop]: Abstraction has 64590 states and 73739 transitions. [2022-11-18 20:47:57,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2022-11-18 20:47:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 64590 states and 73739 transitions. [2022-11-18 20:47:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-18 20:47:57,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:57,702 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:57,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:47:57,703 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash -269594508, now seen corresponding path program 1 times [2022-11-18 20:47:57,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356886606] [2022-11-18 20:47:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:57,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-18 20:47:58,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356886606] [2022-11-18 20:47:58,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356886606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:58,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:58,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:58,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020196684] [2022-11-18 20:47:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:58,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:47:58,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:58,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:47:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:47:58,383 INFO L87 Difference]: Start difference. First operand 64590 states and 73739 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2022-11-18 20:48:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:03,792 INFO L93 Difference]: Finished difference Result 159218 states and 183921 transitions. [2022-11-18 20:48:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:48:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 457 [2022-11-18 20:48:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:03,916 INFO L225 Difference]: With dead ends: 159218 [2022-11-18 20:48:03,916 INFO L226 Difference]: Without dead ends: 95381 [2022-11-18 20:48:03,947 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 [2022-11-18 20:48:03,948 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 772 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:03,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 518 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-18 20:48:04,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95381 states. [2022-11-18 20:48:05,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95381 to 91626. [2022-11-18 20:48:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91626 states, 91625 states have (on average 1.1285238744884039) internal successors, (103401), 91625 states have internal predecessors, (103401), 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) [2022-11-18 20:48:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91626 states to 91626 states and 103401 transitions. [2022-11-18 20:48:05,403 INFO L78 Accepts]: Start accepts. Automaton has 91626 states and 103401 transitions. Word has length 457 [2022-11-18 20:48:05,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:05,403 INFO L495 AbstractCegarLoop]: Abstraction has 91626 states and 103401 transitions. [2022-11-18 20:48:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2022-11-18 20:48:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 91626 states and 103401 transitions. [2022-11-18 20:48:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2022-11-18 20:48:05,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:05,428 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-18 20:48:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:48:05,429 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:05,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1979372534, now seen corresponding path program 1 times [2022-11-18 20:48:05,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:05,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532136244] [2022-11-18 20:48:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:05,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2022-11-18 20:48:06,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:06,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532136244] [2022-11-18 20:48:06,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532136244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:06,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:06,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:06,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824039113] [2022-11-18 20:48:06,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:06,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:48:06,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:06,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:48:06,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:48:06,240 INFO L87 Difference]: Start difference. First operand 91626 states and 103401 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2022-11-18 20:48:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:12,463 INFO L93 Difference]: Finished difference Result 253093 states and 286565 transitions. [2022-11-18 20:48:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:48:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 496 [2022-11-18 20:48:12,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:12,688 INFO L225 Difference]: With dead ends: 253093 [2022-11-18 20:48:12,688 INFO L226 Difference]: Without dead ends: 162220 [2022-11-18 20:48:12,740 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 [2022-11-18 20:48:12,741 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 764 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:12,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 517 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 20:48:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162220 states. [2022-11-18 20:48:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162220 to 157714. [2022-11-18 20:48:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157714 states, 157713 states have (on average 1.1117092440065182) internal successors, (175331), 157713 states have internal predecessors, (175331), 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) [2022-11-18 20:48:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157714 states to 157714 states and 175331 transitions. [2022-11-18 20:48:14,973 INFO L78 Accepts]: Start accepts. Automaton has 157714 states and 175331 transitions. Word has length 496 [2022-11-18 20:48:14,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:14,974 INFO L495 AbstractCegarLoop]: Abstraction has 157714 states and 175331 transitions. [2022-11-18 20:48:14,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2022-11-18 20:48:14,974 INFO L276 IsEmpty]: Start isEmpty. Operand 157714 states and 175331 transitions. [2022-11-18 20:48:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2022-11-18 20:48:15,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:15,006 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:15,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:48:15,006 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:15,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:15,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1875944027, now seen corresponding path program 1 times [2022-11-18 20:48:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:15,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271330567] [2022-11-18 20:48:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:15,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 225 proven. 777 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 20:48:17,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:17,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271330567] [2022-11-18 20:48:17,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271330567] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:17,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714288358] [2022-11-18 20:48:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:17,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:17,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:17,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:17,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:48:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:17,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:48:17,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-11-18 20:48:18,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:48:18,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714288358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:18,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:48:18,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 20:48:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995409904] [2022-11-18 20:48:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:18,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:48:18,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:48:18,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:48:18,027 INFO L87 Difference]: Start difference. First operand 157714 states and 175331 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2022-11-18 20:48:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:23,494 INFO L93 Difference]: Finished difference Result 331948 states and 369098 transitions. [2022-11-18 20:48:23,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:48:23,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 647 [2022-11-18 20:48:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:23,747 INFO L225 Difference]: With dead ends: 331948 [2022-11-18 20:48:23,747 INFO L226 Difference]: Without dead ends: 174987 [2022-11-18 20:48:23,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 646 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:48:23,845 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 852 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:23,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1117 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:48:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174987 states. [2022-11-18 20:48:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174987 to 139690. [2022-11-18 20:48:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139690 states, 139689 states have (on average 1.110774649399738) internal successors, (155163), 139689 states have internal predecessors, (155163), 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) [2022-11-18 20:48:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139690 states to 139690 states and 155163 transitions. [2022-11-18 20:48:26,326 INFO L78 Accepts]: Start accepts. Automaton has 139690 states and 155163 transitions. Word has length 647 [2022-11-18 20:48:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:26,327 INFO L495 AbstractCegarLoop]: Abstraction has 139690 states and 155163 transitions. [2022-11-18 20:48:26,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2022-11-18 20:48:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 139690 states and 155163 transitions. [2022-11-18 20:48:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-11-18 20:48:26,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:26,375 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:26,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:26,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b33596-ba98-408d-aa24-fc3696f952e1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:26,576 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:26,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 180293881, now seen corresponding path program 1 times [2022-11-18 20:48:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:26,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692426460] [2022-11-18 20:48:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-18 20:48:27,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:27,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692426460] [2022-11-18 20:48:27,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692426460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:27,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:27,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:27,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323679559] [2022-11-18 20:48:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:27,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:48:27,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:48:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:48:27,780 INFO L87 Difference]: Start difference. First operand 139690 states and 155163 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2022-11-18 20:48:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:33,058 INFO L93 Difference]: Finished difference Result 282382 states and 313409 transitions. [2022-11-18 20:48:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:48:33,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 703 [2022-11-18 20:48:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:33,211 INFO L225 Difference]: With dead ends: 282382 [2022-11-18 20:48:33,211 INFO L226 Difference]: Without dead ends: 139690 [2022-11-18 20:48:33,260 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 [2022-11-18 20:48:33,261 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 468 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:33,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1235 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:48:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139690 states. [2022-11-18 20:48:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139690 to 136686. [2022-11-18 20:48:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136686 states, 136685 states have (on average 1.0730365438782603) internal successors, (146668), 136685 states have internal predecessors, (146668), 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) [2022-11-18 20:48:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136686 states to 136686 states and 146668 transitions. [2022-11-18 20:48:35,632 INFO L78 Accepts]: Start accepts. Automaton has 136686 states and 146668 transitions. Word has length 703 [2022-11-18 20:48:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:35,633 INFO L495 AbstractCegarLoop]: Abstraction has 136686 states and 146668 transitions. [2022-11-18 20:48:35,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2022-11-18 20:48:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 136686 states and 146668 transitions. [2022-11-18 20:48:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2022-11-18 20:48:35,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:35,681 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:35,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:48:35,682 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash -738751208, now seen corresponding path program 1 times [2022-11-18 20:48:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:35,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660606971] [2022-11-18 20:48:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 613 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-18 20:48:36,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:36,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660606971] [2022-11-18 20:48:36,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660606971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:36,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:36,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:36,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133074125] [2022-11-18 20:48:36,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:36,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:48:36,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:48:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:48:36,949 INFO L87 Difference]: Start difference. First operand 136686 states and 146668 transitions. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2022-11-18 20:48:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:42,351 INFO L93 Difference]: Finished difference Result 272619 states and 292578 transitions. [2022-11-18 20:48:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:48:42,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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 732 [2022-11-18 20:48:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:42,495 INFO L225 Difference]: With dead ends: 272619 [2022-11-18 20:48:42,495 INFO L226 Difference]: Without dead ends: 136686 [2022-11-18 20:48:42,541 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 [2022-11-18 20:48:42,541 INFO L413 NwaCegarLoop]: 1263 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:42,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1271 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:48:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136686 states. [2022-11-18 20:48:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136686 to 134433. [2022-11-18 20:48:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134433 states, 134432 states have (on average 1.0553885979528683) internal successors, (141878), 134432 states have internal predecessors, (141878), 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) [2022-11-18 20:48:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134433 states to 134433 states and 141878 transitions. [2022-11-18 20:48:44,803 INFO L78 Accepts]: Start accepts. Automaton has 134433 states and 141878 transitions. Word has length 732 [2022-11-18 20:48:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:44,803 INFO L495 AbstractCegarLoop]: Abstraction has 134433 states and 141878 transitions. [2022-11-18 20:48:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2022-11-18 20:48:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 134433 states and 141878 transitions. [2022-11-18 20:48:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2022-11-18 20:48:44,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:44,869 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:44,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:48:44,869 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:44,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:44,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1134992907, now seen corresponding path program 1 times [2022-11-18 20:48:44,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:44,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824060205] [2022-11-18 20:48:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:44,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 870 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:48:48,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:48,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824060205] [2022-11-18 20:48:48,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824060205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:48,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:48,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:48:48,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031392476] [2022-11-18 20:48:48,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:48,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:48:48,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:48:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:48:48,027 INFO L87 Difference]: Start difference. First operand 134433 states and 141878 transitions. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 5 states have internal predecessors, (788), 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) [2022-11-18 20:48:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:58,602 INFO L93 Difference]: Finished difference Result 284206 states and 300009 transitions. [2022-11-18 20:48:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:48:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 5 states have internal predecessors, (788), 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 807 [2022-11-18 20:48:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:58,783 INFO L225 Difference]: With dead ends: 284206 [2022-11-18 20:48:58,783 INFO L226 Difference]: Without dead ends: 150526 [2022-11-18 20:48:58,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:58,842 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 2526 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 7601 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 8405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 7601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:58,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 535 Invalid, 8405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 7601 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-18 20:48:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150526 states. [2022-11-18 20:49:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150526 to 140441. [2022-11-18 20:49:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140441 states, 140440 states have (on average 1.0560524067217316) internal successors, (148312), 140440 states have internal predecessors, (148312), 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) [2022-11-18 20:49:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140441 states to 140441 states and 148312 transitions. [2022-11-18 20:49:01,038 INFO L78 Accepts]: Start accepts. Automaton has 140441 states and 148312 transitions. Word has length 807 [2022-11-18 20:49:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:01,039 INFO L495 AbstractCegarLoop]: Abstraction has 140441 states and 148312 transitions. [2022-11-18 20:49:01,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 5 states have internal predecessors, (788), 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) [2022-11-18 20:49:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 140441 states and 148312 transitions. [2022-11-18 20:49:01,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2022-11-18 20:49:01,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:01,071 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:01,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:49:01,072 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:01,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1839008441, now seen corresponding path program 1 times [2022-11-18 20:49:01,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:01,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560606817] [2022-11-18 20:49:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:01,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-18 20:49:03,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:03,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560606817] [2022-11-18 20:49:03,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560606817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:03,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:03,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931062937] [2022-11-18 20:49:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:03,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:03,209 INFO L87 Difference]: Start difference. First operand 140441 states and 148312 transitions. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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) [2022-11-18 20:49:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:08,098 INFO L93 Difference]: Finished difference Result 295900 states and 312687 transitions. [2022-11-18 20:49:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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 830 [2022-11-18 20:49:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:08,283 INFO L225 Difference]: With dead ends: 295900 [2022-11-18 20:49:08,284 INFO L226 Difference]: Without dead ends: 156212 [2022-11-18 20:49:08,339 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 [2022-11-18 20:49:08,340 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 583 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:08,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1349 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-18 20:49:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156212 states.