./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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 544bc30a09daedadbc71b7b1e61d9c7323ad28b5465f4ffee45b30f96e266ba6 --- 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 20:37:47,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:37:47,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:37:47,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:37:47,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:37:47,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:37:47,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:37:47,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:37:47,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:37:47,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:37:47,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:37:47,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:37:47,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:37:47,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:37:47,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:37:47,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:37:47,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:37:47,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:37:47,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:37:47,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:37:47,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:37:47,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:37:47,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:37:47,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:37:47,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:37:47,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:37:47,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:37:47,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:37:47,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:37:47,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:37:47,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:37:47,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:37:47,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:37:47,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:37:47,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:37:47,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:37:47,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:37:47,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:37:47,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:37:47,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:37:47,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:37:47,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:37:47,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:37:47,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:37:47,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:37:47,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:37:47,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:37:47,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:37:47,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:37:47,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:37:47,884 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:37:47,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:37:47,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:37:47,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:37:47,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:37:47,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:37:47,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:37:47,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:37:47,887 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:37:47,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:37:47,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:37:47,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:37:47,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:37:47,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:37:47,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:37:47,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:37:47,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:37:47,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:37:47,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:37:47,890 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:37:47,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:37:47,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:37:47,891 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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 544bc30a09daedadbc71b7b1e61d9c7323ad28b5465f4ffee45b30f96e266ba6 [2022-11-02 20:37:48,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:37:48,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:37:48,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:37:48,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:37:48,216 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:37:48,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c [2022-11-02 20:37:48,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data/53aa57fb4/a6181db71f594c3ab43c173dd5ba1682/FLAGda07edb65 [2022-11-02 20:37:48,978 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:37:48,979 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c [2022-11-02 20:37:49,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data/53aa57fb4/a6181db71f594c3ab43c173dd5ba1682/FLAGda07edb65 [2022-11-02 20:37:49,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data/53aa57fb4/a6181db71f594c3ab43c173dd5ba1682 [2022-11-02 20:37:49,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:37:49,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:37:49,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:37:49,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:37:49,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:37:49,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:37:49" (1/1) ... [2022-11-02 20:37:49,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c766228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:49, skipping insertion in model container [2022-11-02 20:37:49,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:37:49" (1/1) ... [2022-11-02 20:37:49,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:37:49,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:37:49,575 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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c[1014,1027] [2022-11-02 20:37:50,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:37:50,103 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:37:50,116 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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c[1014,1027] [2022-11-02 20:37:50,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:37:50,285 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:37:50,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50 WrapperNode [2022-11-02 20:37:50,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:37:50,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:37:50,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:37:50,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:37:50,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,609 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2325 [2022-11-02 20:37:50,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:37:50,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:37:50,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:37:50,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:37:50,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:50,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:51,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:37:51,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:37:51,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:37:51,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:37:51,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (1/1) ... [2022-11-02 20:37:51,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:37:51,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:51,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:37:51,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:37:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:37:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:37:51,643 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:37:51,645 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:38:36,185 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:38:36,196 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:38:36,196 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:38:36,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:36 BoogieIcfgContainer [2022-11-02 20:38:36,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:38:36,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:38:36,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:38:36,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:38:36,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:37:49" (1/3) ... [2022-11-02 20:38:36,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d028068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:36, skipping insertion in model container [2022-11-02 20:38:36,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:50" (2/3) ... [2022-11-02 20:38:36,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d028068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:36, skipping insertion in model container [2022-11-02 20:38:36,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:36" (3/3) ... [2022-11-02 20:38:36,222 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.5.prop1-func-interl.c [2022-11-02 20:38:36,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:38:36,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:38:36,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:38:36,324 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;@54d5983, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:38:36,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:38:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.4965517241379311) internal successors, (217), 146 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:38:36,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:36,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:36,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1165686489, now seen corresponding path program 1 times [2022-11-02 20:38:36,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:36,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779961439] [2022-11-02 20:38:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:36,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:37,457 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 20:38:37,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:37,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779961439] [2022-11-02 20:38:37,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779961439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:37,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:37,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:38:37,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088933672] [2022-11-02 20:38:37,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:37,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:37,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:38:37,520 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.4965517241379311) internal successors, (217), 146 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:38:40,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:42,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:42,342 INFO L93 Difference]: Finished difference Result 429 states and 641 transitions. [2022-11-02 20:38:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:42,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:38:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:42,370 INFO L225 Difference]: With dead ends: 429 [2022-11-02 20:38:42,370 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 20:38:42,374 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 20:38:42,378 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 413 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:42,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 618 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-02 20:38:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 20:38:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 145. [2022-11-02 20:38:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4791666666666667) internal successors, (213), 144 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 20:38:42,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 213 transitions. [2022-11-02 20:38:42,435 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 213 transitions. Word has length 13 [2022-11-02 20:38:42,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:42,435 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 213 transitions. [2022-11-02 20:38:42,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:38:42,436 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 213 transitions. [2022-11-02 20:38:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:38:42,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:42,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:42,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:42,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash 772659479, now seen corresponding path program 1 times [2022-11-02 20:38:42,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:42,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707108268] [2022-11-02 20:38:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:42,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,843 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 20:38:42,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:42,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707108268] [2022-11-02 20:38:42,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707108268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:42,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:42,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:38:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078789372] [2022-11-02 20:38:42,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:42,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:42,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:42,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:38:42,849 INFO L87 Difference]: Start difference. First operand 145 states and 213 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:38:45,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:48,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:48,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:48,230 INFO L93 Difference]: Finished difference Result 425 states and 628 transitions. [2022-11-02 20:38:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:38:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:48,239 INFO L225 Difference]: With dead ends: 425 [2022-11-02 20:38:48,240 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 20:38:48,241 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 20:38:48,242 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 407 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:48,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 618 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 20:38:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 20:38:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 147. [2022-11-02 20:38:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4726027397260273) internal successors, (215), 146 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 20:38:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 215 transitions. [2022-11-02 20:38:48,258 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 215 transitions. Word has length 13 [2022-11-02 20:38:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:48,259 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 215 transitions. [2022-11-02 20:38:48,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:38:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 215 transitions. [2022-11-02 20:38:48,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:38:48,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:48,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:48,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:38:48,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash -36687147, now seen corresponding path program 1 times [2022-11-02 20:38:48,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:48,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410139785] [2022-11-02 20:38:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,714 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 20:38:48,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:48,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410139785] [2022-11-02 20:38:48,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410139785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:48,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:48,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:38:48,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566376496] [2022-11-02 20:38:48,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:48,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:48,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:38:48,731 INFO L87 Difference]: Start difference. First operand 147 states and 215 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:38:50,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:52,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:53,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:54,068 INFO L93 Difference]: Finished difference Result 425 states and 627 transitions. [2022-11-02 20:38:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:54,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:38:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:54,077 INFO L225 Difference]: With dead ends: 425 [2022-11-02 20:38:54,078 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 20:38:54,078 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 20:38:54,080 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 401 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:54,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 618 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 20:38:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 20:38:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 149. [2022-11-02 20:38:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.4662162162162162) internal successors, (217), 148 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 217 transitions. [2022-11-02 20:38:54,102 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 217 transitions. Word has length 13 [2022-11-02 20:38:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:54,109 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 217 transitions. [2022-11-02 20:38:54,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:38:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 217 transitions. [2022-11-02 20:38:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:38:54,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:54,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:54,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:38:54,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:54,111 INFO L85 PathProgramCache]: Analyzing trace with hash 20571155, now seen corresponding path program 1 times [2022-11-02 20:38:54,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:54,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427572747] [2022-11-02 20:38:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:54,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,412 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 20:38:54,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:54,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427572747] [2022-11-02 20:38:54,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427572747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:54,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:54,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:38:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207513597] [2022-11-02 20:38:54,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:54,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:54,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:38:54,415 INFO L87 Difference]: Start difference. First operand 149 states and 217 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:38:55,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:57,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:59,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:38:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:59,786 INFO L93 Difference]: Finished difference Result 425 states and 626 transitions. [2022-11-02 20:38:59,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:59,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:38:59,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:59,838 INFO L225 Difference]: With dead ends: 425 [2022-11-02 20:38:59,838 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 20:38:59,839 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 20:38:59,840 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 395 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:59,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 620 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 20:38:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 20:38:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 151. [2022-11-02 20:38:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.46) internal successors, (219), 150 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 20:38:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2022-11-02 20:38:59,860 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 13 [2022-11-02 20:38:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:59,861 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2022-11-02 20:38:59,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:38:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2022-11-02 20:38:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:38:59,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:59,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:59,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:38:59,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash 20630737, now seen corresponding path program 1 times [2022-11-02 20:38:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:59,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829269113] [2022-11-02 20:38:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:00,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:00,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:00,454 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:00,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:39:00,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:39:00,461 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:39:00,467 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:39:00,548 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:39:00,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:39:00 BoogieIcfgContainer [2022-11-02 20:39:00,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:39:00,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:39:00,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:39:00,612 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:39:00,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:36" (3/4) ... [2022-11-02 20:39:00,617 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:39:00,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:39:00,619 INFO L158 Benchmark]: Toolchain (without parser) took 71453.12ms. Allocated memory was 127.9MB in the beginning and 1.0GB in the end (delta: 903.9MB). Free memory was 88.3MB in the beginning and 650.8MB in the end (delta: -562.5MB). Peak memory consumption was 342.2MB. Max. memory is 16.1GB. [2022-11-02 20:39:00,619 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 52.0MB in the beginning and 52.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:00,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1119.91ms. Allocated memory is still 127.9MB. Free memory was 88.1MB in the beginning and 48.1MB in the end (delta: 40.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-02 20:39:00,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 322.35ms. Allocated memory is still 127.9MB. Free memory was 48.1MB in the beginning and 53.7MB in the end (delta: -5.6MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2022-11-02 20:39:00,622 INFO L158 Benchmark]: Boogie Preprocessor took 400.43ms. Allocated memory was 127.9MB in the beginning and 211.8MB in the end (delta: 83.9MB). Free memory was 53.7MB in the beginning and 144.2MB in the end (delta: -90.5MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2022-11-02 20:39:00,622 INFO L158 Benchmark]: RCFGBuilder took 45187.79ms. Allocated memory was 211.8MB in the beginning and 1.0GB in the end (delta: 820.0MB). Free memory was 144.2MB in the beginning and 591.2MB in the end (delta: -447.0MB). Peak memory consumption was 632.8MB. Max. memory is 16.1GB. [2022-11-02 20:39:00,623 INFO L158 Benchmark]: TraceAbstraction took 24405.94ms. Allocated memory is still 1.0GB. Free memory was 591.2MB in the beginning and 650.8MB in the end (delta: -59.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:00,623 INFO L158 Benchmark]: Witness Printer took 6.33ms. Allocated memory is still 1.0GB. Free memory is still 650.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:00,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 52.0MB in the beginning and 52.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1119.91ms. Allocated memory is still 127.9MB. Free memory was 88.1MB in the beginning and 48.1MB in the end (delta: 40.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 322.35ms. Allocated memory is still 127.9MB. Free memory was 48.1MB in the beginning and 53.7MB in the end (delta: -5.6MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 400.43ms. Allocated memory was 127.9MB in the beginning and 211.8MB in the end (delta: 83.9MB). Free memory was 53.7MB in the beginning and 144.2MB in the end (delta: -90.5MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. * RCFGBuilder took 45187.79ms. Allocated memory was 211.8MB in the beginning and 1.0GB in the end (delta: 820.0MB). Free memory was 144.2MB in the beginning and 591.2MB in the end (delta: -447.0MB). Peak memory consumption was 632.8MB. Max. memory is 16.1GB. * TraceAbstraction took 24405.94ms. Allocated memory is still 1.0GB. Free memory was 591.2MB in the beginning and 650.8MB in the end (delta: -59.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.33ms. Allocated memory is still 1.0GB. Free memory is still 650.8MB. There was no memory consumed. 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 277, overapproximation of bitwiseAnd at line 273. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_38 = 0; [L39] const SORT_4 var_81 = 1; [L40] const SORT_4 var_82 = 0; [L41] const SORT_2 var_94 = 0; [L42] const SORT_3 var_115 = 0; [L43] const SORT_2 var_120 = 3; [L44] const SORT_2 var_126 = 2; [L45] const SORT_2 var_132 = 1; [L46] const SORT_4 var_156 = 2; [L47] const SORT_4 var_170 = 3; [L48] const SORT_4 var_313 = 4; [L49] const SORT_2 var_338 = 4; [L51] SORT_1 input_93; [L52] SORT_1 input_95; [L53] SORT_1 input_99; [L54] SORT_1 input_100; [L55] SORT_1 input_104; [L56] SORT_1 input_105; [L57] SORT_1 input_109; [L58] SORT_1 input_110; [L59] SORT_1 input_114; [L60] SORT_1 input_121; [L61] SORT_1 input_127; [L62] SORT_1 input_133; [L63] SORT_1 input_184; [L64] SORT_1 input_187; [L65] SORT_1 input_191; [L66] SORT_1 input_198; [L67] SORT_1 input_201; [L68] SORT_1 input_205; [L69] SORT_1 input_212; [L70] SORT_1 input_215; [L71] SORT_1 input_219; [L72] SORT_1 input_226; [L73] SORT_1 input_229; [L74] SORT_1 input_233; [L75] SORT_1 input_243; [L76] SORT_1 input_261; [L77] SORT_1 input_279; [L78] SORT_1 input_297; [L80] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L87] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L88] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L89] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L90] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L91] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L92] SORT_2 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_2 init_7_arg_1 = var_5; [L119] state_6 = init_7_arg_1 [L120] SORT_2 init_9_arg_1 = var_5; [L121] state_8 = init_9_arg_1 [L122] SORT_2 init_11_arg_1 = var_5; [L123] state_10 = init_11_arg_1 [L124] SORT_2 init_13_arg_1 = var_5; [L125] state_12 = init_13_arg_1 [L126] SORT_2 init_15_arg_1 = var_5; [L127] state_14 = init_15_arg_1 [L128] SORT_2 init_17_arg_1 = var_5; [L129] state_16 = init_17_arg_1 [L130] SORT_2 init_19_arg_1 = var_5; [L131] state_18 = init_19_arg_1 [L132] SORT_2 init_21_arg_1 = var_5; [L133] state_20 = init_21_arg_1 [L134] SORT_2 init_23_arg_1 = var_5; [L135] state_22 = init_23_arg_1 [L136] SORT_2 init_25_arg_1 = var_5; [L137] state_24 = init_25_arg_1 [L138] SORT_2 init_27_arg_1 = var_5; [L139] state_26 = init_27_arg_1 [L140] SORT_2 init_29_arg_1 = var_5; [L141] state_28 = init_29_arg_1 [L142] SORT_2 init_31_arg_1 = var_5; [L143] state_30 = init_31_arg_1 [L144] SORT_2 init_33_arg_1 = var_5; [L145] state_32 = init_33_arg_1 [L146] SORT_2 init_35_arg_1 = var_5; [L147] state_34 = init_35_arg_1 [L148] SORT_2 init_37_arg_1 = var_5; [L149] state_36 = init_37_arg_1 [L150] SORT_1 init_40_arg_1 = var_38; [L151] state_39 = init_40_arg_1 [L152] SORT_1 init_42_arg_1 = var_38; [L153] state_41 = init_42_arg_1 [L154] SORT_1 init_44_arg_1 = var_38; [L155] state_43 = init_44_arg_1 [L156] SORT_1 init_46_arg_1 = var_38; [L157] state_45 = init_46_arg_1 [L158] SORT_1 init_48_arg_1 = var_38; [L159] state_47 = init_48_arg_1 [L160] SORT_1 init_50_arg_1 = var_38; [L161] state_49 = init_50_arg_1 [L162] SORT_1 init_52_arg_1 = var_38; [L163] state_51 = init_52_arg_1 [L164] SORT_1 init_54_arg_1 = var_38; [L165] state_53 = init_54_arg_1 [L166] SORT_1 init_56_arg_1 = var_38; [L167] state_55 = init_56_arg_1 [L168] SORT_1 init_58_arg_1 = var_38; [L169] state_57 = init_58_arg_1 [L170] SORT_1 init_60_arg_1 = var_38; [L171] state_59 = init_60_arg_1 [L172] SORT_1 init_62_arg_1 = var_38; [L173] state_61 = init_62_arg_1 [L174] SORT_1 init_64_arg_1 = var_38; [L175] state_63 = init_64_arg_1 [L176] SORT_1 init_66_arg_1 = var_38; [L177] state_65 = init_66_arg_1 [L178] SORT_1 init_68_arg_1 = var_38; [L179] state_67 = init_68_arg_1 [L180] SORT_1 init_70_arg_1 = var_38; [L181] state_69 = init_70_arg_1 [L182] SORT_1 init_72_arg_1 = var_38; [L183] state_71 = init_72_arg_1 [L184] SORT_1 init_74_arg_1 = var_38; [L185] state_73 = init_74_arg_1 [L186] SORT_1 init_76_arg_1 = var_38; [L187] state_75 = init_76_arg_1 [L188] SORT_1 init_78_arg_1 = var_38; [L189] state_77 = init_78_arg_1 [L190] SORT_1 init_80_arg_1 = var_38; [L191] state_79 = init_80_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_94=0] [L194] input_93 = __VERIFIER_nondet_uchar() [L195] input_93 = input_93 & mask_SORT_1 [L196] input_95 = __VERIFIER_nondet_uchar() [L197] input_95 = input_95 & mask_SORT_1 [L198] input_99 = __VERIFIER_nondet_uchar() [L199] input_99 = input_99 & mask_SORT_1 [L200] input_100 = __VERIFIER_nondet_uchar() [L201] input_100 = input_100 & mask_SORT_1 [L202] input_104 = __VERIFIER_nondet_uchar() [L203] input_104 = input_104 & mask_SORT_1 [L204] input_105 = __VERIFIER_nondet_uchar() [L205] input_105 = input_105 & mask_SORT_1 [L206] input_109 = __VERIFIER_nondet_uchar() [L207] input_109 = input_109 & mask_SORT_1 [L208] input_110 = __VERIFIER_nondet_uchar() [L209] input_110 = input_110 & mask_SORT_1 [L210] input_114 = __VERIFIER_nondet_uchar() [L211] input_114 = input_114 & mask_SORT_1 [L212] input_121 = __VERIFIER_nondet_uchar() [L213] input_121 = input_121 & mask_SORT_1 [L214] input_127 = __VERIFIER_nondet_uchar() [L215] input_127 = input_127 & mask_SORT_1 [L216] input_133 = __VERIFIER_nondet_uchar() [L217] input_133 = input_133 & mask_SORT_1 [L218] input_184 = __VERIFIER_nondet_uchar() [L219] input_184 = input_184 & mask_SORT_1 [L220] input_187 = __VERIFIER_nondet_uchar() [L221] input_187 = input_187 & mask_SORT_1 [L222] input_191 = __VERIFIER_nondet_uchar() [L223] input_191 = input_191 & mask_SORT_1 [L224] input_198 = __VERIFIER_nondet_uchar() [L225] input_198 = input_198 & mask_SORT_1 [L226] input_201 = __VERIFIER_nondet_uchar() [L227] input_201 = input_201 & mask_SORT_1 [L228] input_205 = __VERIFIER_nondet_uchar() [L229] input_205 = input_205 & mask_SORT_1 [L230] input_212 = __VERIFIER_nondet_uchar() [L231] input_212 = input_212 & mask_SORT_1 [L232] input_215 = __VERIFIER_nondet_uchar() [L233] input_215 = input_215 & mask_SORT_1 [L234] input_219 = __VERIFIER_nondet_uchar() [L235] input_219 = input_219 & mask_SORT_1 [L236] input_226 = __VERIFIER_nondet_uchar() [L237] input_226 = input_226 & mask_SORT_1 [L238] input_229 = __VERIFIER_nondet_uchar() [L239] input_229 = input_229 & mask_SORT_1 [L240] input_233 = __VERIFIER_nondet_uchar() [L241] input_233 = input_233 & mask_SORT_1 [L242] input_243 = __VERIFIER_nondet_uchar() [L243] input_261 = __VERIFIER_nondet_uchar() [L244] input_279 = __VERIFIER_nondet_uchar() [L245] input_297 = __VERIFIER_nondet_uchar() [L248] SORT_1 var_83_arg_0 = state_41; [L249] SORT_4 var_83_arg_1 = var_81; [L250] SORT_4 var_83_arg_2 = var_82; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_94=0] [L251] EXPR var_83_arg_0 ? var_83_arg_1 : var_83_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_83_arg_0=0, var_83_arg_0 ? var_83_arg_1 : var_83_arg_2=0, var_83_arg_1=1, var_83_arg_2=0, var_94=0] [L251] SORT_4 var_83 = var_83_arg_0 ? var_83_arg_1 : var_83_arg_2; [L252] SORT_1 var_84_arg_0 = state_51; [L253] SORT_4 var_84_arg_1 = var_81; [L254] SORT_4 var_84_arg_2 = var_82; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_94=0] [L255] EXPR var_84_arg_0 ? var_84_arg_1 : var_84_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84_arg_0=0, var_84_arg_0 ? var_84_arg_1 : var_84_arg_2=0, var_84_arg_1=1, var_84_arg_2=0, var_94=0] [L255] SORT_4 var_84 = var_84_arg_0 ? var_84_arg_1 : var_84_arg_2; [L256] SORT_4 var_85_arg_0 = var_83; [L257] SORT_4 var_85_arg_1 = var_84; [L258] SORT_4 var_85 = var_85_arg_0 + var_85_arg_1; [L259] SORT_1 var_86_arg_0 = state_61; [L260] SORT_4 var_86_arg_1 = var_81; [L261] SORT_4 var_86_arg_2 = var_82; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86_arg_0=0, var_86_arg_1=1, var_86_arg_2=0, var_94=0] [L262] EXPR var_86_arg_0 ? var_86_arg_1 : var_86_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86_arg_0=0, var_86_arg_0 ? var_86_arg_1 : var_86_arg_2=0, var_86_arg_1=1, var_86_arg_2=0, var_94=0] [L262] SORT_4 var_86 = var_86_arg_0 ? var_86_arg_1 : var_86_arg_2; [L263] SORT_4 var_87_arg_0 = var_85; [L264] SORT_4 var_87_arg_1 = var_86; [L265] SORT_4 var_87 = var_87_arg_0 + var_87_arg_1; [L266] SORT_1 var_88_arg_0 = state_71; [L267] SORT_4 var_88_arg_1 = var_81; [L268] SORT_4 var_88_arg_2 = var_82; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=0, var_86_arg_0=0, var_86_arg_1=1, var_86_arg_2=0, var_87=0, var_87_arg_0=0, var_87_arg_1=0, var_88_arg_0=0, var_88_arg_1=1, var_88_arg_2=0, var_94=0] [L269] EXPR var_88_arg_0 ? var_88_arg_1 : var_88_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_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_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=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_8=0, var_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=0, var_86_arg_0=0, var_86_arg_1=1, var_86_arg_2=0, var_87=0, var_87_arg_0=0, var_87_arg_1=0, var_88_arg_0=0, var_88_arg_0 ? var_88_arg_1 : var_88_arg_2=0, var_88_arg_1=1, var_88_arg_2=0, var_94=0] [L269] SORT_4 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L270] SORT_4 var_89_arg_0 = var_87; [L271] SORT_4 var_89_arg_1 = var_88; [L272] SORT_4 var_89 = var_89_arg_0 + var_89_arg_1; [L273] var_89 = var_89 & mask_SORT_4 [L274] SORT_4 var_90_arg_0 = var_89; [L275] SORT_4 var_90_arg_1 = var_81; [L276] SORT_1 var_90 = var_90_arg_0 <= var_90_arg_1; [L277] SORT_1 var_91_arg_0 = ~state_79; [L278] var_91_arg_0 = var_91_arg_0 & mask_SORT_1 [L279] SORT_1 var_91_arg_1 = ~var_90; [L280] var_91_arg_1 = var_91_arg_1 & mask_SORT_1 [L281] SORT_1 var_91 = var_91_arg_0 & var_91_arg_1; [L282] var_91 = var_91 & mask_SORT_1 [L283] SORT_1 bad_92_arg_0 = var_91; [L284] CALL __VERIFIER_assert(!(bad_92_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, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 1616 SdHoareTripleChecker+Valid, 20.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1616 mSDsluCounter, 2474 SdHoareTripleChecker+Invalid, 20.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1649 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 825 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=4, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 544 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 88 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 20:39:00,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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 544bc30a09daedadbc71b7b1e61d9c7323ad28b5465f4ffee45b30f96e266ba6 --- 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 20:39:03,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:39:03,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:39:03,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:39:03,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:39:03,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:39:03,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:39:03,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:39:03,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:39:03,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:39:03,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:39:03,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:39:03,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:39:03,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:39:03,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:39:03,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:39:03,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:39:03,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:39:03,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:39:03,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:39:03,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:39:03,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:39:03,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:39:03,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:39:03,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:39:03,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:39:03,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:39:03,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:39:03,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:39:03,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:39:03,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:39:03,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:39:03,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:39:03,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:39:03,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:39:03,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:39:03,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:39:03,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:39:03,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:39:03,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:39:03,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:39:03,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:39:03,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:39:03,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:39:03,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:39:03,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:39:03,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:39:03,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:39:03,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:39:03,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:39:03,380 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:39:03,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:39:03,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:39:03,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:39:03,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:39:03,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:39:03,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:39:03,383 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:39:03,383 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:39:03,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:39:03,384 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:39:03,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:39:03,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:39:03,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:39:03,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:39:03,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:03,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:39:03,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:39:03,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:39:03,386 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:39:03,387 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:39:03,387 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:39:03,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:39:03,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:39:03,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:39:03,388 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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 544bc30a09daedadbc71b7b1e61d9c7323ad28b5465f4ffee45b30f96e266ba6 [2022-11-02 20:39:03,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:39:03,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:39:03,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:39:03,833 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:39:03,835 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:39:03,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c [2022-11-02 20:39:03,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data/8d94eda02/3dbe354b9d19455d9ae0a0efc16569c5/FLAG484938edf [2022-11-02 20:39:04,683 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:39:04,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c [2022-11-02 20:39:04,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data/8d94eda02/3dbe354b9d19455d9ae0a0efc16569c5/FLAG484938edf [2022-11-02 20:39:04,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/data/8d94eda02/3dbe354b9d19455d9ae0a0efc16569c5 [2022-11-02 20:39:04,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:39:04,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:39:04,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:04,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:39:04,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:39:04,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:04" (1/1) ... [2022-11-02 20:39:04,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5faadf8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:04, skipping insertion in model container [2022-11-02 20:39:04,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:04" (1/1) ... [2022-11-02 20:39:04,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:39:04,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:05,136 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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c[1014,1027] [2022-11-02 20:39:05,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:05,618 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:05,630 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_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.5.prop1-func-interl.c[1014,1027] [2022-11-02 20:39:05,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:05,829 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:05,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05 WrapperNode [2022-11-02 20:39:05,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:05,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:05,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:05,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:05,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:05,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,014 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2325 [2022-11-02 20:39:06,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:06,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:06,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:06,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:06,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:06,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:06,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:06,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:06,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:06,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:06,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:06,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:06,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:06,968 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:06,970 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:08,858 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:08,871 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:08,871 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:39:08,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:08 BoogieIcfgContainer [2022-11-02 20:39:08,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:08,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:08,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:08,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:08,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:39:04" (1/3) ... [2022-11-02 20:39:08,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386d6e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:08, skipping insertion in model container [2022-11-02 20:39:08,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05" (2/3) ... [2022-11-02 20:39:08,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386d6e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:08, skipping insertion in model container [2022-11-02 20:39:08,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:08" (3/3) ... [2022-11-02 20:39:08,888 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.5.prop1-func-interl.c [2022-11-02 20:39:08,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:08,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:08,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:09,002 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;@2ca8c6e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:09,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:39:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.4965517241379311) internal successors, (217), 146 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:39:09,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:09,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:09,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1165686489, now seen corresponding path program 1 times [2022-11-02 20:39:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:09,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771779595] [2022-11-02 20:39:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:09,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:09,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:09,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:09,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:39:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:09,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:39:09,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:09,739 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 20:39:09,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:09,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:09,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771779595] [2022-11-02 20:39:09,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771779595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:09,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:09,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346164323] [2022-11-02 20:39:09,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:09,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:09,799 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.4965517241379311) internal successors, (217), 146 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:10,164 INFO L93 Difference]: Finished difference Result 569 states and 851 transitions. [2022-11-02 20:39:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:10,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:39:10,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:10,189 INFO L225 Difference]: With dead ends: 569 [2022-11-02 20:39:10,192 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 20:39:10,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 20:39:10,213 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 619 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:10,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 823 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:39:10,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 20:39:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 145. [2022-11-02 20:39:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4791666666666667) internal successors, (213), 144 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 20:39:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 213 transitions. [2022-11-02 20:39:10,311 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 213 transitions. Word has length 13 [2022-11-02 20:39:10,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:10,311 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 213 transitions. [2022-11-02 20:39:10,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:10,312 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 213 transitions. [2022-11-02 20:39:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:39:10,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:10,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:10,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:10,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:10,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash 772659479, now seen corresponding path program 1 times [2022-11-02 20:39:10,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:10,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576675482] [2022-11-02 20:39:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:10,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:10,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:10,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:10,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:39:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:11,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:39:11,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:11,071 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 20:39:11,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:11,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:11,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576675482] [2022-11-02 20:39:11,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576675482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:11,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:11,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428089129] [2022-11-02 20:39:11,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:11,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:11,076 INFO L87 Difference]: Start difference. First operand 145 states and 213 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:11,287 INFO L93 Difference]: Finished difference Result 565 states and 835 transitions. [2022-11-02 20:39:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:11,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:39:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:11,292 INFO L225 Difference]: With dead ends: 565 [2022-11-02 20:39:11,292 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 20:39:11,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 20:39:11,295 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 613 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:11,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 822 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:39:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 20:39:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 147. [2022-11-02 20:39:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4726027397260273) internal successors, (215), 146 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 20:39:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 215 transitions. [2022-11-02 20:39:11,322 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 215 transitions. Word has length 13 [2022-11-02 20:39:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:11,323 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 215 transitions. [2022-11-02 20:39:11,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 215 transitions. [2022-11-02 20:39:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:39:11,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:11,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:11,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:11,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:11,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:11,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash -36687147, now seen corresponding path program 1 times [2022-11-02 20:39:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:11,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470720845] [2022-11-02 20:39:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:11,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:11,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:11,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:11,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:39:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:11,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:39:12,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:12,035 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 20:39:12,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:12,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:12,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470720845] [2022-11-02 20:39:12,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470720845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:12,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:12,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135455677] [2022-11-02 20:39:12,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:12,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:12,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:12,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:12,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:12,039 INFO L87 Difference]: Start difference. First operand 147 states and 215 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:12,241 INFO L93 Difference]: Finished difference Result 565 states and 834 transitions. [2022-11-02 20:39:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:12,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:39:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:12,245 INFO L225 Difference]: With dead ends: 565 [2022-11-02 20:39:12,245 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 20:39:12,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 20:39:12,247 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 607 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:12,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 821 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:39:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 20:39:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 149. [2022-11-02 20:39:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.4662162162162162) internal successors, (217), 148 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 217 transitions. [2022-11-02 20:39:12,256 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 217 transitions. Word has length 13 [2022-11-02 20:39:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:12,256 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 217 transitions. [2022-11-02 20:39:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 217 transitions. [2022-11-02 20:39:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:39:12,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:12,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:12,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:12,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:12,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:12,472 INFO L85 PathProgramCache]: Analyzing trace with hash 20571155, now seen corresponding path program 1 times [2022-11-02 20:39:12,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:12,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590869019] [2022-11-02 20:39:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:12,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:12,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:12,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:12,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:39:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:39:12,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:12,983 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 20:39:12,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:12,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:12,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590869019] [2022-11-02 20:39:12,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590869019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:12,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:12,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:12,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099306817] [2022-11-02 20:39:12,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:12,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:12,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:12,987 INFO L87 Difference]: Start difference. First operand 149 states and 217 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:13,177 INFO L93 Difference]: Finished difference Result 565 states and 833 transitions. [2022-11-02 20:39:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:13,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:39:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:13,182 INFO L225 Difference]: With dead ends: 565 [2022-11-02 20:39:13,182 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 20:39:13,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 20:39:13,185 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 601 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:13,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 823 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:39:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 20:39:13,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 151. [2022-11-02 20:39:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.46) internal successors, (219), 150 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 20:39:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2022-11-02 20:39:13,194 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 13 [2022-11-02 20:39:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:13,194 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2022-11-02 20:39:13,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:13,195 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2022-11-02 20:39:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:39:13,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:13,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:13,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:13,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:13,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash 20630737, now seen corresponding path program 1 times [2022-11-02 20:39:13,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:13,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938099215] [2022-11-02 20:39:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:13,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:13,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:13,411 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:13,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:39:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:39:13,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:14,441 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 20:39:14,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:14,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:14,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938099215] [2022-11-02 20:39:14,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938099215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:14,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:14,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:39:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279588564] [2022-11-02 20:39:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:14,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:39:14,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:14,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:39:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:39:14,445 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:17,287 INFO L93 Difference]: Finished difference Result 749 states and 1099 transitions. [2022-11-02 20:39:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:39:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 20:39:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:17,291 INFO L225 Difference]: With dead ends: 749 [2022-11-02 20:39:17,291 INFO L226 Difference]: Without dead ends: 747 [2022-11-02 20:39:17,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:39:17,294 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2251 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:17,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2251 Valid, 2890 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:39:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-02 20:39:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 159. [2022-11-02 20:39:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.4556962025316456) internal successors, (230), 158 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 20:39:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 230 transitions. [2022-11-02 20:39:17,316 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 230 transitions. Word has length 13 [2022-11-02 20:39:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:17,316 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 230 transitions. [2022-11-02 20:39:17,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 20:39:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 230 transitions. [2022-11-02 20:39:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:17,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:17,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:17,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:17,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:17,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:17,541 INFO L85 PathProgramCache]: Analyzing trace with hash 154654075, now seen corresponding path program 1 times [2022-11-02 20:39:17,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653647354] [2022-11-02 20:39:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:17,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:17,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:17,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:17,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:39:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:39:18,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:19,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:19,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:19,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653647354] [2022-11-02 20:39:19,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653647354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:19,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:19,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:19,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492467060] [2022-11-02 20:39:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:19,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:19,431 INFO L87 Difference]: Start difference. First operand 159 states and 230 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:20,029 INFO L93 Difference]: Finished difference Result 587 states and 863 transitions. [2022-11-02 20:39:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:20,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:20,033 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:39:20,033 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 20:39:20,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 20:39:20,035 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 547 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:20,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 748 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:39:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 20:39:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 179. [2022-11-02 20:39:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.449438202247191) internal successors, (258), 178 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 20:39:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 258 transitions. [2022-11-02 20:39:20,047 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 258 transitions. Word has length 152 [2022-11-02 20:39:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:20,047 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 258 transitions. [2022-11-02 20:39:20,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2022-11-02 20:39:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:20,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:20,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:20,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:20,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:20,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:20,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:20,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1016487677, now seen corresponding path program 1 times [2022-11-02 20:39:20,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:20,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14589254] [2022-11-02 20:39:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:20,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:20,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:20,283 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:20,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:39:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:21,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:39:21,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:21,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:21,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:21,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14589254] [2022-11-02 20:39:21,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14589254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:21,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:21,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:21,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442062131] [2022-11-02 20:39:21,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:21,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:21,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:21,888 INFO L87 Difference]: Start difference. First operand 179 states and 258 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:22,518 INFO L93 Difference]: Finished difference Result 624 states and 914 transitions. [2022-11-02 20:39:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:22,522 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:39:22,522 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:39:22,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:39:22,524 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 788 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:22,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1150 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:39:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:39:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 181. [2022-11-02 20:39:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4444444444444444) internal successors, (260), 180 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 20:39:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2022-11-02 20:39:22,534 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 152 [2022-11-02 20:39:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:22,535 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2022-11-02 20:39:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2022-11-02 20:39:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:22,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:22,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:22,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:22,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:22,765 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1504534783, now seen corresponding path program 1 times [2022-11-02 20:39:22,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:22,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628025475] [2022-11-02 20:39:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:22,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:22,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:22,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:22,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:39:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:23,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:39:23,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:24,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:24,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:24,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628025475] [2022-11-02 20:39:24,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628025475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:24,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:24,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:24,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023059939] [2022-11-02 20:39:24,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:24,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:24,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:24,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:24,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:24,487 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:25,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:25,092 INFO L93 Difference]: Finished difference Result 624 states and 913 transitions. [2022-11-02 20:39:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:25,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:25,096 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:39:25,097 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:39:25,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:39:25,098 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 781 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:25,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1146 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:39:25,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:39:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 183. [2022-11-02 20:39:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.4395604395604396) internal successors, (262), 182 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 20:39:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 262 transitions. [2022-11-02 20:39:25,108 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 262 transitions. Word has length 152 [2022-11-02 20:39:25,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:25,109 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 262 transitions. [2022-11-02 20:39:25,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:25,109 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 262 transitions. [2022-11-02 20:39:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:25,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:25,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:25,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:25,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:25,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:25,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 222362497, now seen corresponding path program 1 times [2022-11-02 20:39:25,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:25,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725032952] [2022-11-02 20:39:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:25,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:25,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:25,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:25,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:39:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:39:26,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:27,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:27,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:27,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725032952] [2022-11-02 20:39:27,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725032952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:27,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:27,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:27,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192000190] [2022-11-02 20:39:27,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:27,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:27,141 INFO L87 Difference]: Start difference. First operand 183 states and 262 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:27,860 INFO L93 Difference]: Finished difference Result 624 states and 912 transitions. [2022-11-02 20:39:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:27,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:27,865 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:39:27,869 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:39:27,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:39:27,870 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 774 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:27,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1142 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:39:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:39:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 185. [2022-11-02 20:39:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.434782608695652) internal successors, (264), 184 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 20:39:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 264 transitions. [2022-11-02 20:39:27,888 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 264 transitions. Word has length 152 [2022-11-02 20:39:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:27,891 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 264 transitions. [2022-11-02 20:39:27,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 264 transitions. [2022-11-02 20:39:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:27,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:27,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:27,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:28,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:28,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1499640189, now seen corresponding path program 1 times [2022-11-02 20:39:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:28,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328081239] [2022-11-02 20:39:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:28,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:28,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:28,114 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:28,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:39:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:39:29,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:30,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:30,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:30,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328081239] [2022-11-02 20:39:30,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328081239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:30,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:30,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:30,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086157976] [2022-11-02 20:39:30,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:30,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:30,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:30,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:30,063 INFO L87 Difference]: Start difference. First operand 185 states and 264 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:31,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:31,010 INFO L93 Difference]: Finished difference Result 624 states and 911 transitions. [2022-11-02 20:39:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:31,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:31,014 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:39:31,014 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:39:31,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:39:31,016 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 766 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:31,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1091 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:39:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:39:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 187. [2022-11-02 20:39:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.4301075268817205) internal successors, (266), 186 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 20:39:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 266 transitions. [2022-11-02 20:39:31,032 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 266 transitions. Word has length 152 [2022-11-02 20:39:31,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:31,033 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 266 transitions. [2022-11-02 20:39:31,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:31,034 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 266 transitions. [2022-11-02 20:39:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:31,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:31,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:31,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:31,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:31,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:31,255 INFO L85 PathProgramCache]: Analyzing trace with hash 429292037, now seen corresponding path program 1 times [2022-11-02 20:39:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808971591] [2022-11-02 20:39:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:31,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:31,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:31,258 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:31,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:39:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:32,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:39:32,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:33,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:33,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:33,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808971591] [2022-11-02 20:39:33,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808971591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:33,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:33,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157399858] [2022-11-02 20:39:33,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:33,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:33,233 INFO L87 Difference]: Start difference. First operand 187 states and 266 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:34,341 INFO L93 Difference]: Finished difference Result 632 states and 922 transitions. [2022-11-02 20:39:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:39:34,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:34,346 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:39:34,346 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:39:34,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:39:34,348 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 971 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:34,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1483 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:39:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:39:34,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 191. [2022-11-02 20:39:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4263157894736842) internal successors, (271), 190 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 20:39:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 271 transitions. [2022-11-02 20:39:34,366 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 271 transitions. Word has length 152 [2022-11-02 20:39:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:34,366 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 271 transitions. [2022-11-02 20:39:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 271 transitions. [2022-11-02 20:39:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:34,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:34,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:34,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:34,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:34,592 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1218070905, now seen corresponding path program 1 times [2022-11-02 20:39:34,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:34,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521686210] [2022-11-02 20:39:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:34,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:34,599 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:34,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:39:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:35,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:39:35,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:36,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:36,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:36,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521686210] [2022-11-02 20:39:36,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521686210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:36,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:36,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205028228] [2022-11-02 20:39:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:36,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:36,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:36,572 INFO L87 Difference]: Start difference. First operand 191 states and 271 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:37,573 INFO L93 Difference]: Finished difference Result 632 states and 921 transitions. [2022-11-02 20:39:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:39:37,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:37,577 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:39:37,578 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:39:37,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:39:37,579 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 963 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:37,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1476 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:39:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:39:37,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 193. [2022-11-02 20:39:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.421875) internal successors, (273), 192 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 20:39:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 273 transitions. [2022-11-02 20:39:37,591 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 273 transitions. Word has length 152 [2022-11-02 20:39:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:37,591 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 273 transitions. [2022-11-02 20:39:37,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 273 transitions. [2022-11-02 20:39:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:37,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:37,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:37,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:37,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:37,796 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2038311817, now seen corresponding path program 1 times [2022-11-02 20:39:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:37,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347844400] [2022-11-02 20:39:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:37,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:37,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:37,802 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:37,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:39:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:39,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:39:39,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:39,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:39,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:39,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347844400] [2022-11-02 20:39:39,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347844400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:39,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:39,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:39,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632748634] [2022-11-02 20:39:39,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:39,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:39,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:39,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:39,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:39,921 INFO L87 Difference]: Start difference. First operand 193 states and 273 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:40,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:40,828 INFO L93 Difference]: Finished difference Result 624 states and 908 transitions. [2022-11-02 20:39:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:40,832 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:39:40,832 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:39:40,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:39:40,836 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 740 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:40,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1099 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:39:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:39:40,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 195. [2022-11-02 20:39:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4175257731958764) internal successors, (275), 194 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 20:39:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 275 transitions. [2022-11-02 20:39:40,850 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 275 transitions. Word has length 152 [2022-11-02 20:39:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:40,851 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 275 transitions. [2022-11-02 20:39:40,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 275 transitions. [2022-11-02 20:39:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:40,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:40,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:40,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:41,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:41,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash -103548661, now seen corresponding path program 1 times [2022-11-02 20:39:41,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:41,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568056301] [2022-11-02 20:39:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:41,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:41,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:41,072 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:41,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:39:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:42,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:39:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:43,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:43,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:43,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568056301] [2022-11-02 20:39:43,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568056301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:43,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:43,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:43,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809303290] [2022-11-02 20:39:43,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:43,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:43,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:43,234 INFO L87 Difference]: Start difference. First operand 195 states and 275 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:44,205 INFO L93 Difference]: Finished difference Result 640 states and 931 transitions. [2022-11-02 20:39:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:39:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:44,209 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:39:44,210 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:39:44,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:39:44,211 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 962 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:44,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1496 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:39:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:39:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 197. [2022-11-02 20:39:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.413265306122449) internal successors, (277), 196 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 20:39:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 277 transitions. [2022-11-02 20:39:44,224 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 277 transitions. Word has length 152 [2022-11-02 20:39:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:44,225 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 277 transitions. [2022-11-02 20:39:44,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 277 transitions. [2022-11-02 20:39:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:44,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:44,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:44,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 20:39:44,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:44,449 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:44,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:44,450 INFO L85 PathProgramCache]: Analyzing trace with hash 14892813, now seen corresponding path program 1 times [2022-11-02 20:39:44,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:44,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767991480] [2022-11-02 20:39:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:44,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:44,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:44,453 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:44,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:39:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:39:45,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:46,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:46,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:46,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767991480] [2022-11-02 20:39:46,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767991480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:46,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:46,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:46,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245747983] [2022-11-02 20:39:46,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:46,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:46,532 INFO L87 Difference]: Start difference. First operand 197 states and 277 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:47,500 INFO L93 Difference]: Finished difference Result 640 states and 930 transitions. [2022-11-02 20:39:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:39:47,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:47,504 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:39:47,504 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:39:47,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:39:47,505 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 954 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:47,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1489 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:39:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:39:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 199. [2022-11-02 20:39:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.4090909090909092) internal successors, (279), 198 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 20:39:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 279 transitions. [2022-11-02 20:39:47,518 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 279 transitions. Word has length 152 [2022-11-02 20:39:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:47,518 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 279 transitions. [2022-11-02 20:39:47,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 279 transitions. [2022-11-02 20:39:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:47,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:47,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:47,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:47,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2018501233, now seen corresponding path program 1 times [2022-11-02 20:39:47,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:47,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805445782] [2022-11-02 20:39:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:47,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:47,743 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:47,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:39:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:48,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:39:48,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:49,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:49,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:49,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805445782] [2022-11-02 20:39:49,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805445782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:49,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:49,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:49,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719195460] [2022-11-02 20:39:49,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:49,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:49,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:49,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:49,798 INFO L87 Difference]: Start difference. First operand 199 states and 279 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:50,721 INFO L93 Difference]: Finished difference Result 640 states and 929 transitions. [2022-11-02 20:39:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:39:50,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:50,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:50,725 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:39:50,725 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:39:50,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:39:50,727 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 946 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:50,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1482 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:39:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:39:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 201. [2022-11-02 20:39:50,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.405) internal successors, (281), 200 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 20:39:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 281 transitions. [2022-11-02 20:39:50,739 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 281 transitions. Word has length 152 [2022-11-02 20:39:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:50,740 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 281 transitions. [2022-11-02 20:39:50,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 281 transitions. [2022-11-02 20:39:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:50,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:50,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:50,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:50,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:50,956 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:50,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash 969323665, now seen corresponding path program 1 times [2022-11-02 20:39:50,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:50,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656583309] [2022-11-02 20:39:50,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:50,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:50,960 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:50,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:39:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:52,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:39:52,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:52,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:52,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:52,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656583309] [2022-11-02 20:39:52,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656583309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:52,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:52,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:52,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661314387] [2022-11-02 20:39:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:52,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:52,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:52,966 INFO L87 Difference]: Start difference. First operand 201 states and 281 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:53,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:53,864 INFO L93 Difference]: Finished difference Result 648 states and 940 transitions. [2022-11-02 20:39:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:39:53,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:53,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:53,869 INFO L225 Difference]: With dead ends: 648 [2022-11-02 20:39:53,869 INFO L226 Difference]: Without dead ends: 499 [2022-11-02 20:39:53,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:39:53,875 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 949 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:53,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1481 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:39:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-02 20:39:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 205. [2022-11-02 20:39:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.4019607843137254) internal successors, (286), 204 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 20:39:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 286 transitions. [2022-11-02 20:39:53,904 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 286 transitions. Word has length 152 [2022-11-02 20:39:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:53,904 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 286 transitions. [2022-11-02 20:39:53,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 286 transitions. [2022-11-02 20:39:53,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:53,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:53,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:53,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:54,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:54,122 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1724572525, now seen corresponding path program 1 times [2022-11-02 20:39:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:54,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666968344] [2022-11-02 20:39:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:54,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:54,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:54,126 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:54,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:39:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:55,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:39:55,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:56,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:56,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:56,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666968344] [2022-11-02 20:39:56,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666968344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:56,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:56,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11032155] [2022-11-02 20:39:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:56,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:56,113 INFO L87 Difference]: Start difference. First operand 205 states and 286 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:56,967 INFO L93 Difference]: Finished difference Result 648 states and 939 transitions. [2022-11-02 20:39:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:39:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:39:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:56,971 INFO L225 Difference]: With dead ends: 648 [2022-11-02 20:39:56,971 INFO L226 Difference]: Without dead ends: 499 [2022-11-02 20:39:56,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:39:56,973 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 941 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:56,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1474 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:39:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-02 20:39:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 207. [2022-11-02 20:39:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3980582524271845) internal successors, (288), 206 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 20:39:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2022-11-02 20:39:56,985 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 152 [2022-11-02 20:39:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:56,986 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2022-11-02 20:39:56,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:56,986 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2022-11-02 20:39:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:39:56,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:56,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:57,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:57,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:57,197 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:57,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:57,197 INFO L85 PathProgramCache]: Analyzing trace with hash -373187307, now seen corresponding path program 1 times [2022-11-02 20:39:57,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:57,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570329206] [2022-11-02 20:39:57,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:57,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:57,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:57,201 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:57,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:39:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:58,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:39:58,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:59,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:59,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:59,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570329206] [2022-11-02 20:39:59,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570329206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:59,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:59,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519154421] [2022-11-02 20:39:59,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:59,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:59,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:59,264 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:00,170 INFO L93 Difference]: Finished difference Result 648 states and 938 transitions. [2022-11-02 20:40:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:00,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:00,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:00,173 INFO L225 Difference]: With dead ends: 648 [2022-11-02 20:40:00,173 INFO L226 Difference]: Without dead ends: 499 [2022-11-02 20:40:00,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:00,174 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 933 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:00,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1467 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:40:00,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-02 20:40:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 209. [2022-11-02 20:40:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3942307692307692) internal successors, (290), 208 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 20:40:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 290 transitions. [2022-11-02 20:40:00,189 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 290 transitions. Word has length 152 [2022-11-02 20:40:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:00,189 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 290 transitions. [2022-11-02 20:40:00,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 290 transitions. [2022-11-02 20:40:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:00,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:00,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:00,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:00,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:00,408 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1256696297, now seen corresponding path program 1 times [2022-11-02 20:40:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:00,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28234726] [2022-11-02 20:40:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:00,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:00,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:00,412 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:00,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:40:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:01,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:40:01,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:01,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:01,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28234726] [2022-11-02 20:40:01,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28234726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:01,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:01,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:40:01,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615311871] [2022-11-02 20:40:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:01,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:40:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:40:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:40:01,951 INFO L87 Difference]: Start difference. First operand 209 states and 290 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:02,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:02,213 INFO L93 Difference]: Finished difference Result 587 states and 849 transitions. [2022-11-02 20:40:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:40:02,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:02,216 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:40:02,216 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 20:40:02,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 20:40:02,218 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 374 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:02,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 786 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:40:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 20:40:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 243. [2022-11-02 20:40:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4049586776859504) internal successors, (340), 242 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 20:40:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 340 transitions. [2022-11-02 20:40:02,232 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 340 transitions. Word has length 152 [2022-11-02 20:40:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:02,233 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 340 transitions. [2022-11-02 20:40:02,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 340 transitions. [2022-11-02 20:40:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:02,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:02,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:02,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:02,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:02,449 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash -695996519, now seen corresponding path program 1 times [2022-11-02 20:40:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:02,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834457263] [2022-11-02 20:40:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:02,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:02,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:02,455 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:02,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:40:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:40:03,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:04,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:04,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:04,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834457263] [2022-11-02 20:40:04,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834457263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:04,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:04,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862246173] [2022-11-02 20:40:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:04,056 INFO L87 Difference]: Start difference. First operand 243 states and 340 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:04,467 INFO L93 Difference]: Finished difference Result 688 states and 996 transitions. [2022-11-02 20:40:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:04,471 INFO L225 Difference]: With dead ends: 688 [2022-11-02 20:40:04,471 INFO L226 Difference]: Without dead ends: 539 [2022-11-02 20:40:04,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:40:04,472 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 712 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:04,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1173 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:40:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-11-02 20:40:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 245. [2022-11-02 20:40:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.401639344262295) internal successors, (342), 244 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 20:40:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 342 transitions. [2022-11-02 20:40:04,487 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 342 transitions. Word has length 152 [2022-11-02 20:40:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:04,488 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 342 transitions. [2022-11-02 20:40:04,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 342 transitions. [2022-11-02 20:40:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:04,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:04,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:04,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:04,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:04,705 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash 564920731, now seen corresponding path program 1 times [2022-11-02 20:40:04,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:04,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631226490] [2022-11-02 20:40:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:04,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:04,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:04,709 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:04,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:40:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:05,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:40:05,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:06,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:06,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:06,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631226490] [2022-11-02 20:40:06,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631226490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:06,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:06,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:40:06,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852508673] [2022-11-02 20:40:06,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:06,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:06,495 INFO L87 Difference]: Start difference. First operand 245 states and 342 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:07,062 INFO L93 Difference]: Finished difference Result 640 states and 923 transitions. [2022-11-02 20:40:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:07,068 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:40:07,068 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:40:07,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:07,070 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 813 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:07,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1369 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:40:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:40:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 249. [2022-11-02 20:40:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3991935483870968) internal successors, (347), 248 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 20:40:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 347 transitions. [2022-11-02 20:40:07,084 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 347 transitions. Word has length 152 [2022-11-02 20:40:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:07,085 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 347 transitions. [2022-11-02 20:40:07,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 347 transitions. [2022-11-02 20:40:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:07,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:07,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:07,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:07,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:07,301 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1008821405, now seen corresponding path program 1 times [2022-11-02 20:40:07,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:07,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059286499] [2022-11-02 20:40:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:07,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:07,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:07,306 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:07,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:40:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:08,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:40:08,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:09,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:09,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:09,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059286499] [2022-11-02 20:40:09,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059286499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:09,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:09,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:40:09,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59000638] [2022-11-02 20:40:09,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:09,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:09,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:09,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:09,061 INFO L87 Difference]: Start difference. First operand 249 states and 347 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:09,705 INFO L93 Difference]: Finished difference Result 632 states and 910 transitions. [2022-11-02 20:40:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:09,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:09,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:09,718 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:40:09,718 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:40:09,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:09,720 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 788 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:09,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1331 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:40:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:40:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 251. [2022-11-02 20:40:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.396) internal successors, (349), 250 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 20:40:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 349 transitions. [2022-11-02 20:40:09,736 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 349 transitions. Word has length 152 [2022-11-02 20:40:09,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:09,736 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 349 transitions. [2022-11-02 20:40:09,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 349 transitions. [2022-11-02 20:40:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:09,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:09,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:09,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:09,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:09,953 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1019764705, now seen corresponding path program 1 times [2022-11-02 20:40:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:09,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074447625] [2022-11-02 20:40:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:09,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:09,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:09,957 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:09,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:40:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:11,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:40:11,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:11,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:11,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:11,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074447625] [2022-11-02 20:40:11,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074447625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:11,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:11,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:40:11,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810098444] [2022-11-02 20:40:11,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:11,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:40:11,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:40:11,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:40:11,539 INFO L87 Difference]: Start difference. First operand 251 states and 349 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:11,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:11,833 INFO L93 Difference]: Finished difference Result 587 states and 845 transitions. [2022-11-02 20:40:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:40:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:11,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:11,837 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:40:11,837 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 20:40:11,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 20:40:11,839 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 340 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:11,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 782 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:40:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 20:40:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 255. [2022-11-02 20:40:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.3937007874015748) internal successors, (354), 254 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 20:40:11,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 354 transitions. [2022-11-02 20:40:11,853 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 354 transitions. Word has length 152 [2022-11-02 20:40:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:11,854 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 354 transitions. [2022-11-02 20:40:11,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 354 transitions. [2022-11-02 20:40:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:11,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:11,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:11,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:12,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:12,077 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1372853087, now seen corresponding path program 1 times [2022-11-02 20:40:12,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:12,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607136284] [2022-11-02 20:40:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:12,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:12,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:12,082 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:12,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:40:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:40:13,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:13,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:13,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607136284] [2022-11-02 20:40:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607136284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:13,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:13,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:13,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466575591] [2022-11-02 20:40:13,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:13,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:13,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:13,672 INFO L87 Difference]: Start difference. First operand 255 states and 354 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:14,030 INFO L93 Difference]: Finished difference Result 700 states and 1010 transitions. [2022-11-02 20:40:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:14,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:14,035 INFO L225 Difference]: With dead ends: 700 [2022-11-02 20:40:14,035 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:40:14,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:40:14,037 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 696 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:14,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1165 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:40:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:40:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 257. [2022-11-02 20:40:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.390625) internal successors, (356), 256 states have internal predecessors, (356), 0 states have call successors, (0), 0 states 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 20:40:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 356 transitions. [2022-11-02 20:40:14,053 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 356 transitions. Word has length 152 [2022-11-02 20:40:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:14,053 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 356 transitions. [2022-11-02 20:40:14,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 356 transitions. [2022-11-02 20:40:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:14,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:14,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:14,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:14,269 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -479366749, now seen corresponding path program 1 times [2022-11-02 20:40:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:14,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037275460] [2022-11-02 20:40:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:14,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:14,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:14,273 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:14,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:40:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:15,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:40:15,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:16,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:16,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:16,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037275460] [2022-11-02 20:40:16,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037275460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:16,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:16,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:40:16,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883247153] [2022-11-02 20:40:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:16,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:16,056 INFO L87 Difference]: Start difference. First operand 257 states and 356 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:16,611 INFO L93 Difference]: Finished difference Result 640 states and 919 transitions. [2022-11-02 20:40:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:16,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:16,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:16,614 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:40:16,614 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:40:16,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:16,615 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 771 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:16,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1329 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:40:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:40:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 261. [2022-11-02 20:40:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3884615384615384) internal successors, (361), 260 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 20:40:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 361 transitions. [2022-11-02 20:40:16,627 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 361 transitions. Word has length 152 [2022-11-02 20:40:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:16,628 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 361 transitions. [2022-11-02 20:40:16,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:16,628 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 361 transitions. [2022-11-02 20:40:16,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:16,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:16,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:16,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:16,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:16,830 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:16,831 INFO L85 PathProgramCache]: Analyzing trace with hash -55720027, now seen corresponding path program 1 times [2022-11-02 20:40:16,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:16,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928353194] [2022-11-02 20:40:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:16,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:16,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:16,835 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:16,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:40:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:17,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:40:17,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:18,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:18,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:18,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928353194] [2022-11-02 20:40:18,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928353194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:18,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:18,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:40:18,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048172526] [2022-11-02 20:40:18,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:18,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:18,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:18,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:18,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:18,502 INFO L87 Difference]: Start difference. First operand 261 states and 361 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:19,129 INFO L93 Difference]: Finished difference Result 632 states and 906 transitions. [2022-11-02 20:40:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:19,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:19,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:19,132 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:40:19,132 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:40:19,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:19,133 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 746 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:19,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1291 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:40:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:40:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 263. [2022-11-02 20:40:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3854961832061068) internal successors, (363), 262 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 20:40:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 363 transitions. [2022-11-02 20:40:19,147 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 363 transitions. Word has length 152 [2022-11-02 20:40:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:19,148 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 363 transitions. [2022-11-02 20:40:19,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 363 transitions. [2022-11-02 20:40:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:19,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:19,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:19,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:19,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:19,377 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:19,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1901087193, now seen corresponding path program 1 times [2022-11-02 20:40:19,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:19,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842200043] [2022-11-02 20:40:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:19,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:19,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:19,382 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:19,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:40:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:20,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:40:20,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:21,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:21,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842200043] [2022-11-02 20:40:21,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842200043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:21,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:21,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:21,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121062160] [2022-11-02 20:40:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:21,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:21,059 INFO L87 Difference]: Start difference. First operand 263 states and 363 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:21,503 INFO L93 Difference]: Finished difference Result 624 states and 893 transitions. [2022-11-02 20:40:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:21,506 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:40:21,506 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:40:21,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:40:21,507 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 538 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:21,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1019 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:40:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:40:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 265. [2022-11-02 20:40:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.3825757575757576) internal successors, (365), 264 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 20:40:21,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 365 transitions. [2022-11-02 20:40:21,522 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 365 transitions. Word has length 152 [2022-11-02 20:40:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:21,523 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 365 transitions. [2022-11-02 20:40:21,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 365 transitions. [2022-11-02 20:40:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:21,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:21,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:21,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:21,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:21,749 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:21,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:21,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1241555671, now seen corresponding path program 1 times [2022-11-02 20:40:21,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:21,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408144691] [2022-11-02 20:40:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:21,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:21,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:21,756 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:21,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:40:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:40:22,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:23,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:23,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408144691] [2022-11-02 20:40:23,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408144691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:23,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:23,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:23,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693073801] [2022-11-02 20:40:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:23,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:23,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:23,547 INFO L87 Difference]: Start difference. First operand 265 states and 365 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:23,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:23,886 INFO L93 Difference]: Finished difference Result 712 states and 1024 transitions. [2022-11-02 20:40:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:23,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:23,890 INFO L225 Difference]: With dead ends: 712 [2022-11-02 20:40:23,890 INFO L226 Difference]: Without dead ends: 563 [2022-11-02 20:40:23,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:40:23,891 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 681 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:23,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1163 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:40:23,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-02 20:40:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 269. [2022-11-02 20:40:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3805970149253732) internal successors, (370), 268 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 20:40:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 370 transitions. [2022-11-02 20:40:23,904 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 370 transitions. Word has length 152 [2022-11-02 20:40:23,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:23,905 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 370 transitions. [2022-11-02 20:40:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 370 transitions. [2022-11-02 20:40:23,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:23,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:23,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:23,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:24,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:24,129 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:24,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1313942229, now seen corresponding path program 1 times [2022-11-02 20:40:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:24,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706712100] [2022-11-02 20:40:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:24,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:24,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:24,134 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:24,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:40:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:25,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:40:25,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:25,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:25,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:25,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706712100] [2022-11-02 20:40:25,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706712100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:25,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:25,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:40:25,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012015801] [2022-11-02 20:40:25,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:25,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:25,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:25,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:25,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:25,925 INFO L87 Difference]: Start difference. First operand 269 states and 370 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:26,493 INFO L93 Difference]: Finished difference Result 640 states and 915 transitions. [2022-11-02 20:40:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:26,497 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:40:26,497 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:40:26,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:26,499 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 729 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:26,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1289 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:40:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:40:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 273. [2022-11-02 20:40:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3786764705882353) internal successors, (375), 272 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 20:40:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 375 transitions. [2022-11-02 20:40:26,515 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 375 transitions. Word has length 152 [2022-11-02 20:40:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:26,516 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 375 transitions. [2022-11-02 20:40:26,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 375 transitions. [2022-11-02 20:40:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:26,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:26,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:26,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:26,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:26,745 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:26,746 INFO L85 PathProgramCache]: Analyzing trace with hash 72261165, now seen corresponding path program 1 times [2022-11-02 20:40:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:26,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925460897] [2022-11-02 20:40:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:26,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:26,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:26,749 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:26,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:40:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:27,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:40:27,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:28,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:28,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:28,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925460897] [2022-11-02 20:40:28,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925460897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:28,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:28,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:40:28,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079751382] [2022-11-02 20:40:28,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:28,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:28,412 INFO L87 Difference]: Start difference. First operand 273 states and 375 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:29,021 INFO L93 Difference]: Finished difference Result 632 states and 902 transitions. [2022-11-02 20:40:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:29,024 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:40:29,024 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:40:29,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:29,026 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 704 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:29,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1251 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:40:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:40:29,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 275. [2022-11-02 20:40:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.3759124087591241) internal successors, (377), 274 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 20:40:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 377 transitions. [2022-11-02 20:40:29,041 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 377 transitions. Word has length 152 [2022-11-02 20:40:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:29,042 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 377 transitions. [2022-11-02 20:40:29,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 377 transitions. [2022-11-02 20:40:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:29,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:29,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:29,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:29,269 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1995489199, now seen corresponding path program 1 times [2022-11-02 20:40:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:29,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443544402] [2022-11-02 20:40:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:29,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:29,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:29,272 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:29,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:40:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:30,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:40:30,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:30,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:30,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:30,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443544402] [2022-11-02 20:40:30,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443544402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:30,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:30,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:30,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060457887] [2022-11-02 20:40:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:30,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:30,928 INFO L87 Difference]: Start difference. First operand 275 states and 377 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:31,357 INFO L93 Difference]: Finished difference Result 624 states and 889 transitions. [2022-11-02 20:40:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:31,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:31,361 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:40:31,361 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:40:31,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:40:31,362 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 500 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:31,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 997 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:40:31,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:40:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 277. [2022-11-02 20:40:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.3731884057971016) internal successors, (379), 276 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 20:40:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 379 transitions. [2022-11-02 20:40:31,377 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 379 transitions. Word has length 152 [2022-11-02 20:40:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:31,378 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 379 transitions. [2022-11-02 20:40:31,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 379 transitions. [2022-11-02 20:40:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:31,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:31,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:31,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:31,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:31,593 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:31,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2136037809, now seen corresponding path program 1 times [2022-11-02 20:40:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:31,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97924244] [2022-11-02 20:40:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:31,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:31,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:31,597 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:31,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:40:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:32,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:40:32,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:33,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:33,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:33,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97924244] [2022-11-02 20:40:33,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97924244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:33,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:33,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:40:33,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056731536] [2022-11-02 20:40:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:33,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:40:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:40:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:40:33,274 INFO L87 Difference]: Start difference. First operand 277 states and 379 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:33,538 INFO L93 Difference]: Finished difference Result 587 states and 836 transitions. [2022-11-02 20:40:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:40:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:33,541 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:40:33,541 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 20:40:33,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 20:40:33,542 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 270 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:33,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 772 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:40:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 20:40:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 279. [2022-11-02 20:40:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.370503597122302) internal successors, (381), 278 states have internal predecessors, (381), 0 states have call successors, (0), 0 states 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 20:40:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 381 transitions. [2022-11-02 20:40:33,553 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 381 transitions. Word has length 152 [2022-11-02 20:40:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:33,553 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 381 transitions. [2022-11-02 20:40:33,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 381 transitions. [2022-11-02 20:40:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:33,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:33,554 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:33,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:33,755 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 330599475, now seen corresponding path program 1 times [2022-11-02 20:40:33,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:33,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880062318] [2022-11-02 20:40:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:33,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:33,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:33,760 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:33,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:40:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:34,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:40:34,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:35,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:35,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:35,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880062318] [2022-11-02 20:40:35,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880062318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:35,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:35,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272900563] [2022-11-02 20:40:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:35,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:35,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:35,442 INFO L87 Difference]: Start difference. First operand 279 states and 381 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:35,815 INFO L93 Difference]: Finished difference Result 724 states and 1037 transitions. [2022-11-02 20:40:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:35,818 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:40:35,818 INFO L226 Difference]: Without dead ends: 575 [2022-11-02 20:40:35,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:40:35,820 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 661 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:35,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1156 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:40:35,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-02 20:40:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 281. [2022-11-02 20:40:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.3678571428571429) internal successors, (383), 280 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 20:40:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 383 transitions. [2022-11-02 20:40:35,836 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 383 transitions. Word has length 152 [2022-11-02 20:40:35,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:35,837 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 383 transitions. [2022-11-02 20:40:35,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 383 transitions. [2022-11-02 20:40:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:35,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:35,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:35,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:36,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:36,061 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash 753301301, now seen corresponding path program 1 times [2022-11-02 20:40:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:36,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954909179] [2022-11-02 20:40:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:36,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:36,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:36,065 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:36,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:40:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:37,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:40:37,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:37,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:37,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:37,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954909179] [2022-11-02 20:40:37,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954909179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:37,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:37,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:40:37,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826467918] [2022-11-02 20:40:37,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:37,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:37,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:37,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:37,773 INFO L87 Difference]: Start difference. First operand 281 states and 383 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:38,371 INFO L93 Difference]: Finished difference Result 632 states and 898 transitions. [2022-11-02 20:40:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:38,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:38,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:38,374 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:40:38,374 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:40:38,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:38,375 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 659 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:38,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1213 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:40:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:40:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 287. [2022-11-02 20:40:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.367132867132867) internal successors, (391), 286 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 20:40:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 391 transitions. [2022-11-02 20:40:38,387 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 391 transitions. Word has length 152 [2022-11-02 20:40:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:38,387 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 391 transitions. [2022-11-02 20:40:38,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 391 transitions. [2022-11-02 20:40:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:38,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:38,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:38,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:38,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:38,618 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:38,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:38,619 INFO L85 PathProgramCache]: Analyzing trace with hash -526562377, now seen corresponding path program 1 times [2022-11-02 20:40:38,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:38,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426088260] [2022-11-02 20:40:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:38,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:38,622 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:38,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:40:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:39,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:40:39,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:40,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:40,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:40,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426088260] [2022-11-02 20:40:40,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426088260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:40,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:40,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:40:40,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162263519] [2022-11-02 20:40:40,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:40,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:40,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:40,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:40,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:40:40,340 INFO L87 Difference]: Start difference. First operand 287 states and 391 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:40,777 INFO L93 Difference]: Finished difference Result 624 states and 885 transitions. [2022-11-02 20:40:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:40:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:40,784 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:40:40,784 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:40:40,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:40:40,801 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 460 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:40,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 977 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:40:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:40:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 289. [2022-11-02 20:40:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3645833333333333) internal successors, (393), 288 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 20:40:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 393 transitions. [2022-11-02 20:40:40,817 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 393 transitions. Word has length 152 [2022-11-02 20:40:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:40,817 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 393 transitions. [2022-11-02 20:40:40,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 393 transitions. [2022-11-02 20:40:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:40,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:40,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:40,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:41,036 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1113368391, now seen corresponding path program 1 times [2022-11-02 20:40:41,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:41,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179130865] [2022-11-02 20:40:41,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:41,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:41,040 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:41,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:40:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:42,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:40:42,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:43,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:44,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:44,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179130865] [2022-11-02 20:40:44,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179130865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:44,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:44,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:40:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923183003] [2022-11-02 20:40:44,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:44,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:40:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:40:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:40:44,782 INFO L87 Difference]: Start difference. First operand 289 states and 393 transitions. Second operand has 16 states, 16 states have (on average 18.375) internal successors, (294), 16 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 20:40:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:45,217 INFO L93 Difference]: Finished difference Result 598 states and 818 transitions. [2022-11-02 20:40:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:45,218 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.375) internal successors, (294), 16 states have internal predecessors, (294), 0 states have call successors, (0), 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 152 [2022-11-02 20:40:45,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:45,220 INFO L225 Difference]: With dead ends: 598 [2022-11-02 20:40:45,221 INFO L226 Difference]: Without dead ends: 449 [2022-11-02 20:40:45,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:40:45,222 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 498 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:45,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1785 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-11-02 20:40:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-02 20:40:45,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 416. [2022-11-02 20:40:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.3277108433734939) internal successors, (551), 415 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 20:40:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 551 transitions. [2022-11-02 20:40:45,246 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 551 transitions. Word has length 152 [2022-11-02 20:40:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:45,247 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 551 transitions. [2022-11-02 20:40:45,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.375) internal successors, (294), 16 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 20:40:45,250 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 551 transitions. [2022-11-02 20:40:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:45,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:45,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:45,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:45,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:45,465 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:45,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:45,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1506395401, now seen corresponding path program 1 times [2022-11-02 20:40:45,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:45,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564034443] [2022-11-02 20:40:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:45,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:45,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:45,470 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:45,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:40:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:46,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:40:46,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:48,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:49,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:49,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564034443] [2022-11-02 20:40:49,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564034443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:49,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:49,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:40:49,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630234567] [2022-11-02 20:40:49,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:49,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:40:49,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:40:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:40:49,162 INFO L87 Difference]: Start difference. First operand 416 states and 551 transitions. Second operand has 16 states, 16 states have (on average 18.5) internal successors, (296), 16 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 20:40:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:49,571 INFO L93 Difference]: Finished difference Result 840 states and 1117 transitions. [2022-11-02 20:40:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:49,573 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.5) internal successors, (296), 16 states have internal predecessors, (296), 0 states have call successors, (0), 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 152 [2022-11-02 20:40:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:49,576 INFO L225 Difference]: With dead ends: 840 [2022-11-02 20:40:49,576 INFO L226 Difference]: Without dead ends: 691 [2022-11-02 20:40:49,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:40:49,578 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 475 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:49,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1818 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2022-11-02 20:40:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-02 20:40:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 666. [2022-11-02 20:40:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.2932330827067668) internal successors, (860), 665 states have internal predecessors, (860), 0 states have call successors, (0), 0 states 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 20:40:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 860 transitions. [2022-11-02 20:40:49,624 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 860 transitions. Word has length 152 [2022-11-02 20:40:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:49,625 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 860 transitions. [2022-11-02 20:40:49,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.5) internal successors, (296), 16 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 20:40:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 860 transitions. [2022-11-02 20:40:49,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:49,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:49,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:49,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:49,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:49,853 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:49,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1979225269, now seen corresponding path program 1 times [2022-11-02 20:40:49,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:49,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244853206] [2022-11-02 20:40:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:49,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:49,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:49,858 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:49,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:40:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:51,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:40:51,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:52,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:53,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:53,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244853206] [2022-11-02 20:40:53,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244853206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:53,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:53,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:40:53,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769945939] [2022-11-02 20:40:53,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:40:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:40:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:40:53,210 INFO L87 Difference]: Start difference. First operand 666 states and 860 transitions. Second operand has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 20:40:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:53,501 INFO L93 Difference]: Finished difference Result 1353 states and 1751 transitions. [2022-11-02 20:40:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:40:53,502 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 0 states have call successors, (0), 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 152 [2022-11-02 20:40:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:53,509 INFO L225 Difference]: With dead ends: 1353 [2022-11-02 20:40:53,509 INFO L226 Difference]: Without dead ends: 1204 [2022-11-02 20:40:53,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:40:53,511 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 663 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:53,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1606 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2022-11-02 20:40:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-11-02 20:40:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1154. [2022-11-02 20:40:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.2662619254119687) internal successors, (1460), 1153 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 20:40:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1460 transitions. [2022-11-02 20:40:53,627 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1460 transitions. Word has length 152 [2022-11-02 20:40:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:53,627 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1460 transitions. [2022-11-02 20:40:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 20:40:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1460 transitions. [2022-11-02 20:40:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:53,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:53,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:53,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:53,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:53,845 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2036483571, now seen corresponding path program 1 times [2022-11-02 20:40:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:53,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476365925] [2022-11-02 20:40:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:53,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:53,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:53,850 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:53,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:40:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:54,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:40:54,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:56,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:57,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:57,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476365925] [2022-11-02 20:40:57,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476365925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:57,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:57,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:40:57,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534243387] [2022-11-02 20:40:57,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:57,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:40:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:57,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:40:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:40:57,089 INFO L87 Difference]: Start difference. First operand 1154 states and 1460 transitions. Second operand has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 20:40:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:57,395 INFO L93 Difference]: Finished difference Result 2274 states and 2871 transitions. [2022-11-02 20:40:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 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 152 [2022-11-02 20:40:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:57,402 INFO L225 Difference]: With dead ends: 2274 [2022-11-02 20:40:57,402 INFO L226 Difference]: Without dead ends: 2125 [2022-11-02 20:40:57,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:40:57,403 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 477 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:57,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1612 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-11-02 20:40:57,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-11-02 20:40:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2102. [2022-11-02 20:40:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2101 states have (on average 1.2460732984293195) internal successors, (2618), 2101 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states 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 20:40:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2618 transitions. [2022-11-02 20:40:57,591 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2618 transitions. Word has length 152 [2022-11-02 20:40:57,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:57,592 INFO L495 AbstractCegarLoop]: Abstraction has 2102 states and 2618 transitions. [2022-11-02 20:40:57,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 20:40:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2618 transitions. [2022-11-02 20:40:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:40:57,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:57,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:57,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:57,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:57,825 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1329886965, now seen corresponding path program 1 times [2022-11-02 20:40:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:57,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102922512] [2022-11-02 20:40:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:57,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:57,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:57,830 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:57,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:40:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:58,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:40:58,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:00,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:10,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:41:10,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102922512] [2022-11-02 20:41:10,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102922512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:10,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:10,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:41:10,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669259981] [2022-11-02 20:41:10,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:10,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:41:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:41:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:41:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=188, Unknown=3, NotChecked=0, Total=240 [2022-11-02 20:41:10,607 INFO L87 Difference]: Start difference. First operand 2102 states and 2618 transitions. Second operand has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 20:41:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:10,837 INFO L93 Difference]: Finished difference Result 3061 states and 3751 transitions. [2022-11-02 20:41:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:41:10,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 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 152 [2022-11-02 20:41:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:10,849 INFO L225 Difference]: With dead ends: 3061 [2022-11-02 20:41:10,849 INFO L226 Difference]: Without dead ends: 3059 [2022-11-02 20:41:10,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=49, Invalid=188, Unknown=3, NotChecked=0, Total=240 [2022-11-02 20:41:10,851 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 573 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:10,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 2924 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 78 Unchecked, 0.0s Time] [2022-11-02 20:41:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2022-11-02 20:41:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2889. [2022-11-02 20:41:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2888 states have (on average 1.2205678670360112) internal successors, (3525), 2888 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states 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 20:41:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 3525 transitions. [2022-11-02 20:41:11,101 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 3525 transitions. Word has length 152 [2022-11-02 20:41:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:11,102 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 3525 transitions. [2022-11-02 20:41:11,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 20:41:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 3525 transitions. [2022-11-02 20:41:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:41:11,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:11,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:11,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:11,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:41:11,337 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1003505673, now seen corresponding path program 1 times [2022-11-02 20:41:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:41:11,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395305077] [2022-11-02 20:41:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:11,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:41:11,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:41:11,340 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:41:11,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd01c5b-b4cd-4376-a2c8-4fe18a666d07/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:41:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:12,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:41:12,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:14,529 INFO L328 TraceCheckSpWp]: Computing backward predicates...