./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN --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 db95babf73fb1944c5f5cbb1a7fc98d0691e2dd292f8f012fa0cfbffe032486e --- 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-6b4ec56 [2022-11-20 09:28:06,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:06,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:06,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:06,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:06,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:06,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:06,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:06,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:06,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:06,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:06,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:06,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:06,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:06,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:06,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:06,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:06,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:06,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:06,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:06,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:06,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:06,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:06,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:06,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:06,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:06,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:06,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:06,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:06,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:06,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:06,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:06,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:06,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:06,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:06,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:06,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:06,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:06,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:06,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:06,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:06,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:28:06,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:06,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:06,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:06,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:06,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:06,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:06,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:06,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:06,938 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:06,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:06,939 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:28:06,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:06,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:28:06,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:06,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:28:06,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:06,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:28:06,941 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:28:06,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:28:06,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:06,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:28:06,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:06,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:06,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:06,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:06,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:06,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:06,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:28:06,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:06,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:06,944 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:28:06,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:28:06,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:28:06,945 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_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db95babf73fb1944c5f5cbb1a7fc98d0691e2dd292f8f012fa0cfbffe032486e [2022-11-20 09:28:07,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:07,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:07,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:07,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:07,275 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:07,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem13_label05.c [2022-11-20 09:28:10,350 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:10,898 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:10,899 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/sv-benchmarks/c/eca-rers2012/Problem13_label05.c [2022-11-20 09:28:10,935 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/data/b111409cb/3bbe511494124daab58e300ebaa70bfa/FLAGd16341337 [2022-11-20 09:28:10,958 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/data/b111409cb/3bbe511494124daab58e300ebaa70bfa [2022-11-20 09:28:10,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:10,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:10,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:10,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:10,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:10,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:10" (1/1) ... [2022-11-20 09:28:10,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2755cfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10, skipping insertion in model container [2022-11-20 09:28:10,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:10" (1/1) ... [2022-11-20 09:28:10,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:11,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:11,501 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/sv-benchmarks/c/eca-rers2012/Problem13_label05.c[6050,6063] [2022-11-20 09:28:12,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:12,623 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:12,657 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/sv-benchmarks/c/eca-rers2012/Problem13_label05.c[6050,6063] [2022-11-20 09:28:13,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:13,398 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:13,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13 WrapperNode [2022-11-20 09:28:13,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:13,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:13,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:13,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:13,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,127 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-20 09:28:14,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:14,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:14,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:14,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:14,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,749 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:14,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:14,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:14,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:14,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:14,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:14,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:15,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:28:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:28:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:15,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:15,222 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:15,224 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:21,782 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:21,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:21,805 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:28:21,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:21 BoogieIcfgContainer [2022-11-20 09:28:21,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:21,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:21,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:21,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:21,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:10" (1/3) ... [2022-11-20 09:28:21,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383deae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:21, skipping insertion in model container [2022-11-20 09:28:21,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (2/3) ... [2022-11-20 09:28:21,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383deae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:21, skipping insertion in model container [2022-11-20 09:28:21,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:21" (3/3) ... [2022-11-20 09:28:21,819 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05.c [2022-11-20 09:28:21,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:21,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:28:21,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:21,918 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;@c7cd3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:21,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:28:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 09:28:21,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:21,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:21,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:21,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1824112922, now seen corresponding path program 1 times [2022-11-20 09:28:21,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:21,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130629453] [2022-11-20 09:28:21,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:21,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:22,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:22,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130629453] [2022-11-20 09:28:22,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130629453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:22,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:22,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:22,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053009524] [2022-11-20 09:28:22,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:22,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:22,351 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2022-11-20 09:28:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:28,460 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-11-20 09:28:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:28,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2022-11-20 09:28:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:28,487 INFO L225 Difference]: With dead ends: 3082 [2022-11-20 09:28:28,488 INFO L226 Difference]: Without dead ends: 1899 [2022-11-20 09:28:28,495 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 [2022-11-20 09:28:28,498 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 997 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:28,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-20 09:28:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-11-20 09:28:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-11-20 09:28:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-11-20 09:28:28,632 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 42 [2022-11-20 09:28:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:28,634 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-11-20 09:28:28,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2022-11-20 09:28:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-11-20 09:28:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 09:28:28,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:28,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 09:28:28,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:28,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash -274088414, now seen corresponding path program 1 times [2022-11-20 09:28:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:28,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414918037] [2022-11-20 09:28:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:28,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:28,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414918037] [2022-11-20 09:28:28,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414918037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:28,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:28,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:28,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890077656] [2022-11-20 09:28:28,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:28,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:28,868 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2022-11-20 09:28:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:34,098 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-11-20 09:28:34,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:34,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 107 [2022-11-20 09:28:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:34,125 INFO L225 Difference]: With dead ends: 5384 [2022-11-20 09:28:34,125 INFO L226 Difference]: Without dead ends: 3492 [2022-11-20 09:28:34,129 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 [2022-11-20 09:28:34,142 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:34,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 09:28:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-11-20 09:28:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-11-20 09:28:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-11-20 09:28:34,256 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 107 [2022-11-20 09:28:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:34,261 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-11-20 09:28:34,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2022-11-20 09:28:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-11-20 09:28:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-20 09:28:34,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:34,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 09:28:34,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:28:34,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1754993373, now seen corresponding path program 1 times [2022-11-20 09:28:34,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:34,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451932530] [2022-11-20 09:28:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:34,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451932530] [2022-11-20 09:28:34,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451932530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:34,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:34,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904346527] [2022-11-20 09:28:34,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:34,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:34,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:34,527 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2022-11-20 09:28:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:39,396 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-11-20 09:28:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:39,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 109 [2022-11-20 09:28:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:39,418 INFO L225 Difference]: With dead ends: 10169 [2022-11-20 09:28:39,419 INFO L226 Difference]: Without dead ends: 6680 [2022-11-20 09:28:39,423 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 [2022-11-20 09:28:39,424 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:39,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 09:28:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-11-20 09:28:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-11-20 09:28:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-11-20 09:28:39,560 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 109 [2022-11-20 09:28:39,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:39,560 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-11-20 09:28:39,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2022-11-20 09:28:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-11-20 09:28:39,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 09:28:39,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:39,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 09:28:39,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:28:39,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:39,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash -569575153, now seen corresponding path program 1 times [2022-11-20 09:28:39,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:39,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351831284] [2022-11-20 09:28:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:39,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:39,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:39,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351831284] [2022-11-20 09:28:39,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351831284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:39,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:39,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:39,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201576678] [2022-11-20 09:28:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:39,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:39,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:39,999 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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) [2022-11-20 09:28:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:44,185 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2022-11-20 09:28:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:44,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2022-11-20 09:28:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:44,209 INFO L225 Difference]: With dead ends: 14123 [2022-11-20 09:28:44,209 INFO L226 Difference]: Without dead ends: 7456 [2022-11-20 09:28:44,215 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 [2022-11-20 09:28:44,217 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:44,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 09:28:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2022-11-20 09:28:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2022-11-20 09:28:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2022-11-20 09:28:44,360 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 153 [2022-11-20 09:28:44,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:44,361 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2022-11-20 09:28:44,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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) [2022-11-20 09:28:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2022-11-20 09:28:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 09:28:44,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:44,364 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 09:28:44,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:28:44,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:44,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash -955399323, now seen corresponding path program 1 times [2022-11-20 09:28:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:44,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395486362] [2022-11-20 09:28:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 09:28:44,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:44,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395486362] [2022-11-20 09:28:44,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395486362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:44,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:44,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352966027] [2022-11-20 09:28:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:44,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:44,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:44,595 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:49,630 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2022-11-20 09:28:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:49,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2022-11-20 09:28:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:49,680 INFO L225 Difference]: With dead ends: 19656 [2022-11-20 09:28:49,680 INFO L226 Difference]: Without dead ends: 12989 [2022-11-20 09:28:49,688 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 [2022-11-20 09:28:49,690 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:49,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 09:28:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2022-11-20 09:28:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2022-11-20 09:28:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:49,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2022-11-20 09:28:49,913 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 167 [2022-11-20 09:28:49,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:49,914 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2022-11-20 09:28:49,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2022-11-20 09:28:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-20 09:28:49,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:49,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:49,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:28:49,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:49,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1145927935, now seen corresponding path program 1 times [2022-11-20 09:28:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:49,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082090823] [2022-11-20 09:28:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:49,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 09:28:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082090823] [2022-11-20 09:28:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082090823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:50,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:50,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:50,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132800342] [2022-11-20 09:28:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:50,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:50,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:50,367 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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) [2022-11-20 09:28:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:54,992 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2022-11-20 09:28:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:55,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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 254 [2022-11-20 09:28:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:55,034 INFO L225 Difference]: With dead ends: 22792 [2022-11-20 09:28:55,034 INFO L226 Difference]: Without dead ends: 12980 [2022-11-20 09:28:55,044 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 [2022-11-20 09:28:55,046 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:55,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 09:28:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2022-11-20 09:28:55,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2022-11-20 09:28:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2022-11-20 09:28:55,320 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 254 [2022-11-20 09:28:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:55,321 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2022-11-20 09:28:55,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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) [2022-11-20 09:28:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2022-11-20 09:28:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-20 09:28:55,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:55,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:55,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:28:55,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash -96098949, now seen corresponding path program 1 times [2022-11-20 09:28:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:55,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679427446] [2022-11-20 09:28:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:55,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:55,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679427446] [2022-11-20 09:28:55,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679427446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:55,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:55,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:55,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565983807] [2022-11-20 09:28:55,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:55,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:55,536 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2022-11-20 09:29:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:00,563 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2022-11-20 09:29:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 256 [2022-11-20 09:29:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:00,604 INFO L225 Difference]: With dead ends: 36166 [2022-11-20 09:29:00,604 INFO L226 Difference]: Without dead ends: 23196 [2022-11-20 09:29:00,614 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 [2022-11-20 09:29:00,615 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 842 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:00,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1988 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 09:29:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-11-20 09:29:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 23191. [2022-11-20 09:29:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23191 states, 23190 states have (on average 1.1870202673566193) internal successors, (27527), 23190 states have internal predecessors, (27527), 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) [2022-11-20 09:29:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 27527 transitions. [2022-11-20 09:29:00,934 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 27527 transitions. Word has length 256 [2022-11-20 09:29:00,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:00,934 INFO L495 AbstractCegarLoop]: Abstraction has 23191 states and 27527 transitions. [2022-11-20 09:29:00,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2022-11-20 09:29:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 27527 transitions. [2022-11-20 09:29:00,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-20 09:29:00,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:00,941 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:00,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:29:00,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1667206858, now seen corresponding path program 1 times [2022-11-20 09:29:00,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:00,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061378884] [2022-11-20 09:29:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 09:29:01,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:01,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061378884] [2022-11-20 09:29:01,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061378884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:01,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:01,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730828330] [2022-11-20 09:29:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:01,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:01,198 INFO L87 Difference]: Start difference. First operand 23191 states and 27527 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:06,395 INFO L93 Difference]: Finished difference Result 56620 states and 68544 transitions. [2022-11-20 09:29:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2022-11-20 09:29:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:06,447 INFO L225 Difference]: With dead ends: 56620 [2022-11-20 09:29:06,447 INFO L226 Difference]: Without dead ends: 34218 [2022-11-20 09:29:06,463 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 [2022-11-20 09:29:06,464 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 884 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:06,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 926 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 09:29:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34218 states. [2022-11-20 09:29:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34218 to 33422. [2022-11-20 09:29:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33422 states, 33421 states have (on average 1.1724664133329343) internal successors, (39185), 33421 states have internal predecessors, (39185), 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) [2022-11-20 09:29:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33422 states to 33422 states and 39185 transitions. [2022-11-20 09:29:06,887 INFO L78 Accepts]: Start accepts. Automaton has 33422 states and 39185 transitions. Word has length 278 [2022-11-20 09:29:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:06,890 INFO L495 AbstractCegarLoop]: Abstraction has 33422 states and 39185 transitions. [2022-11-20 09:29:06,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 33422 states and 39185 transitions. [2022-11-20 09:29:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-11-20 09:29:06,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:06,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:06,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:29:06,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:06,900 INFO L85 PathProgramCache]: Analyzing trace with hash 387334697, now seen corresponding path program 1 times [2022-11-20 09:29:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:06,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360945675] [2022-11-20 09:29:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 79 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:08,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:08,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360945675] [2022-11-20 09:29:08,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360945675] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:08,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398625955] [2022-11-20 09:29:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:08,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:08,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:08,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:29:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:29:08,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-20 09:29:08,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:08,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398625955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:08,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:08,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 09:29:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212056334] [2022-11-20 09:29:08,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:08,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:08,882 INFO L87 Difference]: Start difference. First operand 33422 states and 39185 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) [2022-11-20 09:29:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:13,473 INFO L93 Difference]: Finished difference Result 66053 states and 77575 transitions. [2022-11-20 09:29:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:13,475 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 283 [2022-11-20 09:29:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:13,523 INFO L225 Difference]: With dead ends: 66053 [2022-11-20 09:29:13,524 INFO L226 Difference]: Without dead ends: 33420 [2022-11-20 09:29:13,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:13,539 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 1165 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:13,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1441 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 09:29:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33420 states. [2022-11-20 09:29:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33420 to 33419. [2022-11-20 09:29:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33419 states, 33418 states have (on average 1.1338500209467952) internal successors, (37891), 33418 states have internal predecessors, (37891), 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) [2022-11-20 09:29:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33419 states to 33419 states and 37891 transitions. [2022-11-20 09:29:14,108 INFO L78 Accepts]: Start accepts. Automaton has 33419 states and 37891 transitions. Word has length 283 [2022-11-20 09:29:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:14,109 INFO L495 AbstractCegarLoop]: Abstraction has 33419 states and 37891 transitions. [2022-11-20 09:29:14,109 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) [2022-11-20 09:29:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 33419 states and 37891 transitions. [2022-11-20 09:29:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-11-20 09:29:14,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:14,121 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:14,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:14,341 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:14,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:14,341 INFO L85 PathProgramCache]: Analyzing trace with hash -77460058, now seen corresponding path program 1 times [2022-11-20 09:29:14,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:14,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713176883] [2022-11-20 09:29:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:14,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 09:29:14,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:14,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713176883] [2022-11-20 09:29:14,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713176883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:14,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:14,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778420158] [2022-11-20 09:29:14,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:14,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:14,642 INFO L87 Difference]: Start difference. First operand 33419 states and 37891 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2022-11-20 09:29:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:19,861 INFO L93 Difference]: Finished difference Result 77862 states and 89421 transitions. [2022-11-20 09:29:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:19,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 333 [2022-11-20 09:29:19,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:19,910 INFO L225 Difference]: With dead ends: 77862 [2022-11-20 09:29:19,910 INFO L226 Difference]: Without dead ends: 45232 [2022-11-20 09:29:19,924 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 [2022-11-20 09:29:19,925 INFO L413 NwaCegarLoop]: 1802 mSDtfsCounter, 821 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:19,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1945 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 09:29:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45232 states. [2022-11-20 09:29:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45232 to 44441. [2022-11-20 09:29:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44441 states, 44440 states have (on average 1.116021602160216) internal successors, (49596), 44440 states have internal predecessors, (49596), 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) [2022-11-20 09:29:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44441 states to 44441 states and 49596 transitions. [2022-11-20 09:29:20,491 INFO L78 Accepts]: Start accepts. Automaton has 44441 states and 49596 transitions. Word has length 333 [2022-11-20 09:29:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:20,492 INFO L495 AbstractCegarLoop]: Abstraction has 44441 states and 49596 transitions. [2022-11-20 09:29:20,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2022-11-20 09:29:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 44441 states and 49596 transitions. [2022-11-20 09:29:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-20 09:29:20,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:20,499 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:20,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:29:20,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:20,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1657907469, now seen corresponding path program 1 times [2022-11-20 09:29:20,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:20,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828980276] [2022-11-20 09:29:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:20,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 208 proven. 113 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 09:29:22,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:22,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828980276] [2022-11-20 09:29:22,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828980276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:22,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82685125] [2022-11-20 09:29:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:22,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:22,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:22,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:22,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:29:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:22,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:29:22,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-20 09:29:22,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:22,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82685125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:22,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:22,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 09:29:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622332343] [2022-11-20 09:29:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:22,576 INFO L87 Difference]: Start difference. First operand 44441 states and 49596 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:26,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:26,983 INFO L93 Difference]: Finished difference Result 88084 states and 98390 transitions. [2022-11-20 09:29:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:26,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2022-11-20 09:29:26,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:27,029 INFO L225 Difference]: With dead ends: 88084 [2022-11-20 09:29:27,029 INFO L226 Difference]: Without dead ends: 44432 [2022-11-20 09:29:27,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:27,054 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1072 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:27,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 815 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 09:29:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44432 states. [2022-11-20 09:29:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44432 to 44431. [2022-11-20 09:29:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44431 states, 44430 states have (on average 1.0851901868107134) internal successors, (48215), 44430 states have internal predecessors, (48215), 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) [2022-11-20 09:29:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44431 states to 44431 states and 48215 transitions. [2022-11-20 09:29:27,691 INFO L78 Accepts]: Start accepts. Automaton has 44431 states and 48215 transitions. Word has length 348 [2022-11-20 09:29:27,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:27,692 INFO L495 AbstractCegarLoop]: Abstraction has 44431 states and 48215 transitions. [2022-11-20 09:29:27,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:27,692 INFO L276 IsEmpty]: Start isEmpty. Operand 44431 states and 48215 transitions. [2022-11-20 09:29:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-20 09:29:27,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:27,699 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:27,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:27,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1478414346, now seen corresponding path program 1 times [2022-11-20 09:29:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:27,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438644566] [2022-11-20 09:29:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-20 09:29:28,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:28,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438644566] [2022-11-20 09:29:28,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438644566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:28,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:28,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:28,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355156044] [2022-11-20 09:29:28,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:28,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:28,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:28,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:28,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:28,522 INFO L87 Difference]: Start difference. First operand 44431 states and 48215 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2022-11-20 09:29:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:33,903 INFO L93 Difference]: Finished difference Result 89662 states and 98208 transitions. [2022-11-20 09:29:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:33,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-20 09:29:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:33,972 INFO L225 Difference]: With dead ends: 89662 [2022-11-20 09:29:33,973 INFO L226 Difference]: Without dead ends: 53111 [2022-11-20 09:29:33,993 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 [2022-11-20 09:29:33,994 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 951 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:33,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 665 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 09:29:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53111 states. [2022-11-20 09:29:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53111 to 44431. [2022-11-20 09:29:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44431 states, 44430 states have (on average 1.0851901868107134) internal successors, (48215), 44430 states have internal predecessors, (48215), 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) [2022-11-20 09:29:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44431 states to 44431 states and 48215 transitions. [2022-11-20 09:29:34,448 INFO L78 Accepts]: Start accepts. Automaton has 44431 states and 48215 transitions. Word has length 371 [2022-11-20 09:29:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:34,449 INFO L495 AbstractCegarLoop]: Abstraction has 44431 states and 48215 transitions. [2022-11-20 09:29:34,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2022-11-20 09:29:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 44431 states and 48215 transitions. [2022-11-20 09:29:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-20 09:29:34,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:34,458 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:34,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:29:34,458 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1603333441, now seen corresponding path program 1 times [2022-11-20 09:29:34,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:34,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458335861] [2022-11-20 09:29:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:34,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 09:29:34,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:34,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458335861] [2022-11-20 09:29:34,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458335861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:34,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:34,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:34,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161682948] [2022-11-20 09:29:34,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:34,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:34,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:34,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:34,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:34,791 INFO L87 Difference]: Start difference. First operand 44431 states and 48215 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:39,873 INFO L93 Difference]: Finished difference Result 99886 states and 109265 transitions. [2022-11-20 09:29:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:39,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 398 [2022-11-20 09:29:39,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:39,949 INFO L225 Difference]: With dead ends: 99886 [2022-11-20 09:29:39,949 INFO L226 Difference]: Without dead ends: 56244 [2022-11-20 09:29:39,973 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 [2022-11-20 09:29:39,974 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 927 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:39,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 754 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [993 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 09:29:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56244 states. [2022-11-20 09:29:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56244 to 54657. [2022-11-20 09:29:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54657 states, 54656 states have (on average 1.0905298594847774) internal successors, (59604), 54656 states have internal predecessors, (59604), 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) [2022-11-20 09:29:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54657 states to 54657 states and 59604 transitions. [2022-11-20 09:29:40,568 INFO L78 Accepts]: Start accepts. Automaton has 54657 states and 59604 transitions. Word has length 398 [2022-11-20 09:29:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:40,568 INFO L495 AbstractCegarLoop]: Abstraction has 54657 states and 59604 transitions. [2022-11-20 09:29:40,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 54657 states and 59604 transitions. [2022-11-20 09:29:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-20 09:29:40,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:40,580 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:40,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:29:40,581 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash -539611326, now seen corresponding path program 1 times [2022-11-20 09:29:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:40,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446470957] [2022-11-20 09:29:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:40,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-20 09:29:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:41,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446470957] [2022-11-20 09:29:41,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446470957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:41,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:41,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308082718] [2022-11-20 09:29:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:41,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:41,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:41,180 INFO L87 Difference]: Start difference. First operand 54657 states and 59604 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2022-11-20 09:29:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:45,867 INFO L93 Difference]: Finished difference Result 110102 states and 120006 transitions. [2022-11-20 09:29:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:45,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 431 [2022-11-20 09:29:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:45,923 INFO L225 Difference]: With dead ends: 110102 [2022-11-20 09:29:45,923 INFO L226 Difference]: Without dead ends: 56234 [2022-11-20 09:29:45,944 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 [2022-11-20 09:29:45,944 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 996 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:45,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1509 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 09:29:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56234 states. [2022-11-20 09:29:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56234 to 54649. [2022-11-20 09:29:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54649 states, 54648 states have (on average 1.0689686722295417) internal successors, (58417), 54648 states have internal predecessors, (58417), 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) [2022-11-20 09:29:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54649 states to 54649 states and 58417 transitions. [2022-11-20 09:29:46,812 INFO L78 Accepts]: Start accepts. Automaton has 54649 states and 58417 transitions. Word has length 431 [2022-11-20 09:29:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:46,813 INFO L495 AbstractCegarLoop]: Abstraction has 54649 states and 58417 transitions. [2022-11-20 09:29:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2022-11-20 09:29:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 54649 states and 58417 transitions. [2022-11-20 09:29:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-20 09:29:46,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:46,823 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 09:29:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:29:46,823 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 288168480, now seen corresponding path program 1 times [2022-11-20 09:29:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:46,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470560412] [2022-11-20 09:29:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-20 09:29:47,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:47,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470560412] [2022-11-20 09:29:47,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470560412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:47,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:47,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:47,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966071369] [2022-11-20 09:29:47,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:47,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:47,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:47,403 INFO L87 Difference]: Start difference. First operand 54649 states and 58417 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-11-20 09:29:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:52,278 INFO L93 Difference]: Finished difference Result 109310 states and 116855 transitions. [2022-11-20 09:29:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 511 [2022-11-20 09:29:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:52,340 INFO L225 Difference]: With dead ends: 109310 [2022-11-20 09:29:52,341 INFO L226 Difference]: Without dead ends: 54663 [2022-11-20 09:29:52,362 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 [2022-11-20 09:29:52,362 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 715 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:52,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1874 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 09:29:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54663 states. [2022-11-20 09:29:52,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54663 to 53861. [2022-11-20 09:29:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53861 states, 53860 states have (on average 1.053453397697735) internal successors, (56739), 53860 states have internal predecessors, (56739), 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) [2022-11-20 09:29:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53861 states to 53861 states and 56739 transitions. [2022-11-20 09:29:53,204 INFO L78 Accepts]: Start accepts. Automaton has 53861 states and 56739 transitions. Word has length 511 [2022-11-20 09:29:53,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:53,205 INFO L495 AbstractCegarLoop]: Abstraction has 53861 states and 56739 transitions. [2022-11-20 09:29:53,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-11-20 09:29:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 53861 states and 56739 transitions. [2022-11-20 09:29:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-20 09:29:53,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:53,219 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 09:29:53,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:29:53,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:53,222 INFO L85 PathProgramCache]: Analyzing trace with hash -609224798, now seen corresponding path program 1 times [2022-11-20 09:29:53,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:53,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305327340] [2022-11-20 09:29:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:53,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-11-20 09:29:53,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:53,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305327340] [2022-11-20 09:29:53,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305327340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:53,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:53,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:53,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480927930] [2022-11-20 09:29:53,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:53,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:53,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:53,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:53,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:53,839 INFO L87 Difference]: Start difference. First operand 53861 states and 56739 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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) [2022-11-20 09:29:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:59,812 INFO L93 Difference]: Finished difference Result 155051 states and 163510 transitions. [2022-11-20 09:29:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:59,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 511 [2022-11-20 09:29:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:59,912 INFO L225 Difference]: With dead ends: 155051 [2022-11-20 09:29:59,913 INFO L226 Difference]: Without dead ends: 101979 [2022-11-20 09:29:59,931 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 [2022-11-20 09:29:59,932 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 832 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 3586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:59,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 763 Invalid, 3586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 09:29:59,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101979 states. [2022-11-20 09:30:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101979 to 99536. [2022-11-20 09:30:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99536 states, 99535 states have (on average 1.050233586175717) internal successors, (104535), 99535 states have internal predecessors, (104535), 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) [2022-11-20 09:30:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99536 states to 99536 states and 104535 transitions. [2022-11-20 09:30:01,340 INFO L78 Accepts]: Start accepts. Automaton has 99536 states and 104535 transitions. Word has length 511 [2022-11-20 09:30:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:01,341 INFO L495 AbstractCegarLoop]: Abstraction has 99536 states and 104535 transitions. [2022-11-20 09:30:01,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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) [2022-11-20 09:30:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 99536 states and 104535 transitions. [2022-11-20 09:30:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-11-20 09:30:01,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:01,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:01,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:30:01,362 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash -981061782, now seen corresponding path program 1 times [2022-11-20 09:30:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:01,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228015600] [2022-11-20 09:30:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:01,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 317 proven. 113 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 09:30:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228015600] [2022-11-20 09:30:03,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228015600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:03,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445872707] [2022-11-20 09:30:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:03,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:03,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:03,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:03,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:30:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:03,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:30:03,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 09:30:04,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:04,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445872707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:04,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:30:04,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 09:30:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579859735] [2022-11-20 09:30:04,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:04,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:30:04,526 INFO L87 Difference]: Start difference. First operand 99536 states and 104535 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 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) [2022-11-20 09:30:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:09,150 INFO L93 Difference]: Finished difference Result 189631 states and 199559 transitions. [2022-11-20 09:30:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:09,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 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 533 [2022-11-20 09:30:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:09,476 INFO L225 Difference]: With dead ends: 189631 [2022-11-20 09:30:09,477 INFO L226 Difference]: Without dead ends: 103478 [2022-11-20 09:30:09,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:30:09,501 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 682 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:09,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1145 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 09:30:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103478 states. [2022-11-20 09:30:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103478 to 101897. [2022-11-20 09:30:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101897 states, 101896 states have (on average 1.0455856952186544) internal successors, (106541), 101896 states have internal predecessors, (106541), 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) [2022-11-20 09:30:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101897 states to 101897 states and 106541 transitions. [2022-11-20 09:30:11,100 INFO L78 Accepts]: Start accepts. Automaton has 101897 states and 106541 transitions. Word has length 533 [2022-11-20 09:30:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:11,100 INFO L495 AbstractCegarLoop]: Abstraction has 101897 states and 106541 transitions. [2022-11-20 09:30:11,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 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) [2022-11-20 09:30:11,100 INFO L276 IsEmpty]: Start isEmpty. Operand 101897 states and 106541 transitions. [2022-11-20 09:30:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2022-11-20 09:30:11,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:11,119 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 09:30:11,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:11,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7921fe20-cf2e-43b3-aa0b-f18f0ace5487/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:11,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:11,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash -465549890, now seen corresponding path program 1 times [2022-11-20 09:30:11,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:11,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620834611] [2022-11-20 09:30:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:11,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-20 09:30:11,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620834611] [2022-11-20 09:30:11,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620834611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:11,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:11,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:11,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060645695] [2022-11-20 09:30:11,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:11,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:30:11,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:11,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:30:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:30:11,975 INFO L87 Difference]: Start difference. First operand 101897 states and 106541 transitions. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 3 states have internal predecessors, (451), 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) [2022-11-20 09:30:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:22,028 INFO L93 Difference]: Finished difference Result 300026 states and 314269 transitions. [2022-11-20 09:30:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:30:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 3 states have internal predecessors, (451), 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 612 [2022-11-20 09:30:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:22,303 INFO L225 Difference]: With dead ends: 300026 [2022-11-20 09:30:22,303 INFO L226 Difference]: Without dead ends: 198918 [2022-11-20 09:30:22,621 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 [2022-11-20 09:30:22,621 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 1697 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 6218 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 7211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 6218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:22,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1697 Valid, 748 Invalid, 7211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [993 Valid, 6218 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-20 09:30:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198918 states. [2022-11-20 09:30:24,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198918 to 195629. [2022-11-20 09:30:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195629 states, 195628 states have (on average 1.044656184186313) internal successors, (204364), 195628 states have internal predecessors, (204364), 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) [2022-11-20 09:30:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195629 states to 195629 states and 204364 transitions. [2022-11-20 09:30:25,353 INFO L78 Accepts]: Start accepts. Automaton has 195629 states and 204364 transitions. Word has length 612 [2022-11-20 09:30:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:25,354 INFO L495 AbstractCegarLoop]: Abstraction has 195629 states and 204364 transitions. [2022-11-20 09:30:25,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 3 states have internal predecessors, (451), 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) [2022-11-20 09:30:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 195629 states and 204364 transitions. [2022-11-20 09:30:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2022-11-20 09:30:25,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:25,373 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:25,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:30:25,374 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:25,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:25,375 INFO L85 PathProgramCache]: Analyzing trace with hash -239929368, now seen corresponding path program 1 times [2022-11-20 09:30:25,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:25,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091319287] [2022-11-20 09:30:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 859 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-20 09:30:26,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:26,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091319287] [2022-11-20 09:30:26,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091319287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:26,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:26,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:26,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030292235] [2022-11-20 09:30:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:26,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:26,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:26,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:26,242 INFO L87 Difference]: Start difference. First operand 195629 states and 204364 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2022-11-20 09:30:31,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:31,483 INFO L93 Difference]: Finished difference Result 375534 states and 392798 transitions. [2022-11-20 09:30:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:31,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 666 [2022-11-20 09:30:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:31,737 INFO L225 Difference]: With dead ends: 375534 [2022-11-20 09:30:31,737 INFO L226 Difference]: Without dead ends: 195647 [2022-11-20 09:30:32,213 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 [2022-11-20 09:30:32,214 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 778 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:32,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1768 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 09:30:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195647 states. [2022-11-20 09:30:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195647 to 193266. [2022-11-20 09:30:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193266 states, 193265 states have (on average 1.041818228856751) internal successors, (201347), 193265 states have internal predecessors, (201347), 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) [2022-11-20 09:30:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193266 states to 193266 states and 201347 transitions. [2022-11-20 09:30:34,606 INFO L78 Accepts]: Start accepts. Automaton has 193266 states and 201347 transitions. Word has length 666 [2022-11-20 09:30:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:34,606 INFO L495 AbstractCegarLoop]: Abstraction has 193266 states and 201347 transitions. [2022-11-20 09:30:34,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2022-11-20 09:30:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 193266 states and 201347 transitions. [2022-11-20 09:30:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-11-20 09:30:34,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:34,628 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:34,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 09:30:34,629 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1772522054, now seen corresponding path program 1 times [2022-11-20 09:30:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:34,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586543408] [2022-11-20 09:30:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 980 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-11-20 09:30:35,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:35,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586543408] [2022-11-20 09:30:35,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586543408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:35,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:35,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143489678] [2022-11-20 09:30:35,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:35,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:35,934 INFO L87 Difference]: Start difference. First operand 193266 states and 201347 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2022-11-20 09:30:43,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:43,095 INFO L93 Difference]: Finished difference Result 436937 states and 456434 transitions. [2022-11-20 09:30:43,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:43,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 696 [2022-11-20 09:30:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:43,471 INFO L225 Difference]: With dead ends: 436937 [2022-11-20 09:30:43,471 INFO L226 Difference]: Without dead ends: 260991 [2022-11-20 09:30:43,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:43,559 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 1020 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:43,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 597 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 09:30:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260991 states. [2022-11-20 09:30:47,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260991 to 260984. [2022-11-20 09:30:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260984 states, 260983 states have (on average 1.0393857071150228) internal successors, (271262), 260983 states have internal predecessors, (271262), 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) [2022-11-20 09:30:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260984 states to 260984 states and 271262 transitions. [2022-11-20 09:30:47,651 INFO L78 Accepts]: Start accepts. Automaton has 260984 states and 271262 transitions. Word has length 696 [2022-11-20 09:30:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:47,652 INFO L495 AbstractCegarLoop]: Abstraction has 260984 states and 271262 transitions. [2022-11-20 09:30:47,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2022-11-20 09:30:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 260984 states and 271262 transitions. [2022-11-20 09:30:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2022-11-20 09:30:47,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:47,682 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:47,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 09:30:47,683 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash 281320271, now seen corresponding path program 1 times [2022-11-20 09:30:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:47,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958574437] [2022-11-20 09:30:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat