./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash 57114188bd56a0070acfa3b1f6841bb6a55b2a9596408ce4fb03f42ffef00ea1 --- 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-5e519f3 [2022-11-02 20:47:32,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:47:32,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:47:32,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:47:32,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:47:32,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:47:32,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:47:32,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:47:32,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:47:32,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:47:32,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:47:32,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:47:32,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:47:32,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:47:32,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:47:32,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:47:32,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:47:32,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:47:32,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:47:32,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:47:32,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:47:32,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:47:32,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:47:32,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:47:32,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:47:32,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:47:32,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:47:32,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:47:32,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:47:32,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:47:32,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:47:32,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:47:32,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:47:32,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:47:32,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:47:32,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:47:32,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:47:32,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:47:32,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:47:32,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:47:32,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:47:32,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:47:32,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:47:32,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:47:32,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:47:32,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:47:32,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:47:32,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:47:32,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:47:32,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:47:32,790 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:47:32,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:47:32,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:47:32,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:47:32,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:47:32,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:47:32,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:47:32,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:47:32,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:47:32,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:47:32,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:47:32,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:47:32,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:47:32,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:32,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:47:32,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:47:32,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:47:32,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:47:32,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:47:32,795 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:47:32,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:47:32,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:47:32,796 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_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57114188bd56a0070acfa3b1f6841bb6a55b2a9596408ce4fb03f42ffef00ea1 [2022-11-02 20:47:33,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:47:33,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:47:33,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:47:33,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:47:33,144 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:47:33,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c [2022-11-02 20:47:33,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data/1a8d3b962/dafd0745f94649f98fdcfeeedfa704b5/FLAG91714199b [2022-11-02 20:47:33,798 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:47:33,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c [2022-11-02 20:47:33,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data/1a8d3b962/dafd0745f94649f98fdcfeeedfa704b5/FLAG91714199b [2022-11-02 20:47:34,138 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data/1a8d3b962/dafd0745f94649f98fdcfeeedfa704b5 [2022-11-02 20:47:34,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:47:34,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:47:34,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:34,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:47:34,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:47:34,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f362c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34, skipping insertion in model container [2022-11-02 20:47:34,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:47:34,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:47:34,393 WARN L230 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_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c[1107,1120] [2022-11-02 20:47:34,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:34,569 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:47:34,581 WARN L230 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_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c[1107,1120] [2022-11-02 20:47:34,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:34,789 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:47:34,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34 WrapperNode [2022-11-02 20:47:34,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:34,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:34,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:47:34,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:47:34,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,963 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 835 [2022-11-02 20:47:34,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:34,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:47:34,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:47:34,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:47:34,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:35,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:35,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:35,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:35,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:35,048 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:35,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:35,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:47:35,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:47:35,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:47:35,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:47:35,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:35,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:35,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:35,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:35,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:47:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:47:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:47:35,399 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:47:35,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:47:36,581 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:47:36,589 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:47:36,589 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:47:36,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:36 BoogieIcfgContainer [2022-11-02 20:47:36,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:47:36,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:47:36,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:47:36,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:47:36,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:47:34" (1/3) ... [2022-11-02 20:47:36,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fe21a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:36, skipping insertion in model container [2022-11-02 20:47:36,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (2/3) ... [2022-11-02 20:47:36,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fe21a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:36, skipping insertion in model container [2022-11-02 20:47:36,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:36" (3/3) ... [2022-11-02 20:47:36,603 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul11.c [2022-11-02 20:47:36,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:47:36,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:47:36,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:47:36,684 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;@4088f783, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:47:36,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:47:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 84 states have internal predecessors, (124), 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) [2022-11-02 20:47:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:36,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:36,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:36,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1892373183, now seen corresponding path program 1 times [2022-11-02 20:47:36,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:36,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175140423] [2022-11-02 20:47:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:37,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:37,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175140423] [2022-11-02 20:47:37,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175140423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:37,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:37,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414014365] [2022-11-02 20:47:37,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:37,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:37,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:37,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:37,529 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 84 states have internal predecessors, (124), 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 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:37,607 INFO L93 Difference]: Finished difference Result 244 states and 365 transitions. [2022-11-02 20:47:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:37,619 INFO L225 Difference]: With dead ends: 244 [2022-11-02 20:47:37,619 INFO L226 Difference]: Without dead ends: 161 [2022-11-02 20:47:37,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:37,626 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 228 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:37,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 346 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-02 20:47:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 83. [2022-11-02 20:47:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 states have internal predecessors, (120), 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) [2022-11-02 20:47:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2022-11-02 20:47:37,674 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 17 [2022-11-02 20:47:37,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:37,675 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2022-11-02 20:47:37,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2022-11-02 20:47:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:37,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:37,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:37,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:47:37,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:37,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1391476863, now seen corresponding path program 1 times [2022-11-02 20:47:37,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:37,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974911894] [2022-11-02 20:47:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:38,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:38,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974911894] [2022-11-02 20:47:38,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974911894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:38,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:38,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200826062] [2022-11-02 20:47:38,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:38,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:38,056 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:38,099 INFO L93 Difference]: Finished difference Result 242 states and 353 transitions. [2022-11-02 20:47:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:38,102 INFO L225 Difference]: With dead ends: 242 [2022-11-02 20:47:38,102 INFO L226 Difference]: Without dead ends: 163 [2022-11-02 20:47:38,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:38,104 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 225 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:38,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 348 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-02 20:47:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 85. [2022-11-02 20:47:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 84 states have internal predecessors, (122), 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) [2022-11-02 20:47:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2022-11-02 20:47:38,113 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 17 [2022-11-02 20:47:38,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:38,114 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2022-11-02 20:47:38,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2022-11-02 20:47:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:38,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:38,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:38,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:47:38,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1649642301, now seen corresponding path program 1 times [2022-11-02 20:47:38,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:38,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108258277] [2022-11-02 20:47:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:38,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:38,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:38,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108258277] [2022-11-02 20:47:38,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108258277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:38,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:38,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:38,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339253752] [2022-11-02 20:47:38,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:38,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:38,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:38,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:38,399 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:38,464 INFO L93 Difference]: Finished difference Result 244 states and 355 transitions. [2022-11-02 20:47:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:38,469 INFO L225 Difference]: With dead ends: 244 [2022-11-02 20:47:38,469 INFO L226 Difference]: Without dead ends: 165 [2022-11-02 20:47:38,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:38,474 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 222 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:38,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 350 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-02 20:47:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 87. [2022-11-02 20:47:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.441860465116279) internal successors, (124), 86 states have internal predecessors, (124), 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) [2022-11-02 20:47:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2022-11-02 20:47:38,485 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 17 [2022-11-02 20:47:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:38,485 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2022-11-02 20:47:38,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2022-11-02 20:47:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:38,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:38,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:38,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:47:38,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:38,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1256615291, now seen corresponding path program 1 times [2022-11-02 20:47:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:38,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054318361] [2022-11-02 20:47:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:38,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:38,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054318361] [2022-11-02 20:47:38,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054318361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:38,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:38,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843927605] [2022-11-02 20:47:38,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:38,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:38,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:38,791 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:38,856 INFO L93 Difference]: Finished difference Result 246 states and 357 transitions. [2022-11-02 20:47:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:38,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:38,859 INFO L225 Difference]: With dead ends: 246 [2022-11-02 20:47:38,859 INFO L226 Difference]: Without dead ends: 167 [2022-11-02 20:47:38,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:38,864 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 219 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:38,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 352 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:47:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-02 20:47:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 89. [2022-11-02 20:47:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 states have internal predecessors, (126), 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) [2022-11-02 20:47:38,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2022-11-02 20:47:38,886 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 17 [2022-11-02 20:47:38,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:38,886 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2022-11-02 20:47:38,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2022-11-02 20:47:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:38,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:38,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:38,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:47:38,891 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash 447268665, now seen corresponding path program 1 times [2022-11-02 20:47:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:38,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434473681] [2022-11-02 20:47:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:39,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:39,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434473681] [2022-11-02 20:47:39,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434473681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:39,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:39,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:39,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941548608] [2022-11-02 20:47:39,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:39,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:39,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:39,196 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:39,239 INFO L93 Difference]: Finished difference Result 248 states and 359 transitions. [2022-11-02 20:47:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:39,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:39,242 INFO L225 Difference]: With dead ends: 248 [2022-11-02 20:47:39,243 INFO L226 Difference]: Without dead ends: 169 [2022-11-02 20:47:39,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:39,245 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 216 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:39,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 354 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:39,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-02 20:47:39,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 91. [2022-11-02 20:47:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 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) [2022-11-02 20:47:39,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 128 transitions. [2022-11-02 20:47:39,261 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 128 transitions. Word has length 17 [2022-11-02 20:47:39,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:39,261 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 128 transitions. [2022-11-02 20:47:39,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:39,261 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 128 transitions. [2022-11-02 20:47:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:39,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:39,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:39,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:47:39,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash 504526967, now seen corresponding path program 1 times [2022-11-02 20:47:39,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:39,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128532314] [2022-11-02 20:47:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:39,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:39,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:39,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128532314] [2022-11-02 20:47:39,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128532314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:39,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:39,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145874826] [2022-11-02 20:47:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:39,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:39,543 INFO L87 Difference]: Start difference. First operand 91 states and 128 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:39,586 INFO L93 Difference]: Finished difference Result 250 states and 361 transitions. [2022-11-02 20:47:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:39,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:39,588 INFO L225 Difference]: With dead ends: 250 [2022-11-02 20:47:39,588 INFO L226 Difference]: Without dead ends: 171 [2022-11-02 20:47:39,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:39,590 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 213 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:39,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 356 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-02 20:47:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 93. [2022-11-02 20:47:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 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) [2022-11-02 20:47:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2022-11-02 20:47:39,611 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 17 [2022-11-02 20:47:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:39,612 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2022-11-02 20:47:39,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2022-11-02 20:47:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:39,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:39,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:39,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:47:39,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:39,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash 504586549, now seen corresponding path program 1 times [2022-11-02 20:47:39,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:39,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094100936] [2022-11-02 20:47:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:39,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:39,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:40,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:40,007 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:47:40,008 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:47:40,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:47:40,014 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:40,017 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:47:40,076 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:47:40,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:47:40 BoogieIcfgContainer [2022-11-02 20:47:40,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:47:40,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:47:40,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:47:40,097 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:47:40,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:36" (3/4) ... [2022-11-02 20:47:40,100 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:47:40,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:47:40,101 INFO L158 Benchmark]: Toolchain (without parser) took 5955.74ms. Allocated memory was 90.2MB in the beginning and 207.6MB in the end (delta: 117.4MB). Free memory was 57.1MB in the beginning and 121.0MB in the end (delta: -63.9MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2022-11-02 20:47:40,101 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:47:40,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 642.64ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 56.9MB in the beginning and 80.5MB in the end (delta: -23.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:47:40,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 173.10ms. Allocated memory is still 119.5MB. Free memory was 80.5MB in the beginning and 67.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:47:40,102 INFO L158 Benchmark]: Boogie Preprocessor took 102.69ms. Allocated memory is still 119.5MB. Free memory was 67.9MB in the beginning and 87.0MB in the end (delta: -19.1MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-11-02 20:47:40,103 INFO L158 Benchmark]: RCFGBuilder took 1523.39ms. Allocated memory is still 119.5MB. Free memory was 87.0MB in the beginning and 44.7MB in the end (delta: 42.3MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2022-11-02 20:47:40,103 INFO L158 Benchmark]: TraceAbstraction took 3501.76ms. Allocated memory was 119.5MB in the beginning and 207.6MB in the end (delta: 88.1MB). Free memory was 43.9MB in the beginning and 122.0MB in the end (delta: -78.2MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-11-02 20:47:40,104 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 207.6MB. Free memory was 122.0MB in the beginning and 121.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:47:40,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 642.64ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 56.9MB in the beginning and 80.5MB in the end (delta: -23.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 173.10ms. Allocated memory is still 119.5MB. Free memory was 80.5MB in the beginning and 67.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.69ms. Allocated memory is still 119.5MB. Free memory was 67.9MB in the beginning and 87.0MB in the end (delta: -19.1MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * RCFGBuilder took 1523.39ms. Allocated memory is still 119.5MB. Free memory was 87.0MB in the beginning and 44.7MB in the end (delta: 42.3MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3501.76ms. Allocated memory was 119.5MB in the beginning and 207.6MB in the end (delta: 88.1MB). Free memory was 43.9MB in the beginning and 122.0MB in the end (delta: -78.2MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 207.6MB. Free memory was 122.0MB in the beginning and 121.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 208, overapproximation of bitwiseAnd at line 200. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 32); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (32 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 64); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (64 - 1); [L34] const SORT_215 mask_SORT_215 = (SORT_215)-1 >> (sizeof(SORT_215) * 8 - 4); [L35] const SORT_215 msb_SORT_215 = (SORT_215)1 << (4 - 1); [L37] const SORT_217 mask_SORT_217 = (SORT_217)-1 >> (sizeof(SORT_217) * 8 - 60); [L38] const SORT_217 msb_SORT_217 = (SORT_217)1 << (60 - 1); [L40] const SORT_10 var_11 = 0; [L41] const SORT_1 var_14 = 0; [L42] const SORT_3 var_24 = 0; [L43] const SORT_1 var_51 = 1; [L44] const SORT_3 var_204 = 1; [L45] const SORT_3 var_208 = 3735928559; [L46] const SORT_3 var_211 = 12245771; [L47] const SORT_215 var_216 = 0; [L49] SORT_1 input_2; [L50] SORT_3 input_4; [L51] SORT_3 input_5; [L52] SORT_1 input_6; [L53] SORT_1 input_7; [L54] SORT_1 input_8; [L55] SORT_1 input_9; [L57] SORT_10 state_12 = __VERIFIER_nondet_ulong() & mask_SORT_10; [L58] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L59] SORT_10 state_18 = __VERIFIER_nondet_ulong() & mask_SORT_10; [L60] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L61] SORT_3 state_25 = __VERIFIER_nondet_uint() & mask_SORT_3; [L62] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L63] SORT_3 state_30 = __VERIFIER_nondet_uint() & mask_SORT_3; [L64] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L65] SORT_3 state_37 = __VERIFIER_nondet_uint() & mask_SORT_3; [L66] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L67] SORT_3 state_42 = __VERIFIER_nondet_uint() & mask_SORT_3; [L68] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L69] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L70] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_81 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_83 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_85 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_220 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_251 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_264 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_269 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_10 init_13_arg_1 = var_11; [L88] state_12 = init_13_arg_1 [L89] SORT_1 init_16_arg_1 = var_14; [L90] state_15 = init_16_arg_1 [L91] SORT_10 init_19_arg_1 = var_11; [L92] state_18 = init_19_arg_1 [L93] SORT_1 init_21_arg_1 = var_14; [L94] state_20 = init_21_arg_1 [L95] SORT_3 init_26_arg_1 = var_24; [L96] state_25 = init_26_arg_1 [L97] SORT_1 init_28_arg_1 = var_14; [L98] state_27 = init_28_arg_1 [L99] SORT_3 init_31_arg_1 = var_24; [L100] state_30 = init_31_arg_1 [L101] SORT_1 init_33_arg_1 = var_14; [L102] state_32 = init_33_arg_1 [L103] SORT_3 init_38_arg_1 = var_24; [L104] state_37 = init_38_arg_1 [L105] SORT_1 init_40_arg_1 = var_14; [L106] state_39 = init_40_arg_1 [L107] SORT_3 init_43_arg_1 = var_24; [L108] state_42 = init_43_arg_1 [L109] SORT_1 init_45_arg_1 = var_14; [L110] state_44 = init_45_arg_1 [L111] SORT_1 init_62_arg_1 = var_14; [L112] state_61 = init_62_arg_1 [L113] SORT_1 init_64_arg_1 = var_14; [L114] state_63 = init_64_arg_1 [L115] SORT_1 init_66_arg_1 = var_14; [L116] state_65 = init_66_arg_1 [L117] SORT_1 init_68_arg_1 = var_14; [L118] state_67 = init_68_arg_1 [L119] SORT_1 init_70_arg_1 = var_14; [L120] state_69 = init_70_arg_1 [L121] SORT_1 init_72_arg_1 = var_14; [L122] state_71 = init_72_arg_1 [L123] SORT_1 init_74_arg_1 = var_14; [L124] state_73 = init_74_arg_1 [L125] SORT_1 init_76_arg_1 = var_14; [L126] state_75 = init_76_arg_1 [L127] SORT_1 init_78_arg_1 = var_14; [L128] state_77 = init_78_arg_1 [L129] SORT_1 init_80_arg_1 = var_14; [L130] state_79 = init_80_arg_1 [L131] SORT_1 init_82_arg_1 = var_14; [L132] state_81 = init_82_arg_1 [L133] SORT_1 init_84_arg_1 = var_14; [L134] state_83 = init_84_arg_1 [L135] SORT_1 init_86_arg_1 = var_14; [L136] state_85 = init_86_arg_1 [L137] SORT_1 init_221_arg_1 = var_14; [L138] state_220 = init_221_arg_1 [L139] SORT_1 init_252_arg_1 = var_14; [L140] state_251 = init_252_arg_1 [L141] SORT_1 init_265_arg_1 = var_14; [L142] state_264 = init_265_arg_1 [L143] SORT_1 init_270_arg_1 = var_14; [L144] state_269 = init_270_arg_1 VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_24=0, var_51=1] [L147] input_2 = __VERIFIER_nondet_uchar() [L148] input_4 = __VERIFIER_nondet_uint() [L149] input_4 = input_4 & mask_SORT_3 [L150] input_5 = __VERIFIER_nondet_uint() [L151] input_5 = input_5 & mask_SORT_3 [L152] input_6 = __VERIFIER_nondet_uchar() [L153] input_6 = input_6 & mask_SORT_1 [L154] input_7 = __VERIFIER_nondet_uchar() [L155] input_7 = input_7 & mask_SORT_1 [L156] input_8 = __VERIFIER_nondet_uchar() [L157] input_8 = input_8 & mask_SORT_1 [L158] input_9 = __VERIFIER_nondet_uchar() [L159] input_9 = input_9 & mask_SORT_1 [L162] SORT_1 var_17_arg_0 = state_15; [L163] SORT_10 var_17_arg_1 = state_12; [L164] SORT_10 var_17_arg_2 = var_11; VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_24=0, var_51=1] [L165] EXPR var_17_arg_0 ? var_17_arg_1 : var_17_arg_2 VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17_arg_0=0, var_17_arg_0 ? var_17_arg_1 : var_17_arg_2=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_24=0, var_51=1] [L165] SORT_10 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L166] var_17 = var_17 & mask_SORT_10 [L167] SORT_1 var_22_arg_0 = state_20; [L168] SORT_10 var_22_arg_1 = state_18; [L169] SORT_10 var_22_arg_2 = var_11; VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_24=0, var_51=1] [L170] EXPR var_22_arg_0 ? var_22_arg_1 : var_22_arg_2 VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22_arg_0=0, var_22_arg_0 ? var_22_arg_1 : var_22_arg_2=0, var_22_arg_1=0, var_22_arg_2=0, var_24=0, var_51=1] [L170] SORT_10 var_22 = var_22_arg_0 ? var_22_arg_1 : var_22_arg_2; [L171] var_22 = var_22 & mask_SORT_10 [L172] SORT_10 var_23_arg_0 = var_17; [L173] SORT_10 var_23_arg_1 = var_22; [L174] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L175] SORT_1 var_29_arg_0 = state_27; [L176] SORT_3 var_29_arg_1 = state_25; [L177] SORT_3 var_29_arg_2 = var_24; VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_23=1, var_23_arg_0=0, var_23_arg_1=0, var_24=0, var_29_arg_0=0, var_29_arg_1=0, var_29_arg_2=0, var_51=1] [L178] EXPR var_29_arg_0 ? var_29_arg_1 : var_29_arg_2 VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_23=1, var_23_arg_0=0, var_23_arg_1=0, var_24=0, var_29_arg_0=0, var_29_arg_0 ? var_29_arg_1 : var_29_arg_2=0, var_29_arg_1=0, var_29_arg_2=0, var_51=1] [L178] SORT_3 var_29 = var_29_arg_0 ? var_29_arg_1 : var_29_arg_2; [L179] var_29 = var_29 & mask_SORT_3 [L180] SORT_1 var_34_arg_0 = state_32; [L181] SORT_3 var_34_arg_1 = state_30; [L182] SORT_3 var_34_arg_2 = var_24; VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_23=1, var_23_arg_0=0, var_23_arg_1=0, var_24=0, var_29=0, var_29_arg_0=0, var_29_arg_1=0, var_29_arg_2=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=0, var_51=1] [L183] EXPR var_34_arg_0 ? var_34_arg_1 : var_34_arg_2 VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_23=1, var_23_arg_0=0, var_23_arg_1=0, var_24=0, var_29=0, var_29_arg_0=0, var_29_arg_1=0, var_29_arg_2=0, var_34_arg_0=0, var_34_arg_0 ? var_34_arg_1 : var_34_arg_2=0, var_34_arg_1=0, var_34_arg_2=0, var_51=1] [L183] SORT_3 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; [L184] var_34 = var_34 & mask_SORT_3 [L185] SORT_3 var_35_arg_0 = var_29; [L186] SORT_3 var_35_arg_1 = var_34; [L187] SORT_1 var_35 = var_35_arg_0 == var_35_arg_1; [L188] SORT_1 var_36_arg_0 = var_23; [L189] SORT_1 var_36_arg_1 = var_35; [L190] SORT_1 var_36 = var_36_arg_0 & var_36_arg_1; [L191] SORT_1 var_41_arg_0 = state_39; [L192] SORT_3 var_41_arg_1 = state_37; [L193] SORT_3 var_41_arg_2 = var_24; VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_23=1, var_23_arg_0=0, var_23_arg_1=0, var_24=0, var_29=0, var_29_arg_0=0, var_29_arg_1=0, var_29_arg_2=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=0, var_35=1, var_35_arg_0=0, var_35_arg_1=0, var_36=1, var_36_arg_0=1, var_36_arg_1=1, var_41_arg_0=0, var_41_arg_1=0, var_41_arg_2=0, var_51=1] [L194] EXPR var_41_arg_0 ? var_41_arg_1 : var_41_arg_2 VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_23=1, var_23_arg_0=0, var_23_arg_1=0, var_24=0, var_29=0, var_29_arg_0=0, var_29_arg_1=0, var_29_arg_2=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=0, var_35=1, var_35_arg_0=0, var_35_arg_1=0, var_36=1, var_36_arg_0=1, var_36_arg_1=1, var_41_arg_0=0, var_41_arg_0 ? var_41_arg_1 : var_41_arg_2=0, var_41_arg_1=0, var_41_arg_2=0, var_51=1] [L194] SORT_3 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L195] var_41 = var_41 & mask_SORT_3 [L196] SORT_1 var_46_arg_0 = state_44; [L197] SORT_3 var_46_arg_1 = state_42; [L198] SORT_3 var_46_arg_2 = var_24; VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_23=1, var_23_arg_0=0, var_23_arg_1=0, var_24=0, var_29=0, var_29_arg_0=0, var_29_arg_1=0, var_29_arg_2=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=0, var_35=1, var_35_arg_0=0, var_35_arg_1=0, var_36=1, var_36_arg_0=1, var_36_arg_1=1, var_41=0, var_41_arg_0=0, var_41_arg_1=0, var_41_arg_2=0, var_46_arg_0=0, var_46_arg_1=0, var_46_arg_2=0, var_51=1] [L199] EXPR var_46_arg_0 ? var_46_arg_1 : var_46_arg_2 VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_221_arg_1=0, init_252_arg_1=0, init_265_arg_1=0, init_26_arg_1=0, init_270_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, input_2=11, input_4=0, input_5=0, input_6=1, input_7=0, input_8=0, input_9=0, mask_SORT_1=1, mask_SORT_10=18446744073709551615, mask_SORT_215=15, mask_SORT_217=18446744073709551615, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_10=9223372036854775808, msb_SORT_215=8, msb_SORT_217=576460752303423488, msb_SORT_3=2147483648, state_12=0, state_15=0, state_18=0, state_20=0, state_220=0, state_25=0, state_251=0, state_264=0, state_269=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, var_11=0, var_14=0, var_17=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=0, var_204=1, var_208=3735928559, var_211=12245771, var_216=0, var_22=0, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_23=1, var_23_arg_0=0, var_23_arg_1=0, var_24=0, var_29=0, var_29_arg_0=0, var_29_arg_1=0, var_29_arg_2=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=0, var_35=1, var_35_arg_0=0, var_35_arg_1=0, var_36=1, var_36_arg_0=1, var_36_arg_1=1, var_41=0, var_41_arg_0=0, var_41_arg_1=0, var_41_arg_2=0, var_46_arg_0=0, var_46_arg_0 ? var_46_arg_1 : var_46_arg_2=0, var_46_arg_1=0, var_46_arg_2=0, var_51=1] [L199] SORT_3 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L200] var_46 = var_46 & mask_SORT_3 [L201] SORT_3 var_47_arg_0 = var_41; [L202] SORT_3 var_47_arg_1 = var_46; [L203] SORT_1 var_47 = var_47_arg_0 == var_47_arg_1; [L204] SORT_1 var_48_arg_0 = var_36; [L205] SORT_1 var_48_arg_1 = var_47; [L206] SORT_1 var_48 = var_48_arg_0 & var_48_arg_1; [L207] SORT_1 var_52_arg_0 = var_48; [L208] SORT_1 var_52 = ~var_52_arg_0; [L209] SORT_1 var_53_arg_0 = var_51; [L210] SORT_1 var_53_arg_1 = var_52; [L211] SORT_1 var_53 = var_53_arg_0 & var_53_arg_1; [L212] var_53 = var_53 & mask_SORT_1 [L213] SORT_1 bad_54_arg_0 = var_53; [L214] CALL __VERIFIER_assert(!(bad_54_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1323 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1323 mSDsluCounter, 2106 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1374 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 732 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=6, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 468 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:47:40,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash 57114188bd56a0070acfa3b1f6841bb6a55b2a9596408ce4fb03f42ffef00ea1 --- 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-5e519f3 [2022-11-02 20:47:42,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:47:42,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:47:42,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:47:42,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:47:42,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:47:42,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:47:42,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:47:42,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:47:42,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:47:42,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:47:42,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:47:42,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:47:42,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:47:42,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:47:42,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:47:42,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:47:42,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:47:42,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:47:42,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:47:42,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:47:42,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:47:42,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:47:42,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:47:42,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:47:42,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:47:42,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:47:42,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:47:42,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:47:42,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:47:42,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:47:42,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:47:42,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:47:42,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:47:42,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:47:42,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:47:42,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:47:42,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:47:42,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:47:42,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:47:42,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:47:42,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:47:42,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:47:42,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:47:42,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:47:42,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:47:42,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:47:42,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:47:42,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:47:42,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:47:42,586 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:47:42,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:47:42,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:47:42,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:47:42,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:47:42,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:47:42,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:47:42,588 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:47:42,588 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:47:42,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:47:42,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:47:42,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:47:42,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:47:42,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:47:42,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:47:42,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:42,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:47:42,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:47:42,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:47:42,590 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:47:42,590 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:47:42,590 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:47:42,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:47:42,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:47:42,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:47:42,591 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57114188bd56a0070acfa3b1f6841bb6a55b2a9596408ce4fb03f42ffef00ea1 [2022-11-02 20:47:42,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:47:42,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:47:42,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:47:42,986 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:47:42,987 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:47:42,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c [2022-11-02 20:47:43,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data/85d15f550/7331623e4d9d481f89976cc949263cd2/FLAGaaa3a2233 [2022-11-02 20:47:43,698 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:47:43,702 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c [2022-11-02 20:47:43,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data/85d15f550/7331623e4d9d481f89976cc949263cd2/FLAGaaa3a2233 [2022-11-02 20:47:43,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/data/85d15f550/7331623e4d9d481f89976cc949263cd2 [2022-11-02 20:47:43,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:47:43,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:47:43,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:43,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:47:43,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:47:43,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:43" (1/1) ... [2022-11-02 20:47:43,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2074da4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:43, skipping insertion in model container [2022-11-02 20:47:43,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:43" (1/1) ... [2022-11-02 20:47:43,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:47:44,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:47:44,202 WARN L230 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_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c[1107,1120] [2022-11-02 20:47:44,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:44,498 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:47:44,508 WARN L230 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_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul11.c[1107,1120] [2022-11-02 20:47:44,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:44,595 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:47:44,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44 WrapperNode [2022-11-02 20:47:44,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:44,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:44,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:47:44,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:47:44,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,702 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 835 [2022-11-02 20:47:44,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:44,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:47:44,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:47:44,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:47:44,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,757 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:47:44,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:47:44,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:47:44,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:47:44,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (1/1) ... [2022-11-02 20:47:44,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:44,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:44,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:47:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:47:44,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:47:45,145 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:47:45,148 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:47:46,281 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:47:46,302 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:47:46,303 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:47:46,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:46 BoogieIcfgContainer [2022-11-02 20:47:46,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:47:46,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:47:46,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:47:46,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:47:46,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:47:43" (1/3) ... [2022-11-02 20:47:46,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1780fc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:46, skipping insertion in model container [2022-11-02 20:47:46,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:44" (2/3) ... [2022-11-02 20:47:46,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1780fc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:46, skipping insertion in model container [2022-11-02 20:47:46,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:46" (3/3) ... [2022-11-02 20:47:46,327 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul11.c [2022-11-02 20:47:46,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:47:46,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:47:46,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:47:46,432 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;@adb5c6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:47:46,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:47:46,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 84 states have internal predecessors, (124), 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) [2022-11-02 20:47:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:46,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:46,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:46,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1892373183, now seen corresponding path program 1 times [2022-11-02 20:47:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:46,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467877294] [2022-11-02 20:47:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:46,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:46,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:46,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:46,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:47:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:46,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:46,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:46,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:46,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:46,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467877294] [2022-11-02 20:47:46,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467877294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:46,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:46,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846689991] [2022-11-02 20:47:46,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:46,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:46,918 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 84 states have internal predecessors, (124), 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 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:47,052 INFO L93 Difference]: Finished difference Result 321 states and 479 transitions. [2022-11-02 20:47:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:47,066 INFO L225 Difference]: With dead ends: 321 [2022-11-02 20:47:47,066 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:47:47,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:47,073 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 341 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:47,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 458 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:47:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 83. [2022-11-02 20:47:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 states have internal predecessors, (120), 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) [2022-11-02 20:47:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2022-11-02 20:47:47,117 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 17 [2022-11-02 20:47:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:47,117 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2022-11-02 20:47:47,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2022-11-02 20:47:47,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:47,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:47,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:47,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:47,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:47,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1391476863, now seen corresponding path program 1 times [2022-11-02 20:47:47,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:47,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636375277] [2022-11-02 20:47:47,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:47,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:47,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:47,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:47:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:47,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:47,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:47,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:47,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:47,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636375277] [2022-11-02 20:47:47,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636375277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:47,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:47,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085877520] [2022-11-02 20:47:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:47,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:47,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:47,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:47,671 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:47,750 INFO L93 Difference]: Finished difference Result 317 states and 463 transitions. [2022-11-02 20:47:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:47,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:47,752 INFO L225 Difference]: With dead ends: 317 [2022-11-02 20:47:47,753 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:47:47,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:47,755 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 335 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:47,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 457 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:47:47,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 85. [2022-11-02 20:47:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 84 states have internal predecessors, (122), 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) [2022-11-02 20:47:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2022-11-02 20:47:47,767 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 17 [2022-11-02 20:47:47,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:47,767 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2022-11-02 20:47:47,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2022-11-02 20:47:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:47,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:47,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:47,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:47,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:47,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1649642301, now seen corresponding path program 1 times [2022-11-02 20:47:47,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:47,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387927128] [2022-11-02 20:47:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:47,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:47,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:47,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:47:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:48,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:48,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:48,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:48,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:48,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387927128] [2022-11-02 20:47:48,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387927128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:48,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:48,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:48,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956212821] [2022-11-02 20:47:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:48,265 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:48,331 INFO L93 Difference]: Finished difference Result 317 states and 462 transitions. [2022-11-02 20:47:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:48,334 INFO L225 Difference]: With dead ends: 317 [2022-11-02 20:47:48,334 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:47:48,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:48,336 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 329 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:48,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 456 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:47:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 87. [2022-11-02 20:47:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.441860465116279) internal successors, (124), 86 states have internal predecessors, (124), 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) [2022-11-02 20:47:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2022-11-02 20:47:48,347 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 17 [2022-11-02 20:47:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:48,347 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2022-11-02 20:47:48,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2022-11-02 20:47:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:48,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:48,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:48,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 20:47:48,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:48,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:48,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1256615291, now seen corresponding path program 1 times [2022-11-02 20:47:48,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:48,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506886797] [2022-11-02 20:47:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:48,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:48,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:48,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:47:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:48,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:48,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:48,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:48,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:48,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506886797] [2022-11-02 20:47:48,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506886797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:48,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:48,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361038098] [2022-11-02 20:47:48,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:48,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:48,799 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:48,855 INFO L93 Difference]: Finished difference Result 317 states and 461 transitions. [2022-11-02 20:47:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:48,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:48,857 INFO L225 Difference]: With dead ends: 317 [2022-11-02 20:47:48,858 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:47:48,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:48,859 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 323 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:48,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 455 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:47:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 89. [2022-11-02 20:47:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 states have internal predecessors, (126), 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) [2022-11-02 20:47:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2022-11-02 20:47:48,868 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 17 [2022-11-02 20:47:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:48,868 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2022-11-02 20:47:48,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2022-11-02 20:47:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:48,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:48,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:48,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-02 20:47:49,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:49,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash 447268665, now seen corresponding path program 1 times [2022-11-02 20:47:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:49,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61921450] [2022-11-02 20:47:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:49,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:49,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:49,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:49,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:47:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:49,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:49,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:49,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:49,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:49,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61921450] [2022-11-02 20:47:49,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61921450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:49,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:49,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:49,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170834210] [2022-11-02 20:47:49,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:49,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:49,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:49,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:49,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:49,401 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:49,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:49,466 INFO L93 Difference]: Finished difference Result 317 states and 460 transitions. [2022-11-02 20:47:49,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:49,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:49,469 INFO L225 Difference]: With dead ends: 317 [2022-11-02 20:47:49,470 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:47:49,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:49,476 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 317 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:49,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 454 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:47:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 91. [2022-11-02 20:47:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 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) [2022-11-02 20:47:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 128 transitions. [2022-11-02 20:47:49,487 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 128 transitions. Word has length 17 [2022-11-02 20:47:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:49,487 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 128 transitions. [2022-11-02 20:47:49,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 128 transitions. [2022-11-02 20:47:49,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:49,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:49,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:49,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:49,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:49,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash 504526967, now seen corresponding path program 1 times [2022-11-02 20:47:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:49,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490925614] [2022-11-02 20:47:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:49,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:49,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:49,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:47:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:49,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:49,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:50,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:50,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:50,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490925614] [2022-11-02 20:47:50,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490925614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:50,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:50,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:50,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084637216] [2022-11-02 20:47:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:50,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:50,008 INFO L87 Difference]: Start difference. First operand 91 states and 128 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:50,056 INFO L93 Difference]: Finished difference Result 317 states and 459 transitions. [2022-11-02 20:47:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:50,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:50,059 INFO L225 Difference]: With dead ends: 317 [2022-11-02 20:47:50,059 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:47:50,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:50,061 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 311 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:50,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 453 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:47:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 93. [2022-11-02 20:47:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 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) [2022-11-02 20:47:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2022-11-02 20:47:50,068 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 17 [2022-11-02 20:47:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:50,069 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2022-11-02 20:47:50,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 20:47:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2022-11-02 20:47:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:47:50,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:50,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:50,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:50,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:50,284 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:50,284 INFO L85 PathProgramCache]: Analyzing trace with hash 504586549, now seen corresponding path program 1 times [2022-11-02 20:47:50,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:50,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168026300] [2022-11-02 20:47:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:50,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:50,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:50,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:47:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:50,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 20:47:50,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:51,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:51,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:51,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168026300] [2022-11-02 20:47:51,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168026300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:51,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:51,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 20:47:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740833662] [2022-11-02 20:47:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:51,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:47:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:51,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:47:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:47:51,387 INFO L87 Difference]: Start difference. First operand 93 states and 130 transitions. Second operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-11-02 20:47:58,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:58,450 INFO L93 Difference]: Finished difference Result 652 states and 940 transitions. [2022-11-02 20:47:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-02 20:47:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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 17 [2022-11-02 20:47:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:58,464 INFO L225 Difference]: With dead ends: 652 [2022-11-02 20:47:58,464 INFO L226 Difference]: Without dead ends: 650 [2022-11-02 20:47:58,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=971, Invalid=3585, Unknown=0, NotChecked=0, Total=4556 [2022-11-02 20:47:58,468 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 1446 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:58,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 2698 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 20:47:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-11-02 20:47:58,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 105. [2022-11-02 20:47:58,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4134615384615385) internal successors, (147), 104 states have internal predecessors, (147), 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) [2022-11-02 20:47:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 147 transitions. [2022-11-02 20:47:58,491 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 147 transitions. Word has length 17 [2022-11-02 20:47:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:58,492 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 147 transitions. [2022-11-02 20:47:58,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-11-02 20:47:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 147 transitions. [2022-11-02 20:47:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:47:58,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:58,497 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:47:58,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:58,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:58,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash -205572357, now seen corresponding path program 1 times [2022-11-02 20:47:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:58,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721035665] [2022-11-02 20:47:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:58,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:58,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:58,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:58,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:47:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:47:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:59,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:59,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:59,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721035665] [2022-11-02 20:47:59,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721035665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:59,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:59,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789436157] [2022-11-02 20:47:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:59,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:59,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:59,375 INFO L87 Difference]: Start difference. First operand 105 states and 147 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:47:59,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:59,770 INFO L93 Difference]: Finished difference Result 351 states and 507 transitions. [2022-11-02 20:47:59,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:59,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 94 [2022-11-02 20:47:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:59,773 INFO L225 Difference]: With dead ends: 351 [2022-11-02 20:47:59,773 INFO L226 Difference]: Without dead ends: 260 [2022-11-02 20:47:59,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:59,774 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 296 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:59,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 398 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:47:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-02 20:47:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 109. [2022-11-02 20:47:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 108 states have internal predecessors, (151), 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) [2022-11-02 20:47:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2022-11-02 20:47:59,784 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 94 [2022-11-02 20:47:59,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:59,784 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2022-11-02 20:47:59,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:47:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2022-11-02 20:47:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:47:59,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:59,788 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:47:59,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:59,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:59,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash -178506755, now seen corresponding path program 1 times [2022-11-02 20:47:59,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:59,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359587698] [2022-11-02 20:48:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:00,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:00,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:00,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:48:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:00,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:48:00,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:00,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:00,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:00,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359587698] [2022-11-02 20:48:00,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359587698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:00,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:00,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:48:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293464537] [2022-11-02 20:48:00,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:48:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:48:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:48:00,732 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-11-02 20:48:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:01,273 INFO L93 Difference]: Finished difference Result 380 states and 546 transitions. [2022-11-02 20:48:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:01,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:01,275 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:48:01,276 INFO L226 Difference]: Without dead ends: 289 [2022-11-02 20:48:01,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:01,277 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 426 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:01,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 617 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:48:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-02 20:48:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 111. [2022-11-02 20:48:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 110 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) [2022-11-02 20:48:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2022-11-02 20:48:01,285 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 94 [2022-11-02 20:48:01,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:01,285 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2022-11-02 20:48:01,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-11-02 20:48:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2022-11-02 20:48:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:01,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:01,288 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:01,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:01,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1555597695, now seen corresponding path program 1 times [2022-11-02 20:48:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:01,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256796006] [2022-11-02 20:48:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:01,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:01,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:01,513 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:01,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:48:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:02,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:48:02,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:02,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:02,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256796006] [2022-11-02 20:48:02,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256796006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:02,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:02,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:48:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480796477] [2022-11-02 20:48:02,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:02,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:48:02,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:48:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:48:02,217 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-11-02 20:48:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:02,640 INFO L93 Difference]: Finished difference Result 380 states and 545 transitions. [2022-11-02 20:48:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:02,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:02,642 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:48:02,643 INFO L226 Difference]: Without dead ends: 289 [2022-11-02 20:48:02,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:02,645 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 409 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:02,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 607 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:48:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-02 20:48:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 117. [2022-11-02 20:48:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3879310344827587) internal successors, (161), 116 states have internal predecessors, (161), 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) [2022-11-02 20:48:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions. [2022-11-02 20:48:02,655 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 94 [2022-11-02 20:48:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:02,659 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 161 transitions. [2022-11-02 20:48:02,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-11-02 20:48:02,660 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions. [2022-11-02 20:48:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:02,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:02,669 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:02,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:02,882 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1062971521, now seen corresponding path program 1 times [2022-11-02 20:48:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:02,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475497951] [2022-11-02 20:48:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:02,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:02,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:02,885 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:02,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:48:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:03,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:48:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:03,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:03,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475497951] [2022-11-02 20:48:03,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475497951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:03,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:03,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:48:03,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189816785] [2022-11-02 20:48:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:03,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:48:03,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:03,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:48:03,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:48:03,527 INFO L87 Difference]: Start difference. First operand 117 states and 161 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-11-02 20:48:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:03,966 INFO L93 Difference]: Finished difference Result 380 states and 544 transitions. [2022-11-02 20:48:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:03,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:03,968 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:48:03,968 INFO L226 Difference]: Without dead ends: 289 [2022-11-02 20:48:03,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:03,970 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 377 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:03,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 588 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:48:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-02 20:48:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 129. [2022-11-02 20:48:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.390625) internal successors, (178), 128 states have internal predecessors, (178), 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) [2022-11-02 20:48:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 178 transitions. [2022-11-02 20:48:03,978 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 178 transitions. Word has length 94 [2022-11-02 20:48:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:03,979 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 178 transitions. [2022-11-02 20:48:03,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-11-02 20:48:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 178 transitions. [2022-11-02 20:48:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:03,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:03,980 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:04,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:04,199 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1971078525, now seen corresponding path program 1 times [2022-11-02 20:48:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093041232] [2022-11-02 20:48:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:04,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:04,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:04,202 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:04,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:48:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:04,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:48:04,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:04,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:04,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:04,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093041232] [2022-11-02 20:48:04,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093041232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:04,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:04,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:48:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531772902] [2022-11-02 20:48:04,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:04,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:48:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:48:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:48:04,907 INFO L87 Difference]: Start difference. First operand 129 states and 178 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-11-02 20:48:05,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:05,296 INFO L93 Difference]: Finished difference Result 380 states and 543 transitions. [2022-11-02 20:48:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:05,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:05,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:05,299 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:48:05,299 INFO L226 Difference]: Without dead ends: 289 [2022-11-02 20:48:05,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:05,301 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 365 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:05,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 581 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:48:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-02 20:48:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 133. [2022-11-02 20:48:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 132 states have internal predecessors, (183), 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) [2022-11-02 20:48:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 183 transitions. [2022-11-02 20:48:05,309 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 183 transitions. Word has length 94 [2022-11-02 20:48:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:05,310 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 183 transitions. [2022-11-02 20:48:05,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-11-02 20:48:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 183 transitions. [2022-11-02 20:48:05,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:05,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:05,312 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:05,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:05,530 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:05,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1527177851, now seen corresponding path program 1 times [2022-11-02 20:48:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:05,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449914319] [2022-11-02 20:48:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:05,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:05,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:05,532 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:05,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:48:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:05,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:48:05,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:06,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:06,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:06,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449914319] [2022-11-02 20:48:06,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449914319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:06,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:06,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:48:06,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215861174] [2022-11-02 20:48:06,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:06,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:48:06,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:48:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:48:06,585 INFO L87 Difference]: Start difference. First operand 133 states and 183 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 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) [2022-11-02 20:48:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:08,394 INFO L93 Difference]: Finished difference Result 752 states and 1081 transitions. [2022-11-02 20:48:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:48:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:08,399 INFO L225 Difference]: With dead ends: 752 [2022-11-02 20:48:08,399 INFO L226 Difference]: Without dead ends: 661 [2022-11-02 20:48:08,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:48:08,401 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1484 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:08,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1765 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:48:08,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-11-02 20:48:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 141. [2022-11-02 20:48:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.3714285714285714) internal successors, (192), 140 states have internal predecessors, (192), 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) [2022-11-02 20:48:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2022-11-02 20:48:08,412 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 94 [2022-11-02 20:48:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:08,413 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2022-11-02 20:48:08,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 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) [2022-11-02 20:48:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2022-11-02 20:48:08,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:08,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:08,415 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:08,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:08,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:08,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:08,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash 739203335, now seen corresponding path program 1 times [2022-11-02 20:48:08,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:08,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959733877] [2022-11-02 20:48:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:08,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:08,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:08,630 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:08,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:48:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:09,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:48:09,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:09,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:09,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:09,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959733877] [2022-11-02 20:48:09,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959733877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:09,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:09,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:48:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466274714] [2022-11-02 20:48:09,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:09,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:48:09,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:09,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:48:09,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:48:09,187 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:48:09,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:09,241 INFO L93 Difference]: Finished difference Result 359 states and 511 transitions. [2022-11-02 20:48:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:48:09,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:09,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:09,243 INFO L225 Difference]: With dead ends: 359 [2022-11-02 20:48:09,243 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 20:48:09,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:48:09,244 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 222 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:09,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 445 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:48:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 20:48:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 145. [2022-11-02 20:48:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3680555555555556) internal successors, (197), 144 states have internal predecessors, (197), 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) [2022-11-02 20:48:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 197 transitions. [2022-11-02 20:48:09,252 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 197 transitions. Word has length 94 [2022-11-02 20:48:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:09,253 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 197 transitions. [2022-11-02 20:48:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:48:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 197 transitions. [2022-11-02 20:48:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:09,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:09,255 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:09,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:09,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:09,476 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash 723684617, now seen corresponding path program 1 times [2022-11-02 20:48:09,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:09,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151302294] [2022-11-02 20:48:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:09,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:09,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:09,478 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:09,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:48:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:09,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:48:09,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:10,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:10,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:10,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151302294] [2022-11-02 20:48:10,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151302294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:10,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:10,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:48:10,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657152505] [2022-11-02 20:48:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:10,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:48:10,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:10,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:48:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:48:10,034 INFO L87 Difference]: Start difference. First operand 145 states and 197 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:48:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:10,182 INFO L93 Difference]: Finished difference Result 359 states and 510 transitions. [2022-11-02 20:48:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:48:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:10,185 INFO L225 Difference]: With dead ends: 359 [2022-11-02 20:48:10,185 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 20:48:10,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:48:10,189 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 216 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:10,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 444 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:48:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 20:48:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 147. [2022-11-02 20:48:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.3630136986301369) internal successors, (199), 146 states have internal predecessors, (199), 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) [2022-11-02 20:48:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2022-11-02 20:48:10,205 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 94 [2022-11-02 20:48:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:10,206 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2022-11-02 20:48:10,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:48:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2022-11-02 20:48:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:10,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:10,208 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:10,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:10,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:10,430 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:10,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash 370596235, now seen corresponding path program 1 times [2022-11-02 20:48:10,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:10,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773256852] [2022-11-02 20:48:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:10,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:10,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:10,432 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:10,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:48:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:10,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:48:10,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:11,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:11,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773256852] [2022-11-02 20:48:11,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773256852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:11,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:11,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:48:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191078436] [2022-11-02 20:48:11,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:11,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:48:11,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:48:11,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:48:11,071 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:48:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:11,128 INFO L93 Difference]: Finished difference Result 359 states and 509 transitions. [2022-11-02 20:48:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:48:11,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:11,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:11,131 INFO L225 Difference]: With dead ends: 359 [2022-11-02 20:48:11,131 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 20:48:11,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:48:11,132 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 210 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:11,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 440 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:48:11,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 20:48:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 149. [2022-11-02 20:48:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3581081081081081) internal successors, (201), 148 states have internal predecessors, (201), 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) [2022-11-02 20:48:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2022-11-02 20:48:11,141 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 94 [2022-11-02 20:48:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:11,141 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2022-11-02 20:48:11,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:48:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2022-11-02 20:48:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:11,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:11,143 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:11,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:11,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:11,358 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1264082573, now seen corresponding path program 1 times [2022-11-02 20:48:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:11,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676451209] [2022-11-02 20:48:11,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:11,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:11,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:11,361 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:11,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:48:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:11,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:48:11,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:11,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:11,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:11,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676451209] [2022-11-02 20:48:11,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676451209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:11,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:11,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:48:11,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011044476] [2022-11-02 20:48:11,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:11,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:48:11,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:48:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:48:11,912 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:48:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:12,009 INFO L93 Difference]: Finished difference Result 245 states and 341 transitions. [2022-11-02 20:48:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:48:12,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:12,011 INFO L225 Difference]: With dead ends: 245 [2022-11-02 20:48:12,011 INFO L226 Difference]: Without dead ends: 154 [2022-11-02 20:48:12,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:48:12,012 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 177 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:12,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 228 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:48:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-02 20:48:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2022-11-02 20:48:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3513513513513513) internal successors, (200), 148 states have internal predecessors, (200), 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) [2022-11-02 20:48:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2022-11-02 20:48:12,020 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 94 [2022-11-02 20:48:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:12,020 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2022-11-02 20:48:12,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-02 20:48:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2022-11-02 20:48:12,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:12,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:12,022 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:12,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:12,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:12,235 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:12,235 INFO L85 PathProgramCache]: Analyzing trace with hash -581284593, now seen corresponding path program 1 times [2022-11-02 20:48:12,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:12,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372198626] [2022-11-02 20:48:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:12,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:12,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:12,237 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:12,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:48:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:12,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:48:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:13,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:13,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:13,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372198626] [2022-11-02 20:48:13,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372198626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:13,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:13,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:13,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487296461] [2022-11-02 20:48:13,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:13,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:13,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:13,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:13,098 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:13,623 INFO L93 Difference]: Finished difference Result 426 states and 601 transitions. [2022-11-02 20:48:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:48:13,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:13,625 INFO L225 Difference]: With dead ends: 426 [2022-11-02 20:48:13,625 INFO L226 Difference]: Without dead ends: 335 [2022-11-02 20:48:13,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:13,627 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 378 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:13,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 720 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:48:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-02 20:48:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 157. [2022-11-02 20:48:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 156 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) [2022-11-02 20:48:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 210 transitions. [2022-11-02 20:48:13,635 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 210 transitions. Word has length 94 [2022-11-02 20:48:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:13,636 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 210 transitions. [2022-11-02 20:48:13,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 210 transitions. [2022-11-02 20:48:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:13,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:13,637 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:13,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:13,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:13,850 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:13,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:13,851 INFO L85 PathProgramCache]: Analyzing trace with hash 78246929, now seen corresponding path program 1 times [2022-11-02 20:48:13,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:13,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127028663] [2022-11-02 20:48:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:13,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:13,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:13,853 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:13,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:48:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:14,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:48:14,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:14,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:14,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:14,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127028663] [2022-11-02 20:48:14,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127028663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:14,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:14,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:14,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703667865] [2022-11-02 20:48:14,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:14,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:14,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:14,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:14,670 INFO L87 Difference]: Start difference. First operand 157 states and 210 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:15,173 INFO L93 Difference]: Finished difference Result 341 states and 476 transitions. [2022-11-02 20:48:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:15,175 INFO L225 Difference]: With dead ends: 341 [2022-11-02 20:48:15,176 INFO L226 Difference]: Without dead ends: 250 [2022-11-02 20:48:15,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:15,176 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 444 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:15,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 518 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:48:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-02 20:48:15,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 159. [2022-11-02 20:48:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.3417721518987342) internal successors, (212), 158 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 212 transitions. [2022-11-02 20:48:15,185 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 212 transitions. Word has length 94 [2022-11-02 20:48:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:15,186 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 212 transitions. [2022-11-02 20:48:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 212 transitions. [2022-11-02 20:48:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:15,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:15,187 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:15,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:15,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:15,402 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:15,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:15,403 INFO L85 PathProgramCache]: Analyzing trace with hash -765758573, now seen corresponding path program 1 times [2022-11-02 20:48:15,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:15,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369269386] [2022-11-02 20:48:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:15,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:15,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:15,405 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:15,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:48:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:15,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:48:15,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:16,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:16,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369269386] [2022-11-02 20:48:16,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369269386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:16,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:16,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147871457] [2022-11-02 20:48:16,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:16,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:16,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:16,209 INFO L87 Difference]: Start difference. First operand 159 states and 212 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:16,686 INFO L93 Difference]: Finished difference Result 437 states and 611 transitions. [2022-11-02 20:48:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:48:16,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:16,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:16,688 INFO L225 Difference]: With dead ends: 437 [2022-11-02 20:48:16,688 INFO L226 Difference]: Without dead ends: 344 [2022-11-02 20:48:16,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:16,689 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 369 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:16,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 717 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:48:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-02 20:48:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 163. [2022-11-02 20:48:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3333333333333333) internal successors, (216), 162 states have internal predecessors, (216), 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) [2022-11-02 20:48:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 216 transitions. [2022-11-02 20:48:16,697 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 216 transitions. Word has length 94 [2022-11-02 20:48:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:16,698 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 216 transitions. [2022-11-02 20:48:16,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 216 transitions. [2022-11-02 20:48:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:16,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:16,699 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:16,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:16,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:16,910 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash -838145131, now seen corresponding path program 1 times [2022-11-02 20:48:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:16,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282641158] [2022-11-02 20:48:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:16,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:16,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:16,914 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:16,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:48:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:48:17,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:17,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:17,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:17,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282641158] [2022-11-02 20:48:17,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282641158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:17,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:17,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838650164] [2022-11-02 20:48:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:17,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:17,703 INFO L87 Difference]: Start difference. First operand 163 states and 216 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:18,198 INFO L93 Difference]: Finished difference Result 440 states and 614 transitions. [2022-11-02 20:48:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:48:18,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:18,201 INFO L225 Difference]: With dead ends: 440 [2022-11-02 20:48:18,201 INFO L226 Difference]: Without dead ends: 347 [2022-11-02 20:48:18,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:18,202 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 366 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:18,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 716 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:48:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-02 20:48:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 165. [2022-11-02 20:48:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.329268292682927) internal successors, (218), 164 states have internal predecessors, (218), 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) [2022-11-02 20:48:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2022-11-02 20:48:18,217 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 94 [2022-11-02 20:48:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:18,217 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2022-11-02 20:48:18,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2022-11-02 20:48:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:18,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:18,218 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:18,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-02 20:48:18,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:18,430 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash -136545257, now seen corresponding path program 1 times [2022-11-02 20:48:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:18,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116939541] [2022-11-02 20:48:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:18,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:18,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:18,433 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:18,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:48:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:18,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:48:18,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:19,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:19,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:19,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116939541] [2022-11-02 20:48:19,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116939541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:19,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:19,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554440974] [2022-11-02 20:48:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:19,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:19,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:19,163 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:19,637 INFO L93 Difference]: Finished difference Result 442 states and 616 transitions. [2022-11-02 20:48:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:48:19,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:19,639 INFO L225 Difference]: With dead ends: 442 [2022-11-02 20:48:19,639 INFO L226 Difference]: Without dead ends: 349 [2022-11-02 20:48:19,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:19,641 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 363 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:19,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 715 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:48:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-02 20:48:19,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 167. [2022-11-02 20:48:19,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3253012048192772) internal successors, (220), 166 states have internal predecessors, (220), 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) [2022-11-02 20:48:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 220 transitions. [2022-11-02 20:48:19,650 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 220 transitions. Word has length 94 [2022-11-02 20:48:19,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:19,650 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 220 transitions. [2022-11-02 20:48:19,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 220 transitions. [2022-11-02 20:48:19,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:19,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:19,652 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:19,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 20:48:19,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:19,864 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1249658137, now seen corresponding path program 1 times [2022-11-02 20:48:19,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:19,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741447613] [2022-11-02 20:48:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:19,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:19,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:19,866 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:19,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:48:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:20,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:48:20,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:20,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:20,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:20,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741447613] [2022-11-02 20:48:20,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741447613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:20,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:20,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:20,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175640247] [2022-11-02 20:48:20,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:20,720 INFO L87 Difference]: Start difference. First operand 167 states and 220 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:21,188 INFO L93 Difference]: Finished difference Result 355 states and 490 transitions. [2022-11-02 20:48:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:21,190 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:48:21,190 INFO L226 Difference]: Without dead ends: 262 [2022-11-02 20:48:21,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:21,191 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 428 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:21,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 534 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:48:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-02 20:48:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 169. [2022-11-02 20:48:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3214285714285714) internal successors, (222), 168 states have internal predecessors, (222), 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) [2022-11-02 20:48:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2022-11-02 20:48:21,200 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 94 [2022-11-02 20:48:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:21,201 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2022-11-02 20:48:21,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2022-11-02 20:48:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:21,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:21,202 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:21,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:21,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:21,418 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1122081125, now seen corresponding path program 1 times [2022-11-02 20:48:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:21,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378646480] [2022-11-02 20:48:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:21,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:21,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:21,421 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:21,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:48:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:21,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:48:21,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:22,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:22,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:22,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378646480] [2022-11-02 20:48:22,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378646480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:22,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:22,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:22,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828064260] [2022-11-02 20:48:22,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:22,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:22,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:22,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:22,234 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:22,777 INFO L93 Difference]: Finished difference Result 453 states and 627 transitions. [2022-11-02 20:48:22,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:48:22,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:22,779 INFO L225 Difference]: With dead ends: 453 [2022-11-02 20:48:22,779 INFO L226 Difference]: Without dead ends: 358 [2022-11-02 20:48:22,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:22,780 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 357 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:22,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 713 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:48:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-02 20:48:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 173. [2022-11-02 20:48:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.313953488372093) internal successors, (226), 172 states have internal predecessors, (226), 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) [2022-11-02 20:48:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2022-11-02 20:48:22,788 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 94 [2022-11-02 20:48:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:22,788 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2022-11-02 20:48:22,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2022-11-02 20:48:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:22,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:22,790 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:22,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:22,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:22,990 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash -981532515, now seen corresponding path program 1 times [2022-11-02 20:48:22,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:22,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192609671] [2022-11-02 20:48:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:22,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:22,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:22,992 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:22,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:48:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:23,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:48:23,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:23,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:23,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:23,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192609671] [2022-11-02 20:48:23,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192609671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:23,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:23,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:23,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411951562] [2022-11-02 20:48:23,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:23,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:23,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:23,770 INFO L87 Difference]: Start difference. First operand 173 states and 226 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:24,170 INFO L93 Difference]: Finished difference Result 366 states and 501 transitions. [2022-11-02 20:48:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:24,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:24,172 INFO L225 Difference]: With dead ends: 366 [2022-11-02 20:48:24,172 INFO L226 Difference]: Without dead ends: 271 [2022-11-02 20:48:24,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:24,173 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 414 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:24,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 547 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:48:24,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-02 20:48:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 175. [2022-11-02 20:48:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.3103448275862069) internal successors, (228), 174 states have internal predecessors, (228), 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) [2022-11-02 20:48:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 228 transitions. [2022-11-02 20:48:24,185 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 228 transitions. Word has length 94 [2022-11-02 20:48:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:24,186 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 228 transitions. [2022-11-02 20:48:24,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 228 transitions. [2022-11-02 20:48:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:24,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:24,187 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:24,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:24,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:24,408 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:24,408 INFO L85 PathProgramCache]: Analyzing trace with hash -558830689, now seen corresponding path program 1 times [2022-11-02 20:48:24,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:24,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512888971] [2022-11-02 20:48:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:24,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:24,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:24,411 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:24,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:48:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:24,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:48:24,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:25,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:25,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:25,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512888971] [2022-11-02 20:48:25,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512888971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:25,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:25,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:25,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032532532] [2022-11-02 20:48:25,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:25,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:25,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:25,201 INFO L87 Difference]: Start difference. First operand 175 states and 228 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:25,734 INFO L93 Difference]: Finished difference Result 564 states and 780 transitions. [2022-11-02 20:48:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:25,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:25,737 INFO L225 Difference]: With dead ends: 564 [2022-11-02 20:48:25,737 INFO L226 Difference]: Without dead ends: 467 [2022-11-02 20:48:25,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:25,738 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 468 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:25,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 779 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:48:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-02 20:48:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 183. [2022-11-02 20:48:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.3076923076923077) internal successors, (238), 182 states have internal predecessors, (238), 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) [2022-11-02 20:48:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2022-11-02 20:48:25,747 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 94 [2022-11-02 20:48:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:25,748 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2022-11-02 20:48:25,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2022-11-02 20:48:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:25,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:25,749 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:25,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:25,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:25,949 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:25,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2047192865, now seen corresponding path program 1 times [2022-11-02 20:48:25,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:25,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49593115] [2022-11-02 20:48:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:25,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:25,953 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:25,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:48:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:26,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:48:26,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:26,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:48:26,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:26,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49593115] [2022-11-02 20:48:26,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49593115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:26,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:26,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:26,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22467596] [2022-11-02 20:48:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:26,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:26,794 INFO L87 Difference]: Start difference. First operand 183 states and 238 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:27,424 INFO L93 Difference]: Finished difference Result 570 states and 787 transitions. [2022-11-02 20:48:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:27,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:27,426 INFO L225 Difference]: With dead ends: 570 [2022-11-02 20:48:27,426 INFO L226 Difference]: Without dead ends: 473 [2022-11-02 20:48:27,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:27,427 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 463 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:27,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 783 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:48:27,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-02 20:48:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 187. [2022-11-02 20:48:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.3064516129032258) internal successors, (243), 186 states have internal predecessors, (243), 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) [2022-11-02 20:48:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 243 transitions. [2022-11-02 20:48:27,436 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 243 transitions. Word has length 94 [2022-11-02 20:48:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:27,437 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 243 transitions. [2022-11-02 20:48:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 243 transitions. [2022-11-02 20:48:27,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:27,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:27,438 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:27,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:27,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:27,654 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash 458844963, now seen corresponding path program 1 times [2022-11-02 20:48:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:27,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287797337] [2022-11-02 20:48:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:27,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:27,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:27,656 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:27,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:48:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:28,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:48:28,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:28,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:28,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:28,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287797337] [2022-11-02 20:48:28,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287797337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:28,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:28,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-02 20:48:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232293076] [2022-11-02 20:48:28,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:28,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:28,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:28,445 INFO L87 Difference]: Start difference. First operand 187 states and 243 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:28,634 INFO L93 Difference]: Finished difference Result 464 states and 636 transitions. [2022-11-02 20:48:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:48:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:28,635 INFO L225 Difference]: With dead ends: 464 [2022-11-02 20:48:28,635 INFO L226 Difference]: Without dead ends: 367 [2022-11-02 20:48:28,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:48:28,636 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 636 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:28,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 741 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:48:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-02 20:48:28,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 192. [2022-11-02 20:48:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3036649214659686) internal successors, (249), 191 states have internal predecessors, (249), 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) [2022-11-02 20:48:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 249 transitions. [2022-11-02 20:48:28,648 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 249 transitions. Word has length 94 [2022-11-02 20:48:28,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:28,649 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 249 transitions. [2022-11-02 20:48:28,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 249 transitions. [2022-11-02 20:48:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:28,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:28,650 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:28,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-02 20:48:28,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:28,871 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:28,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:28,871 INFO L85 PathProgramCache]: Analyzing trace with hash -552272287, now seen corresponding path program 1 times [2022-11-02 20:48:28,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:28,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387943490] [2022-11-02 20:48:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:28,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:28,873 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:28,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:48:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:29,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:48:29,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:29,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:29,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:29,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387943490] [2022-11-02 20:48:29,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387943490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:29,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:29,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-02 20:48:29,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131353837] [2022-11-02 20:48:29,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:29,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:29,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:29,598 INFO L87 Difference]: Start difference. First operand 192 states and 249 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:29,729 INFO L93 Difference]: Finished difference Result 465 states and 636 transitions. [2022-11-02 20:48:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:48:29,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:29,731 INFO L225 Difference]: With dead ends: 465 [2022-11-02 20:48:29,731 INFO L226 Difference]: Without dead ends: 368 [2022-11-02 20:48:29,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:48:29,732 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 629 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:29,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 742 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:48:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-02 20:48:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 194. [2022-11-02 20:48:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.3005181347150259) internal successors, (251), 193 states have internal predecessors, (251), 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) [2022-11-02 20:48:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 251 transitions. [2022-11-02 20:48:29,744 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 251 transitions. Word has length 94 [2022-11-02 20:48:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:29,744 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 251 transitions. [2022-11-02 20:48:29,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2022-11-02 20:48:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 251 transitions. [2022-11-02 20:48:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:29,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:29,746 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:29,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:29,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:29,962 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash -294106849, now seen corresponding path program 1 times [2022-11-02 20:48:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:29,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49886050] [2022-11-02 20:48:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:29,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:29,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:29,964 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:29,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:48:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:30,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:48:30,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:31,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:31,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:31,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49886050] [2022-11-02 20:48:31,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49886050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:31,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:31,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-02 20:48:31,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582970428] [2022-11-02 20:48:31,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:31,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:48:31,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:31,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:48:31,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:48:31,852 INFO L87 Difference]: Start difference. First operand 194 states and 251 transitions. Second operand has 13 states, 13 states have (on average 14.0) internal successors, (182), 13 states have internal predecessors, (182), 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) [2022-11-02 20:48:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:32,122 INFO L93 Difference]: Finished difference Result 375 states and 497 transitions. [2022-11-02 20:48:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:48:32,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.0) internal successors, (182), 13 states have internal predecessors, (182), 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 94 [2022-11-02 20:48:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:32,125 INFO L225 Difference]: With dead ends: 375 [2022-11-02 20:48:32,125 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 20:48:32,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:48:32,127 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 148 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:32,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 850 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-11-02 20:48:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 20:48:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-02 20:48:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.288808664259928) internal successors, (357), 277 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 357 transitions. [2022-11-02 20:48:32,146 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 357 transitions. Word has length 94 [2022-11-02 20:48:32,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:32,147 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 357 transitions. [2022-11-02 20:48:32,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.0) internal successors, (182), 13 states have internal predecessors, (182), 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) [2022-11-02 20:48:32,147 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 357 transitions. [2022-11-02 20:48:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:32,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:32,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:32,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-02 20:48:32,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:32,368 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:32,368 INFO L85 PathProgramCache]: Analyzing trace with hash -236848547, now seen corresponding path program 1 times [2022-11-02 20:48:32,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:32,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325434270] [2022-11-02 20:48:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:32,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:32,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:32,370 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:32,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:48:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:32,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:48:32,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:33,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:34,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:34,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325434270] [2022-11-02 20:48:34,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325434270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:34,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:34,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-02 20:48:34,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465325315] [2022-11-02 20:48:34,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:34,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:48:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:48:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:48:34,175 INFO L87 Difference]: Start difference. First operand 278 states and 357 transitions. Second operand has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 15 states have internal predecessors, (184), 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) [2022-11-02 20:48:34,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:34,636 INFO L93 Difference]: Finished difference Result 428 states and 568 transitions. [2022-11-02 20:48:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:48:34,636 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 15 states have internal predecessors, (184), 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 94 [2022-11-02 20:48:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:34,638 INFO L225 Difference]: With dead ends: 428 [2022-11-02 20:48:34,638 INFO L226 Difference]: Without dead ends: 282 [2022-11-02 20:48:34,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:48:34,651 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 171 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:34,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 817 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-11-02 20:48:34,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-02 20:48:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-11-02 20:48:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.2846975088967971) internal successors, (361), 281 states have internal predecessors, (361), 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) [2022-11-02 20:48:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 361 transitions. [2022-11-02 20:48:34,670 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 361 transitions. Word has length 94 [2022-11-02 20:48:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:34,670 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 361 transitions. [2022-11-02 20:48:34,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 15 states have internal predecessors, (184), 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) [2022-11-02 20:48:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 361 transitions. [2022-11-02 20:48:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:34,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:34,672 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:34,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:34,892 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -236788965, now seen corresponding path program 1 times [2022-11-02 20:48:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:34,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475882458] [2022-11-02 20:48:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:34,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:34,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:34,895 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:34,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:48:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:35,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 20:48:35,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:36,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:40,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:40,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475882458] [2022-11-02 20:48:40,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475882458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:40,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:40,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2022-11-02 20:48:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325032098] [2022-11-02 20:48:40,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:40,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:48:40,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:48:40,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:48:40,961 INFO L87 Difference]: Start difference. First operand 282 states and 361 transitions. Second operand has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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) [2022-11-02 20:48:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:45,131 INFO L93 Difference]: Finished difference Result 970 states and 1299 transitions. [2022-11-02 20:48:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:48:45,132 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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 94 [2022-11-02 20:48:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:45,135 INFO L225 Difference]: With dead ends: 970 [2022-11-02 20:48:45,136 INFO L226 Difference]: Without dead ends: 968 [2022-11-02 20:48:45,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=354, Invalid=3552, Unknown=0, NotChecked=0, Total=3906 [2022-11-02 20:48:45,138 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 684 mSDsluCounter, 3905 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 821 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:45,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 4114 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 352 Invalid, 0 Unknown, 821 Unchecked, 1.0s Time] [2022-11-02 20:48:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-02 20:48:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 506. [2022-11-02 20:48:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.299009900990099) internal successors, (656), 505 states have internal predecessors, (656), 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) [2022-11-02 20:48:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 656 transitions. [2022-11-02 20:48:45,175 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 656 transitions. Word has length 94 [2022-11-02 20:48:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:45,175 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 656 transitions. [2022-11-02 20:48:45,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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) [2022-11-02 20:48:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 656 transitions. [2022-11-02 20:48:45,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:45,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:45,177 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:45,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:45,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:45,397 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:45,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1046135591, now seen corresponding path program 1 times [2022-11-02 20:48:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:45,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002937209] [2022-11-02 20:48:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:45,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:45,400 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:45,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:48:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:45,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:48:45,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:46,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:46,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:46,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002937209] [2022-11-02 20:48:46,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002937209] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:48:46,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:48:46,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-02 20:48:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368060225] [2022-11-02 20:48:46,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:46,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:48:46,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:48:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:48:46,649 INFO L87 Difference]: Start difference. First operand 506 states and 656 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:48:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:46,975 INFO L93 Difference]: Finished difference Result 1109 states and 1513 transitions. [2022-11-02 20:48:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:48:46,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:46,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:46,978 INFO L225 Difference]: With dead ends: 1109 [2022-11-02 20:48:46,978 INFO L226 Difference]: Without dead ends: 807 [2022-11-02 20:48:46,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:48:46,979 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 529 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:46,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1121 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-11-02 20:48:46,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-11-02 20:48:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 535. [2022-11-02 20:48:47,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.301498127340824) internal successors, (695), 534 states have internal predecessors, (695), 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) [2022-11-02 20:48:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 695 transitions. [2022-11-02 20:48:47,018 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 695 transitions. Word has length 94 [2022-11-02 20:48:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:47,018 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 695 transitions. [2022-11-02 20:48:47,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:48:47,018 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 695 transitions. [2022-11-02 20:48:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:47,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:47,020 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:47,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:47,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:47,246 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:47,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash -629815975, now seen corresponding path program 1 times [2022-11-02 20:48:47,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:47,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773367709] [2022-11-02 20:48:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:47,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:47,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:47,248 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:47,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:48:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:47,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:48:47,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:48,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:48,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773367709] [2022-11-02 20:48:48,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773367709] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:48:48,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:48:48,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-02 20:48:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348459583] [2022-11-02 20:48:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:48,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:48:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:48:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:48:48,344 INFO L87 Difference]: Start difference. First operand 535 states and 695 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:48:48,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:48,583 INFO L93 Difference]: Finished difference Result 988 states and 1337 transitions. [2022-11-02 20:48:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:48:48,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 94 [2022-11-02 20:48:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:48,586 INFO L225 Difference]: With dead ends: 988 [2022-11-02 20:48:48,587 INFO L226 Difference]: Without dead ends: 797 [2022-11-02 20:48:48,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:48:48,588 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 739 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:48,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 820 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2022-11-02 20:48:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-02 20:48:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 535. [2022-11-02 20:48:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.297752808988764) internal successors, (693), 534 states have internal predecessors, (693), 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) [2022-11-02 20:48:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 693 transitions. [2022-11-02 20:48:48,626 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 693 transitions. Word has length 94 [2022-11-02 20:48:48,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:48,627 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 693 transitions. [2022-11-02 20:48:48,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:48:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 693 transitions. [2022-11-02 20:48:48,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:48:48,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:48,628 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:48:48,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:48,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:48,848 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -717753571, now seen corresponding path program 1 times [2022-11-02 20:48:48,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:48,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126206308] [2022-11-02 20:48:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:48,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:48,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:48,851 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:48,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:48:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:49,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-02 20:48:49,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:50,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:56,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:56,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126206308] [2022-11-02 20:48:56,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126206308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:56,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:56,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2022-11-02 20:48:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812991165] [2022-11-02 20:48:56,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:56,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:48:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:48:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:48:56,146 INFO L87 Difference]: Start difference. First operand 535 states and 693 transitions. Second operand has 42 states, 42 states have (on average 4.428571428571429) internal successors, (186), 42 states have internal predecessors, (186), 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) [2022-11-02 20:49:05,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:05,497 INFO L93 Difference]: Finished difference Result 1797 states and 2455 transitions. [2022-11-02 20:49:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-02 20:49:05,497 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.428571428571429) internal successors, (186), 42 states have internal predecessors, (186), 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 94 [2022-11-02 20:49:05,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:05,500 INFO L225 Difference]: With dead ends: 1797 [2022-11-02 20:49:05,500 INFO L226 Difference]: Without dead ends: 1795 [2022-11-02 20:49:05,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=1178, Invalid=7564, Unknown=0, NotChecked=0, Total=8742 [2022-11-02 20:49:05,502 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2371 mSDsluCounter, 6050 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 3107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1890 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:05,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 6342 Invalid, 3107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1163 Invalid, 0 Unknown, 1890 Unchecked, 2.7s Time] [2022-11-02 20:49:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2022-11-02 20:49:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 737. [2022-11-02 20:49:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.3383152173913044) internal successors, (985), 736 states have internal predecessors, (985), 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) [2022-11-02 20:49:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 985 transitions. [2022-11-02 20:49:05,564 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 985 transitions. Word has length 94 [2022-11-02 20:49:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:05,564 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 985 transitions. [2022-11-02 20:49:05,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.428571428571429) internal successors, (186), 42 states have internal predecessors, (186), 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) [2022-11-02 20:49:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 985 transitions. [2022-11-02 20:49:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:49:05,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:05,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:05,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-02 20:49:05,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:05,778 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:05,779 INFO L85 PathProgramCache]: Analyzing trace with hash -717693989, now seen corresponding path program 1 times [2022-11-02 20:49:05,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:05,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117522552] [2022-11-02 20:49:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:05,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:05,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:05,780 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:05,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:49:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:06,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:49:06,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:06,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:06,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:06,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117522552] [2022-11-02 20:49:06,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117522552] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:49:06,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:49:06,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 20:49:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482423057] [2022-11-02 20:49:06,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:06,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:49:06,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:49:06,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:49:06,974 INFO L87 Difference]: Start difference. First operand 737 states and 985 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:49:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:07,654 INFO L93 Difference]: Finished difference Result 2179 states and 3016 transitions. [2022-11-02 20:49:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:07,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 94 [2022-11-02 20:49:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:07,660 INFO L225 Difference]: With dead ends: 2179 [2022-11-02 20:49:07,660 INFO L226 Difference]: Without dead ends: 1646 [2022-11-02 20:49:07,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:49:07,662 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 643 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:07,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 972 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:49:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-02 20:49:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 745. [2022-11-02 20:49:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 1.331989247311828) internal successors, (991), 744 states have internal predecessors, (991), 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) [2022-11-02 20:49:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 991 transitions. [2022-11-02 20:49:07,718 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 991 transitions. Word has length 94 [2022-11-02 20:49:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:07,719 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 991 transitions. [2022-11-02 20:49:07,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:49:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 991 transitions. [2022-11-02 20:49:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:49:07,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:07,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:07,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:07,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:07,940 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:07,941 INFO L85 PathProgramCache]: Analyzing trace with hash -660495269, now seen corresponding path program 1 times [2022-11-02 20:49:07,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:07,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999386157] [2022-11-02 20:49:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:07,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:07,943 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:07,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:49:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:08,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:49:08,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:08,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:09,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:09,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999386157] [2022-11-02 20:49:09,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999386157] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:49:09,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:49:09,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 14 [2022-11-02 20:49:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578849152] [2022-11-02 20:49:09,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:09,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:49:09,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:09,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:49:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:49:09,111 INFO L87 Difference]: Start difference. First operand 745 states and 991 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:49:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:09,704 INFO L93 Difference]: Finished difference Result 1806 states and 2478 transitions. [2022-11-02 20:49:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:49:09,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 94 [2022-11-02 20:49:09,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:09,707 INFO L225 Difference]: With dead ends: 1806 [2022-11-02 20:49:09,707 INFO L226 Difference]: Without dead ends: 1265 [2022-11-02 20:49:09,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:49:09,709 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 776 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:09,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 602 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:49:09,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-11-02 20:49:09,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 739. [2022-11-02 20:49:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 1.3238482384823849) internal successors, (977), 738 states have internal predecessors, (977), 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) [2022-11-02 20:49:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 977 transitions. [2022-11-02 20:49:09,757 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 977 transitions. Word has length 94 [2022-11-02 20:49:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:09,757 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 977 transitions. [2022-11-02 20:49:09,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:49:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 977 transitions. [2022-11-02 20:49:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:49:09,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:09,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:09,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-02 20:49:09,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:09,963 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:09,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1527100197, now seen corresponding path program 1 times [2022-11-02 20:49:09,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:09,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100208638] [2022-11-02 20:49:09,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:09,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:09,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:09,965 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:09,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:49:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:10,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:49:10,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:10,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:11,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:11,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100208638] [2022-11-02 20:49:11,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100208638] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:49:11,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:49:11,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 20:49:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419815863] [2022-11-02 20:49:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:11,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:49:11,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:49:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:49:11,107 INFO L87 Difference]: Start difference. First operand 739 states and 977 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:49:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:11,848 INFO L93 Difference]: Finished difference Result 1989 states and 2713 transitions. [2022-11-02 20:49:11,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:11,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 94 [2022-11-02 20:49:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:11,853 INFO L225 Difference]: With dead ends: 1989 [2022-11-02 20:49:11,853 INFO L226 Difference]: Without dead ends: 1454 [2022-11-02 20:49:11,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:49:11,855 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 885 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:11,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 752 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:49:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-11-02 20:49:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 743. [2022-11-02 20:49:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.3180592991913747) internal successors, (978), 742 states have internal predecessors, (978), 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) [2022-11-02 20:49:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 978 transitions. [2022-11-02 20:49:11,905 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 978 transitions. Word has length 94 [2022-11-02 20:49:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:11,905 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 978 transitions. [2022-11-02 20:49:11,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:49:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 978 transitions. [2022-11-02 20:49:11,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:49:11,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:11,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:11,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-02 20:49:12,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:12,107 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1110780581, now seen corresponding path program 1 times [2022-11-02 20:49:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:12,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411678555] [2022-11-02 20:49:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:12,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:12,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:12,109 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:12,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:49:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:12,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:49:12,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:12,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:13,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:13,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411678555] [2022-11-02 20:49:13,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411678555] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:49:13,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:49:13,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 14 [2022-11-02 20:49:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452546590] [2022-11-02 20:49:13,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:13,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:49:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:49:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:49:13,220 INFO L87 Difference]: Start difference. First operand 743 states and 978 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:49:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:13,717 INFO L93 Difference]: Finished difference Result 1525 states and 2060 transitions. [2022-11-02 20:49:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:49:13,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 94 [2022-11-02 20:49:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:13,720 INFO L225 Difference]: With dead ends: 1525 [2022-11-02 20:49:13,720 INFO L226 Difference]: Without dead ends: 1229 [2022-11-02 20:49:13,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:49:13,726 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 792 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:13,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 702 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:49:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-11-02 20:49:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 743. [2022-11-02 20:49:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.3045822102425877) internal successors, (968), 742 states have internal predecessors, (968), 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) [2022-11-02 20:49:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 968 transitions. [2022-11-02 20:49:13,775 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 968 transitions. Word has length 94 [2022-11-02 20:49:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:13,776 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 968 transitions. [2022-11-02 20:49:13,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2022-11-02 20:49:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 968 transitions. [2022-11-02 20:49:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:49:13,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:13,777 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:49:13,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:13,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:13,995 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:13,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1920127207, now seen corresponding path program 1 times [2022-11-02 20:49:13,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:13,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90929716] [2022-11-02 20:49:13,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:13,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:13,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:13,997 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:14,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:49:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:14,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 20:49:14,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:15,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:19,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90929716] [2022-11-02 20:49:19,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90929716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:19,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:19,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2022-11-02 20:49:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067593542] [2022-11-02 20:49:19,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:19,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:49:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:49:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:49:19,607 INFO L87 Difference]: Start difference. First operand 743 states and 968 transitions. Second operand has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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) [2022-11-02 20:49:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:26,107 INFO L93 Difference]: Finished difference Result 1553 states and 2057 transitions. [2022-11-02 20:49:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:49:26,108 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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 94 [2022-11-02 20:49:26,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:26,111 INFO L225 Difference]: With dead ends: 1553 [2022-11-02 20:49:26,111 INFO L226 Difference]: Without dead ends: 1551 [2022-11-02 20:49:26,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=918, Invalid=5088, Unknown=0, NotChecked=0, Total=6006 [2022-11-02 20:49:26,112 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 754 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1013 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:26,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 3899 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1007 Invalid, 0 Unknown, 1013 Unchecked, 2.2s Time] [2022-11-02 20:49:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-11-02 20:49:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 747. [2022-11-02 20:49:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.3029490616621984) internal successors, (972), 746 states have internal predecessors, (972), 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) [2022-11-02 20:49:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 972 transitions. [2022-11-02 20:49:26,165 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 972 transitions. Word has length 94 [2022-11-02 20:49:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:26,165 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 972 transitions. [2022-11-02 20:49:26,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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) [2022-11-02 20:49:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 972 transitions. [2022-11-02 20:49:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:49:26,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:26,167 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:49:26,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:26,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:26,387 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1134182243, now seen corresponding path program 1 times [2022-11-02 20:49:26,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:26,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159270630] [2022-11-02 20:49:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:26,389 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:26,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:49:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:26,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:49:26,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:27,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:27,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159270630] [2022-11-02 20:49:27,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159270630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:27,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:27,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-02 20:49:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030168871] [2022-11-02 20:49:27,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:27,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:49:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:49:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:49:27,846 INFO L87 Difference]: Start difference. First operand 747 states and 972 transitions. Second operand has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 13 states have internal predecessors, (178), 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) [2022-11-02 20:49:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:28,101 INFO L93 Difference]: Finished difference Result 981 states and 1289 transitions. [2022-11-02 20:49:28,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:49:28,101 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 13 states have internal predecessors, (178), 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 94 [2022-11-02 20:49:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:28,103 INFO L225 Difference]: With dead ends: 981 [2022-11-02 20:49:28,103 INFO L226 Difference]: Without dead ends: 788 [2022-11-02 20:49:28,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:49:28,103 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 127 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:28,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1124 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 85 Unchecked, 0.1s Time] [2022-11-02 20:49:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-02 20:49:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2022-11-02 20:49:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3024142312579416) internal successors, (1025), 787 states have internal predecessors, (1025), 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) [2022-11-02 20:49:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1025 transitions. [2022-11-02 20:49:28,169 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1025 transitions. Word has length 94 [2022-11-02 20:49:28,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:28,169 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1025 transitions. [2022-11-02 20:49:28,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 13 states have internal predecessors, (178), 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) [2022-11-02 20:49:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1025 transitions. [2022-11-02 20:49:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:49:28,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:28,171 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-11-02 20:49:28,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:28,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:28,386 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash -801169835, now seen corresponding path program 1 times [2022-11-02 20:49:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:28,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516389976] [2022-11-02 20:49:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:28,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:28,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:28,389 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:28,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:49:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:29,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:49:29,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 87 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:29,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 87 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:31,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:31,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516389976] [2022-11-02 20:49:31,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516389976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:31,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:31,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:49:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322217556] [2022-11-02 20:49:31,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:31,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:49:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:49:31,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:49:31,924 INFO L87 Difference]: Start difference. First operand 788 states and 1025 transitions. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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) [2022-11-02 20:49:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:32,811 INFO L93 Difference]: Finished difference Result 2487 states and 3310 transitions. [2022-11-02 20:49:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:49:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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 171 [2022-11-02 20:49:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:32,816 INFO L225 Difference]: With dead ends: 2487 [2022-11-02 20:49:32,816 INFO L226 Difference]: Without dead ends: 1903 [2022-11-02 20:49:32,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:49:32,817 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 893 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:32,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1482 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 230 Invalid, 0 Unknown, 102 Unchecked, 0.6s Time] [2022-11-02 20:49:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2022-11-02 20:49:32,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 842. [2022-11-02 20:49:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.2901307966706301) internal successors, (1085), 841 states have internal predecessors, (1085), 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) [2022-11-02 20:49:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1085 transitions. [2022-11-02 20:49:32,857 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1085 transitions. Word has length 171 [2022-11-02 20:49:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:32,857 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1085 transitions. [2022-11-02 20:49:32,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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) [2022-11-02 20:49:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1085 transitions. [2022-11-02 20:49:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:49:32,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:32,859 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:32,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-02 20:49:33,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:33,073 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:33,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:33,074 INFO L85 PathProgramCache]: Analyzing trace with hash 932934615, now seen corresponding path program 1 times [2022-11-02 20:49:33,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:33,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142073704] [2022-11-02 20:49:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:33,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:33,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:33,076 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:33,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:49:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:33,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:49:33,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 81 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:34,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 81 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:37,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:37,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142073704] [2022-11-02 20:49:37,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142073704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:37,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:37,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:49:37,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140310356] [2022-11-02 20:49:37,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:37,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:49:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:37,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:49:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:49:37,494 INFO L87 Difference]: Start difference. First operand 842 states and 1085 transitions. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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) [2022-11-02 20:49:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:38,455 INFO L93 Difference]: Finished difference Result 3218 states and 4302 transitions. [2022-11-02 20:49:38,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:49:38,456 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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 171 [2022-11-02 20:49:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:38,464 INFO L225 Difference]: With dead ends: 3218 [2022-11-02 20:49:38,464 INFO L226 Difference]: Without dead ends: 2634 [2022-11-02 20:49:38,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:49:38,466 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 816 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:38,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1525 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 229 Invalid, 0 Unknown, 82 Unchecked, 0.6s Time] [2022-11-02 20:49:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-11-02 20:49:38,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1357. [2022-11-02 20:49:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 1.3119469026548674) internal successors, (1779), 1356 states have internal predecessors, (1779), 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) [2022-11-02 20:49:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1779 transitions. [2022-11-02 20:49:38,533 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1779 transitions. Word has length 171 [2022-11-02 20:49:38,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:38,533 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1779 transitions. [2022-11-02 20:49:38,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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) [2022-11-02 20:49:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1779 transitions. [2022-11-02 20:49:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:49:38,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:38,536 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:38,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-02 20:49:38,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:38,750 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash 440308441, now seen corresponding path program 1 times [2022-11-02 20:49:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129484477] [2022-11-02 20:49:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:38,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:38,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:38,753 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:38,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:49:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:39,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:49:39,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:40,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:42,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:42,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129484477] [2022-11-02 20:49:42,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129484477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:42,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:42,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-02 20:49:42,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477177345] [2022-11-02 20:49:42,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:42,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:49:42,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:42,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:49:42,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:49:42,748 INFO L87 Difference]: Start difference. First operand 1357 states and 1779 transitions. Second operand has 16 states, 16 states have (on average 16.5) internal successors, (264), 16 states have internal predecessors, (264), 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) [2022-11-02 20:49:43,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:43,747 INFO L93 Difference]: Finished difference Result 4311 states and 5716 transitions. [2022-11-02 20:49:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:49:43,747 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.5) internal successors, (264), 16 states have internal predecessors, (264), 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 171 [2022-11-02 20:49:43,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:43,754 INFO L225 Difference]: With dead ends: 4311 [2022-11-02 20:49:43,754 INFO L226 Difference]: Without dead ends: 3266 [2022-11-02 20:49:43,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:49:43,756 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 884 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:43,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 2220 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 173 Unchecked, 0.6s Time] [2022-11-02 20:49:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2022-11-02 20:49:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 1493. [2022-11-02 20:49:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 1.301608579088472) internal successors, (1942), 1492 states have internal predecessors, (1942), 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) [2022-11-02 20:49:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 1942 transitions. [2022-11-02 20:49:43,839 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 1942 transitions. Word has length 171 [2022-11-02 20:49:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:43,839 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 1942 transitions. [2022-11-02 20:49:43,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.5) internal successors, (264), 16 states have internal predecessors, (264), 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) [2022-11-02 20:49:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 1942 transitions. [2022-11-02 20:49:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:49:43,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:43,841 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:43,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:44,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:44,050 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1701225691, now seen corresponding path program 1 times [2022-11-02 20:49:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:44,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024544212] [2022-11-02 20:49:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:44,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:44,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:44,053 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:44,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:49:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:44,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:49:44,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:45,851 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 65 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:45,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 65 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:48,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:48,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024544212] [2022-11-02 20:49:48,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024544212] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:48,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:48,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:49:48,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588786312] [2022-11-02 20:49:48,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:48,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:49:48,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:48,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:49:48,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:49:48,547 INFO L87 Difference]: Start difference. First operand 1493 states and 1942 transitions. Second operand has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 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) [2022-11-02 20:49:49,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:49,500 INFO L93 Difference]: Finished difference Result 4387 states and 5844 transitions. [2022-11-02 20:49:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:49:49,501 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 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 171 [2022-11-02 20:49:49,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:49,506 INFO L225 Difference]: With dead ends: 4387 [2022-11-02 20:49:49,506 INFO L226 Difference]: Without dead ends: 3354 [2022-11-02 20:49:49,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:49:49,508 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 634 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:49,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1040 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 80 Unchecked, 0.6s Time] [2022-11-02 20:49:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2022-11-02 20:49:49,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 2487. [2022-11-02 20:49:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.3109412711182622) internal successors, (3259), 2486 states have internal predecessors, (3259), 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) [2022-11-02 20:49:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3259 transitions. [2022-11-02 20:49:49,652 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3259 transitions. Word has length 171 [2022-11-02 20:49:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:49,653 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 3259 transitions. [2022-11-02 20:49:49,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 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) [2022-11-02 20:49:49,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3259 transitions. [2022-11-02 20:49:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:49:49,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:49,657 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:49,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-02 20:49:49,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:49,872 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:49,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2145126365, now seen corresponding path program 1 times [2022-11-02 20:49:49,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:49,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573498300] [2022-11-02 20:49:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:49,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:49,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:49,874 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:49,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:49:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:50,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 20:49:50,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:51,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:56,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:56,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573498300] [2022-11-02 20:49:56,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573498300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:56,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:56,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-02 20:49:56,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802950037] [2022-11-02 20:49:56,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:56,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:49:56,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:56,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:49:56,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:49:56,743 INFO L87 Difference]: Start difference. First operand 2487 states and 3259 transitions. Second operand has 29 states, 29 states have (on average 10.0) internal successors, (290), 29 states have internal predecessors, (290), 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) [2022-11-02 20:49:58,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:58,800 INFO L93 Difference]: Finished difference Result 6797 states and 8987 transitions. [2022-11-02 20:49:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:49:58,801 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.0) internal successors, (290), 29 states have internal predecessors, (290), 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 171 [2022-11-02 20:49:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:58,806 INFO L225 Difference]: With dead ends: 6797 [2022-11-02 20:49:58,806 INFO L226 Difference]: Without dead ends: 5164 [2022-11-02 20:49:58,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=476, Invalid=2604, Unknown=0, NotChecked=0, Total=3080 [2022-11-02 20:49:58,808 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1027 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 973 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:58,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 2145 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 203 Invalid, 0 Unknown, 973 Unchecked, 0.6s Time] [2022-11-02 20:49:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2022-11-02 20:49:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 2649. [2022-11-02 20:49:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2648 states have (on average 1.3032477341389728) internal successors, (3451), 2648 states have internal predecessors, (3451), 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) [2022-11-02 20:49:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3451 transitions. [2022-11-02 20:49:58,962 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3451 transitions. Word has length 171 [2022-11-02 20:49:58,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:58,962 INFO L495 AbstractCegarLoop]: Abstraction has 2649 states and 3451 transitions. [2022-11-02 20:49:58,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.0) internal successors, (290), 29 states have internal predecessors, (290), 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) [2022-11-02 20:49:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3451 transitions. [2022-11-02 20:49:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:49:58,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:58,964 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:58,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:59,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:59,165 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash 116540255, now seen corresponding path program 1 times [2022-11-02 20:49:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:59,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313509822] [2022-11-02 20:49:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:59,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:59,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:59,168 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:59,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:49:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:59,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:49:59,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 57 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:01,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 57 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:02,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:02,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313509822] [2022-11-02 20:50:02,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313509822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:02,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:02,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 20:50:02,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805716737] [2022-11-02 20:50:02,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:02,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:50:02,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:50:02,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:50:02,538 INFO L87 Difference]: Start difference. First operand 2649 states and 3451 transitions. Second operand has 20 states, 20 states have (on average 14.85) internal successors, (297), 20 states have internal predecessors, (297), 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) [2022-11-02 20:50:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:03,059 INFO L93 Difference]: Finished difference Result 4115 states and 5409 transitions. [2022-11-02 20:50:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:50:03,060 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.85) internal successors, (297), 20 states have internal predecessors, (297), 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 171 [2022-11-02 20:50:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:03,063 INFO L225 Difference]: With dead ends: 4115 [2022-11-02 20:50:03,063 INFO L226 Difference]: Without dead ends: 2791 [2022-11-02 20:50:03,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 323 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:50:03,064 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 192 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:03,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1817 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 118 Unchecked, 0.0s Time] [2022-11-02 20:50:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-11-02 20:50:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2791. [2022-11-02 20:50:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 1.3043010752688171) internal successors, (3639), 2790 states have internal predecessors, (3639), 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) [2022-11-02 20:50:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3639 transitions. [2022-11-02 20:50:03,217 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3639 transitions. Word has length 171 [2022-11-02 20:50:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:03,217 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 3639 transitions. [2022-11-02 20:50:03,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.85) internal successors, (297), 20 states have internal predecessors, (297), 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) [2022-11-02 20:50:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3639 transitions. [2022-11-02 20:50:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:03,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:03,219 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:03,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 20:50:03,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:03,420 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:03,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:03,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1010026593, now seen corresponding path program 1 times [2022-11-02 20:50:03,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:03,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62635327] [2022-11-02 20:50:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:03,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:03,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:03,425 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:03,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:50:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:04,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:50:04,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 47 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:05,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 47 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:07,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62635327] [2022-11-02 20:50:07,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62635327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:07,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:07,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-02 20:50:07,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377959053] [2022-11-02 20:50:07,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:07,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:50:07,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:50:07,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:50:07,173 INFO L87 Difference]: Start difference. First operand 2791 states and 3639 transitions. Second operand has 17 states, 17 states have (on average 18.0) internal successors, (306), 17 states have internal predecessors, (306), 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) [2022-11-02 20:50:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:08,693 INFO L93 Difference]: Finished difference Result 5539 states and 7337 transitions. [2022-11-02 20:50:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:50:08,694 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.0) internal successors, (306), 17 states have internal predecessors, (306), 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 171 [2022-11-02 20:50:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:08,700 INFO L225 Difference]: With dead ends: 5539 [2022-11-02 20:50:08,700 INFO L226 Difference]: Without dead ends: 3840 [2022-11-02 20:50:08,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:50:08,703 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 706 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:08,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 2082 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 417 Invalid, 0 Unknown, 106 Unchecked, 1.1s Time] [2022-11-02 20:50:08,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3840 states. [2022-11-02 20:50:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3840 to 2763. [2022-11-02 20:50:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.3023171614771905) internal successors, (3597), 2762 states have internal predecessors, (3597), 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) [2022-11-02 20:50:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3597 transitions. [2022-11-02 20:50:08,921 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3597 transitions. Word has length 171 [2022-11-02 20:50:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:08,921 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3597 transitions. [2022-11-02 20:50:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.0) internal successors, (306), 17 states have internal predecessors, (306), 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) [2022-11-02 20:50:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3597 transitions. [2022-11-02 20:50:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:08,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:08,925 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-11-02 20:50:08,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:09,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:09,150 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash 166021091, now seen corresponding path program 1 times [2022-11-02 20:50:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:09,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442161708] [2022-11-02 20:50:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:09,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:09,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:09,153 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:09,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:50:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:09,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:50:09,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 45 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:10,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 45 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:12,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442161708] [2022-11-02 20:50:12,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442161708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:12,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:12,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-02 20:50:12,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186964532] [2022-11-02 20:50:12,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:12,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:50:12,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:12,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:50:12,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:50:12,503 INFO L87 Difference]: Start difference. First operand 2763 states and 3597 transitions. Second operand has 17 states, 17 states have (on average 18.11764705882353) internal successors, (308), 17 states have internal predecessors, (308), 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) [2022-11-02 20:50:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:12,904 INFO L93 Difference]: Finished difference Result 3808 states and 5005 transitions. [2022-11-02 20:50:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:50:12,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.11764705882353) internal successors, (308), 17 states have internal predecessors, (308), 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 171 [2022-11-02 20:50:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:12,910 INFO L225 Difference]: With dead ends: 3808 [2022-11-02 20:50:12,910 INFO L226 Difference]: Without dead ends: 2819 [2022-11-02 20:50:12,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:50:12,913 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 75 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:12,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1299 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 126 Unchecked, 0.2s Time] [2022-11-02 20:50:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2022-11-02 20:50:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2819. [2022-11-02 20:50:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2818 states have (on average 1.2963094393186658) internal successors, (3653), 2818 states have internal predecessors, (3653), 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) [2022-11-02 20:50:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3653 transitions. [2022-11-02 20:50:13,119 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3653 transitions. Word has length 171 [2022-11-02 20:50:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:13,119 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 3653 transitions. [2022-11-02 20:50:13,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.11764705882353) internal successors, (308), 17 states have internal predecessors, (308), 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) [2022-11-02 20:50:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3653 transitions. [2022-11-02 20:50:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:13,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:13,123 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:13,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:13,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:13,338 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash 93634533, now seen corresponding path program 1 times [2022-11-02 20:50:13,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:13,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141779743] [2022-11-02 20:50:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:13,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:13,341 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:13,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:50:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:14,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:50:14,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:15,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:17,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:17,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141779743] [2022-11-02 20:50:17,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141779743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:17,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:17,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-02 20:50:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169074220] [2022-11-02 20:50:17,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:17,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:50:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:50:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:50:17,145 INFO L87 Difference]: Start difference. First operand 2819 states and 3653 transitions. Second operand has 17 states, 17 states have (on average 18.235294117647058) internal successors, (310), 17 states have internal predecessors, (310), 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) [2022-11-02 20:50:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:17,849 INFO L93 Difference]: Finished difference Result 4164 states and 5445 transitions. [2022-11-02 20:50:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:50:17,849 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.235294117647058) internal successors, (310), 17 states have internal predecessors, (310), 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 171 [2022-11-02 20:50:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:17,856 INFO L225 Difference]: With dead ends: 4164 [2022-11-02 20:50:17,856 INFO L226 Difference]: Without dead ends: 2862 [2022-11-02 20:50:17,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:50:17,859 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 106 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:17,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1184 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 146 Unchecked, 0.4s Time] [2022-11-02 20:50:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2022-11-02 20:50:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2819. [2022-11-02 20:50:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2818 states have (on average 1.2913413768630235) internal successors, (3639), 2818 states have internal predecessors, (3639), 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) [2022-11-02 20:50:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3639 transitions. [2022-11-02 20:50:18,070 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3639 transitions. Word has length 171 [2022-11-02 20:50:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:18,072 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 3639 transitions. [2022-11-02 20:50:18,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.235294117647058) internal successors, (310), 17 states have internal predecessors, (310), 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) [2022-11-02 20:50:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3639 transitions. [2022-11-02 20:50:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:18,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:18,075 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:18,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:18,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:18,297 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:18,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:18,298 INFO L85 PathProgramCache]: Analyzing trace with hash 795234407, now seen corresponding path program 1 times [2022-11-02 20:50:18,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:18,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291767371] [2022-11-02 20:50:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:18,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:18,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:18,300 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:18,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:50:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:19,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:50:19,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 41 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:20,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 41 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:22,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:22,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291767371] [2022-11-02 20:50:22,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291767371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:22,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:22,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-02 20:50:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836595666] [2022-11-02 20:50:22,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:22,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:50:22,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:50:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:50:22,073 INFO L87 Difference]: Start difference. First operand 2819 states and 3639 transitions. Second operand has 17 states, 17 states have (on average 18.352941176470587) internal successors, (312), 17 states have internal predecessors, (312), 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) [2022-11-02 20:50:22,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:22,711 INFO L93 Difference]: Finished difference Result 4420 states and 5779 transitions. [2022-11-02 20:50:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:50:22,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.352941176470587) internal successors, (312), 17 states have internal predecessors, (312), 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 171 [2022-11-02 20:50:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:22,715 INFO L225 Difference]: With dead ends: 4420 [2022-11-02 20:50:22,715 INFO L226 Difference]: Without dead ends: 2875 [2022-11-02 20:50:22,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:50:22,718 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 59 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:22,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1306 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 231 Unchecked, 0.4s Time] [2022-11-02 20:50:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-11-02 20:50:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2833. [2022-11-02 20:50:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2833 states, 2832 states have (on average 1.2824858757062148) internal successors, (3632), 2832 states have internal predecessors, (3632), 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) [2022-11-02 20:50:22,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3632 transitions. [2022-11-02 20:50:22,916 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3632 transitions. Word has length 171 [2022-11-02 20:50:22,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:22,917 INFO L495 AbstractCegarLoop]: Abstraction has 2833 states and 3632 transitions. [2022-11-02 20:50:22,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.352941176470587) internal successors, (312), 17 states have internal predecessors, (312), 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) [2022-11-02 20:50:22,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3632 transitions. [2022-11-02 20:50:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:22,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:22,920 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:22,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-02 20:50:23,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:23,121 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:23,121 INFO L85 PathProgramCache]: Analyzing trace with hash -190301461, now seen corresponding path program 1 times [2022-11-02 20:50:23,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:23,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677980322] [2022-11-02 20:50:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:23,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:23,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:23,123 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:23,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:50:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:23,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:50:23,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:24,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:26,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:26,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677980322] [2022-11-02 20:50:26,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677980322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:26,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:26,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-02 20:50:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606460335] [2022-11-02 20:50:26,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:26,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:50:26,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:50:26,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:50:26,408 INFO L87 Difference]: Start difference. First operand 2833 states and 3632 transitions. Second operand has 17 states, 17 states have (on average 18.58823529411765) internal successors, (316), 17 states have internal predecessors, (316), 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) [2022-11-02 20:50:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:26,851 INFO L93 Difference]: Finished difference Result 4406 states and 5723 transitions. [2022-11-02 20:50:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:50:26,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.58823529411765) internal successors, (316), 17 states have internal predecessors, (316), 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 171 [2022-11-02 20:50:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:26,854 INFO L225 Difference]: With dead ends: 4406 [2022-11-02 20:50:26,854 INFO L226 Difference]: Without dead ends: 2945 [2022-11-02 20:50:26,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:50:26,856 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 151 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:26,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 980 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2022-11-02 20:50:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2022-11-02 20:50:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2903. [2022-11-02 20:50:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 1.275671950379049) internal successors, (3702), 2902 states have internal predecessors, (3702), 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) [2022-11-02 20:50:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 3702 transitions. [2022-11-02 20:50:27,054 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 3702 transitions. Word has length 171 [2022-11-02 20:50:27,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:27,055 INFO L495 AbstractCegarLoop]: Abstraction has 2903 states and 3702 transitions. [2022-11-02 20:50:27,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.58823529411765) internal successors, (316), 17 states have internal predecessors, (316), 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) [2022-11-02 20:50:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 3702 transitions. [2022-11-02 20:50:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:27,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:27,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:27,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:27,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:27,278 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash -49752851, now seen corresponding path program 1 times [2022-11-02 20:50:27,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:27,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935760810] [2022-11-02 20:50:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:27,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:27,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:27,281 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:27,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:50:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:27,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:50:27,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 31 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:28,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 31 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:30,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:30,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935760810] [2022-11-02 20:50:30,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935760810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:30,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:30,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-02 20:50:30,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61603187] [2022-11-02 20:50:30,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:30,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:50:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:50:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:50:30,276 INFO L87 Difference]: Start difference. First operand 2903 states and 3702 transitions. Second operand has 17 states, 17 states have (on average 18.941176470588236) internal successors, (322), 17 states have internal predecessors, (322), 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) [2022-11-02 20:50:31,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:31,474 INFO L93 Difference]: Finished difference Result 9243 states and 11975 transitions. [2022-11-02 20:50:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:50:31,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.941176470588236) internal successors, (322), 17 states have internal predecessors, (322), 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 171 [2022-11-02 20:50:31,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:31,479 INFO L225 Difference]: With dead ends: 9243 [2022-11-02 20:50:31,479 INFO L226 Difference]: Without dead ends: 7964 [2022-11-02 20:50:31,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:50:31,482 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 506 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:31,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 2905 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 290 Invalid, 0 Unknown, 320 Unchecked, 0.8s Time] [2022-11-02 20:50:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7964 states. [2022-11-02 20:50:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7964 to 3327. [2022-11-02 20:50:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3326 states have (on average 1.2696933253156946) internal successors, (4223), 3326 states have internal predecessors, (4223), 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) [2022-11-02 20:50:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 4223 transitions. [2022-11-02 20:50:31,641 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 4223 transitions. Word has length 171 [2022-11-02 20:50:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:31,642 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 4223 transitions. [2022-11-02 20:50:31,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.941176470588236) internal successors, (322), 17 states have internal predecessors, (322), 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) [2022-11-02 20:50:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 4223 transitions. [2022-11-02 20:50:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:31,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:31,644 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:31,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-02 20:50:31,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:31,845 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:31,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:31,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1738696593, now seen corresponding path program 1 times [2022-11-02 20:50:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:31,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350728708] [2022-11-02 20:50:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:31,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:31,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:31,848 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:31,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:50:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:32,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:50:32,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:33,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:34,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:34,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350728708] [2022-11-02 20:50:34,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350728708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:34,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:34,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-02 20:50:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993770118] [2022-11-02 20:50:34,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:34,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:50:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:50:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:50:34,924 INFO L87 Difference]: Start difference. First operand 3327 states and 4223 transitions. Second operand has 19 states, 19 states have (on average 17.05263157894737) internal successors, (324), 19 states have internal predecessors, (324), 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) [2022-11-02 20:50:36,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:36,414 INFO L93 Difference]: Finished difference Result 6829 states and 8850 transitions. [2022-11-02 20:50:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:50:36,415 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 17.05263157894737) internal successors, (324), 19 states have internal predecessors, (324), 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 171 [2022-11-02 20:50:36,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:36,418 INFO L225 Difference]: With dead ends: 6829 [2022-11-02 20:50:36,418 INFO L226 Difference]: Without dead ends: 6044 [2022-11-02 20:50:36,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:50:36,420 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 757 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:36,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2550 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 384 Invalid, 0 Unknown, 330 Unchecked, 0.8s Time] [2022-11-02 20:50:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6044 states. [2022-11-02 20:50:36,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6044 to 3771. [2022-11-02 20:50:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 3770 states have (on average 1.2673740053050397) internal successors, (4778), 3770 states have internal predecessors, (4778), 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) [2022-11-02 20:50:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4778 transitions. [2022-11-02 20:50:36,563 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4778 transitions. Word has length 171 [2022-11-02 20:50:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:36,563 INFO L495 AbstractCegarLoop]: Abstraction has 3771 states and 4778 transitions. [2022-11-02 20:50:36,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.05263157894737) internal successors, (324), 19 states have internal predecessors, (324), 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) [2022-11-02 20:50:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4778 transitions. [2022-11-02 20:50:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:36,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:36,569 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:36,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:36,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:36,782 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:36,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash 967922801, now seen corresponding path program 1 times [2022-11-02 20:50:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:36,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076502485] [2022-11-02 20:50:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:36,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:36,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:36,785 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:36,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:50:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:37,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:50:37,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:39,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:40,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:40,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076502485] [2022-11-02 20:50:40,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076502485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:40,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:40,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:50:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302973567] [2022-11-02 20:50:40,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:40,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:50:40,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:40,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:50:40,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:50:40,726 INFO L87 Difference]: Start difference. First operand 3771 states and 4778 transitions. Second operand has 24 states, 24 states have (on average 13.666666666666666) internal successors, (328), 24 states have internal predecessors, (328), 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) [2022-11-02 20:50:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:41,513 INFO L93 Difference]: Finished difference Result 5769 states and 7324 transitions. [2022-11-02 20:50:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:50:41,514 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.666666666666666) internal successors, (328), 24 states have internal predecessors, (328), 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 171 [2022-11-02 20:50:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:41,517 INFO L225 Difference]: With dead ends: 5769 [2022-11-02 20:50:41,517 INFO L226 Difference]: Without dead ends: 5155 [2022-11-02 20:50:41,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 319 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:50:41,518 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 250 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:41,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 2527 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 256 Unchecked, 0.2s Time] [2022-11-02 20:50:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5155 states. [2022-11-02 20:50:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5155 to 5155. [2022-11-02 20:50:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 1.2576639503298408) internal successors, (6482), 5154 states have internal predecessors, (6482), 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) [2022-11-02 20:50:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 6482 transitions. [2022-11-02 20:50:41,735 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 6482 transitions. Word has length 171 [2022-11-02 20:50:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:41,735 INFO L495 AbstractCegarLoop]: Abstraction has 5155 states and 6482 transitions. [2022-11-02 20:50:41,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.666666666666666) internal successors, (328), 24 states have internal predecessors, (328), 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) [2022-11-02 20:50:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 6482 transitions. [2022-11-02 20:50:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:41,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:41,742 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:41,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:41,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:41,968 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:41,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash -43194449, now seen corresponding path program 1 times [2022-11-02 20:50:41,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:41,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260707217] [2022-11-02 20:50:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:41,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:41,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:41,971 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:41,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 20:50:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:42,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:50:42,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 20 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:44,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 20 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:45,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:45,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260707217] [2022-11-02 20:50:45,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260707217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:45,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:45,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:50:45,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087453153] [2022-11-02 20:50:45,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:45,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:50:45,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:50:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:50:45,695 INFO L87 Difference]: Start difference. First operand 5155 states and 6482 transitions. Second operand has 24 states, 24 states have (on average 13.75) internal successors, (330), 24 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:46,354 INFO L93 Difference]: Finished difference Result 5787 states and 7327 transitions. [2022-11-02 20:50:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:50:46,354 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.75) internal successors, (330), 24 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-11-02 20:50:46,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:46,357 INFO L225 Difference]: With dead ends: 5787 [2022-11-02 20:50:46,357 INFO L226 Difference]: Without dead ends: 5203 [2022-11-02 20:50:46,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 320 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:50:46,359 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 218 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:46,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2492 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 188 Unchecked, 0.1s Time] [2022-11-02 20:50:46,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2022-11-02 20:50:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5203. [2022-11-02 20:50:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.2552864282968088) internal successors, (6530), 5202 states have internal predecessors, (6530), 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) [2022-11-02 20:50:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 6530 transitions. [2022-11-02 20:50:46,629 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 6530 transitions. Word has length 171 [2022-11-02 20:50:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:46,629 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 6530 transitions. [2022-11-02 20:50:46,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.75) internal successors, (330), 24 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 6530 transitions. [2022-11-02 20:50:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:50:46,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:46,635 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:46,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-02 20:50:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:46,836 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash -265993617, now seen corresponding path program 1 times [2022-11-02 20:50:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:46,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020377481] [2022-11-02 20:50:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:46,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:46,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:46,839 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:46,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 20:50:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:47,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-02 20:50:47,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:50:49,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:50:54,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:54,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020377481] [2022-11-02 20:50:54,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020377481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:54,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:54,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2022-11-02 20:50:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668848141] [2022-11-02 20:50:54,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:54,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:50:54,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:50:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:50:54,805 INFO L87 Difference]: Start difference. First operand 5203 states and 6530 transitions. Second operand has 42 states, 42 states have (on average 6.0476190476190474) internal successors, (254), 42 states have internal predecessors, (254), 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) [2022-11-02 20:51:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:13,567 INFO L93 Difference]: Finished difference Result 12576 states and 16139 transitions. [2022-11-02 20:51:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-02 20:51:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.0476190476190474) internal successors, (254), 42 states have internal predecessors, (254), 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 171 [2022-11-02 20:51:13,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:13,576 INFO L225 Difference]: With dead ends: 12576 [2022-11-02 20:51:13,576 INFO L226 Difference]: Without dead ends: 12574 [2022-11-02 20:51:13,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4090 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=2866, Invalid=14164, Unknown=0, NotChecked=0, Total=17030 [2022-11-02 20:51:13,580 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 2532 mSDsluCounter, 9308 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 9795 SdHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2850 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:13,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2532 Valid, 9795 Invalid, 4557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1641 Invalid, 0 Unknown, 2850 Unchecked, 4.9s Time] [2022-11-02 20:51:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12574 states. [2022-11-02 20:51:13,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12574 to 4552. [2022-11-02 20:51:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4552 states, 4551 states have (on average 1.2460997582948803) internal successors, (5671), 4551 states have internal predecessors, (5671), 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) [2022-11-02 20:51:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 5671 transitions. [2022-11-02 20:51:13,852 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 5671 transitions. Word has length 171 [2022-11-02 20:51:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:13,853 INFO L495 AbstractCegarLoop]: Abstraction has 4552 states and 5671 transitions. [2022-11-02 20:51:13,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.0476190476190474) internal successors, (254), 42 states have internal predecessors, (254), 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) [2022-11-02 20:51:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 5671 transitions. [2022-11-02 20:51:13,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:51:13,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:13,860 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:13,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-02 20:51:14,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:14,062 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash 58917745, now seen corresponding path program 1 times [2022-11-02 20:51:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:14,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699269866] [2022-11-02 20:51:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:14,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:14,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:14,065 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:14,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 20:51:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:14,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:51:14,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 59 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:15,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:15,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:15,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699269866] [2022-11-02 20:51:15,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699269866] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:15,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:51:15,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-02 20:51:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949084368] [2022-11-02 20:51:15,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:15,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:15,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:51:15,754 INFO L87 Difference]: Start difference. First operand 4552 states and 5671 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 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) [2022-11-02 20:51:16,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:16,301 INFO L93 Difference]: Finished difference Result 11670 states and 14588 transitions. [2022-11-02 20:51:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:51:16,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 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 171 [2022-11-02 20:51:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:16,308 INFO L225 Difference]: With dead ends: 11670 [2022-11-02 20:51:16,309 INFO L226 Difference]: Without dead ends: 9582 [2022-11-02 20:51:16,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:51:16,312 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 539 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:16,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 451 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:51:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9582 states. [2022-11-02 20:51:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9582 to 4572. [2022-11-02 20:51:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4571 states have (on average 1.245022970903522) internal successors, (5691), 4571 states have internal predecessors, (5691), 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) [2022-11-02 20:51:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 5691 transitions. [2022-11-02 20:51:16,685 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 5691 transitions. Word has length 171 [2022-11-02 20:51:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:16,685 INFO L495 AbstractCegarLoop]: Abstraction has 4572 states and 5691 transitions. [2022-11-02 20:51:16,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 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) [2022-11-02 20:51:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 5691 transitions. [2022-11-02 20:51:16,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 20:51:16,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:16,691 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:16,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:16,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:16,913 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:16,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:16,913 INFO L85 PathProgramCache]: Analyzing trace with hash -294170637, now seen corresponding path program 1 times [2022-11-02 20:51:16,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:16,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057798668] [2022-11-02 20:51:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:16,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:16,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:16,915 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:16,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae1bd6-d979-400f-b99a-eb36ddfb99d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 20:51:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:17,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 20:51:17,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-02 20:51:20,675 INFO L328 TraceCheckSpWp]: Computing backward predicates...