./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aec3d6b735697765f122fd4969787ab3e5c22f1789977e4ce823d6b216b50af2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:02:49,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:02:49,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:02:49,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:02:49,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:02:49,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:02:49,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:02:49,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:02:49,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:02:49,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:02:49,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:02:49,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:02:49,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:02:49,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:02:49,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:02:49,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:02:49,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:02:49,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:02:49,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:02:49,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:02:49,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:02:49,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:02:49,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:02:49,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:02:49,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:02:49,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:02:49,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:02:49,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:02:49,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:02:49,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:02:49,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:02:49,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:02:49,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:02:49,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:02:49,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:02:49,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:02:49,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:02:49,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:02:49,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:02:49,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:02:49,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:02:49,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:02:49,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:02:49,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:02:49,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:02:49,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:02:49,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:02:49,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:02:49,728 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:02:49,729 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:02:49,729 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:02:49,729 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:02:49,729 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:02:49,730 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:02:49,730 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:02:49,730 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:02:49,731 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:02:49,731 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:02:49,731 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:02:49,731 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:02:49,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:02:49,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:02:49,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:02:49,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:02:49,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:02:49,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:02:49,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:02:49,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:02:49,734 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:02:49,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:02:49,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:02:49,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:02:49,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:02:49,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:02:49,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:49,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:02:49,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:02:49,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:02:49,737 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:02:49,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:02:49,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:02:49,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:02:49,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:02:49,739 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aec3d6b735697765f122fd4969787ab3e5c22f1789977e4ce823d6b216b50af2 [2021-11-23 17:02:50,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:02:50,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:02:50,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:02:50,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:02:50,032 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:02:50,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2012/Problem14_label33.c [2021-11-23 17:02:50,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data/187dd73b6/81b757c0987b4e5ba626619c64ca25ab/FLAGe9b57e923 [2021-11-23 17:02:50,749 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:02:50,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/sv-benchmarks/c/eca-rers2012/Problem14_label33.c [2021-11-23 17:02:50,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data/187dd73b6/81b757c0987b4e5ba626619c64ca25ab/FLAGe9b57e923 [2021-11-23 17:02:50,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data/187dd73b6/81b757c0987b4e5ba626619c64ca25ab [2021-11-23 17:02:50,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:02:50,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:02:50,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:50,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:02:50,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:02:50,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:50" (1/1) ... [2021-11-23 17:02:50,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be1501b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:50, skipping insertion in model container [2021-11-23 17:02:50,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:50" (1/1) ... [2021-11-23 17:02:50,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:02:51,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:02:51,347 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_03450b94-eea7-46ec-aadd-af1052034740/sv-benchmarks/c/eca-rers2012/Problem14_label33.c[5937,5950] [2021-11-23 17:02:51,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:51,649 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:02:51,683 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_03450b94-eea7-46ec-aadd-af1052034740/sv-benchmarks/c/eca-rers2012/Problem14_label33.c[5937,5950] [2021-11-23 17:02:51,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:51,842 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:02:51,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51 WrapperNode [2021-11-23 17:02:51,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:51,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:51,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:02:51,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:02:51,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:51,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:51,967 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2021-11-23 17:02:51,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:51,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:02:51,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:02:51,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:02:51,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:51,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:51,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:51,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:52,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:52,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:52,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:52,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:02:52,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:02:52,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:02:52,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:02:52,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:51" (1/1) ... [2021-11-23 17:02:52,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:52,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:02:52,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:02:52,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:02:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:02:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:02:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:02:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:02:52,277 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:02:52,278 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:02:53,527 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:02:53,561 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:02:53,566 INFO L158 Benchmark]: Toolchain (without parser) took 2609.68ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 61.0MB in the beginning and 58.4MB in the end (delta: 2.6MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2021-11-23 17:02:53,566 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:02:53,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 886.75ms. Allocated memory is still 102.8MB. Free memory was 60.8MB in the beginning and 55.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-11-23 17:02:53,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 123.99ms. Allocated memory is still 102.8MB. Free memory was 55.1MB in the beginning and 45.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:02:53,569 INFO L158 Benchmark]: Boogie Preprocessor took 140.83ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 45.4MB in the beginning and 92.4MB in the end (delta: -46.9MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2021-11-23 17:02:53,570 INFO L158 Benchmark]: RCFGBuilder took 1452.52ms. Allocated memory is still 123.7MB. Free memory was 92.3MB in the beginning and 58.4MB in the end (delta: 33.8MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2021-11-23 17:02:53,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 886.75ms. Allocated memory is still 102.8MB. Free memory was 60.8MB in the beginning and 55.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 123.99ms. Allocated memory is still 102.8MB. Free memory was 55.1MB in the beginning and 45.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 140.83ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 45.4MB in the beginning and 92.4MB in the end (delta: -46.9MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1452.52ms. Allocated memory is still 123.7MB. Free memory was 92.3MB in the beginning and 58.4MB in the end (delta: 33.8MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:02:53,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aec3d6b735697765f122fd4969787ab3e5c22f1789977e4ce823d6b216b50af2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:02:56,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:02:56,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:02:56,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:02:56,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:02:56,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:02:56,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:02:56,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:02:56,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:02:56,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:02:56,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:02:56,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:02:56,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:02:56,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:02:56,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:02:56,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:02:56,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:02:56,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:02:56,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:02:56,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:02:56,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:02:56,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:02:56,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:02:56,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:02:56,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:02:56,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:02:56,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:02:56,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:02:56,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:02:56,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:02:56,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:02:56,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:02:56,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:02:56,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:02:56,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:02:56,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:02:56,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:02:56,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:02:56,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:02:56,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:02:56,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:02:56,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:02:56,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:02:56,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:02:56,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:02:56,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:02:56,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:02:56,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:02:56,349 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:02:56,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:02:56,350 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:02:56,350 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:02:56,350 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:02:56,350 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:02:56,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:02:56,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:02:56,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:02:56,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:02:56,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:02:56,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:02:56,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:02:56,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:02:56,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:02:56,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:02:56,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:02:56,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:02:56,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:02:56,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:02:56,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:02:56,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:02:56,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:02:56,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:56,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:02:56,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:02:56,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:02:56,358 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:02:56,359 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:02:56,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:02:56,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:02:56,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:02:56,360 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_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aec3d6b735697765f122fd4969787ab3e5c22f1789977e4ce823d6b216b50af2 [2021-11-23 17:02:56,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:02:56,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:02:56,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:02:56,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:02:56,747 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:02:56,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2012/Problem14_label33.c [2021-11-23 17:02:56,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data/835cac727/899334e58f7b4648a0c51d4d89fe6a15/FLAGe40d25903 [2021-11-23 17:02:57,594 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:02:57,594 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/sv-benchmarks/c/eca-rers2012/Problem14_label33.c [2021-11-23 17:02:57,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data/835cac727/899334e58f7b4648a0c51d4d89fe6a15/FLAGe40d25903 [2021-11-23 17:02:57,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/data/835cac727/899334e58f7b4648a0c51d4d89fe6a15 [2021-11-23 17:02:57,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:02:57,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:02:57,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:57,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:02:57,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:02:57,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:57" (1/1) ... [2021-11-23 17:02:57,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267bf356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:57, skipping insertion in model container [2021-11-23 17:02:57,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:57" (1/1) ... [2021-11-23 17:02:57,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:02:57,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:02:58,159 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_03450b94-eea7-46ec-aadd-af1052034740/sv-benchmarks/c/eca-rers2012/Problem14_label33.c[5937,5950] [2021-11-23 17:02:58,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:58,454 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:02:58,485 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_03450b94-eea7-46ec-aadd-af1052034740/sv-benchmarks/c/eca-rers2012/Problem14_label33.c[5937,5950] [2021-11-23 17:02:58,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:58,614 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:02:58,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58 WrapperNode [2021-11-23 17:02:58,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:58,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:58,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:02:58,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:02:58,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,721 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 856 [2021-11-23 17:02:58,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:58,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:02:58,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:02:58,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:02:58,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:02:58,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:02:58,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:02:58,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:02:58,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:58,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:58,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:02:58,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:02:58,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:02:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:02:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:02:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:02:58,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:02:59,075 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:02:59,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:03:02,512 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:03:02,526 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:03:02,527 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:03:02,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:03:02 BoogieIcfgContainer [2021-11-23 17:03:02,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:03:02,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:03:02,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:03:02,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:03:02,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:02:57" (1/3) ... [2021-11-23 17:03:02,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41770888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:03:02, skipping insertion in model container [2021-11-23 17:03:02,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (2/3) ... [2021-11-23 17:03:02,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41770888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:03:02, skipping insertion in model container [2021-11-23 17:03:02,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:03:02" (3/3) ... [2021-11-23 17:03:02,542 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label33.c [2021-11-23 17:03:02,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:03:02,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:03:02,628 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:03:02,635 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:03:02,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:03:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 17:03:02,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:03:02,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:03:02,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:03:02,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:03:02,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2074400678, now seen corresponding path program 1 times [2021-11-23 17:03:02,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:03:02,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286343501] [2021-11-23 17:03:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:03:02,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:03:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:03:02,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:03:02,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:03:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:03:02,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:03:02,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:03:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:03:03,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:03:03,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:03:03,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286343501] [2021-11-23 17:03:03,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286343501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:03:03,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:03:03,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:03:03,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187527083] [2021-11-23 17:03:03,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:03:03,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:03:03,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:03:03,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:03:03,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:03:03,179 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:03:06,904 INFO L93 Difference]: Finished difference Result 669 states and 1200 transitions. [2021-11-23 17:03:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:03:06,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-23 17:03:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:03:06,923 INFO L225 Difference]: With dead ends: 669 [2021-11-23 17:03:06,924 INFO L226 Difference]: Without dead ends: 360 [2021-11-23 17:03:06,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:03:06,935 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 137 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:03:06,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 131 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-23 17:03:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-23 17:03:07,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-11-23 17:03:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4874651810584958) internal successors, (534), 359 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 534 transitions. [2021-11-23 17:03:07,025 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 534 transitions. Word has length 58 [2021-11-23 17:03:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:03:07,027 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 534 transitions. [2021-11-23 17:03:07,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 534 transitions. [2021-11-23 17:03:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 17:03:07,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:03:07,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:03:07,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:03:07,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:03:07,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:03:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:03:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1923351856, now seen corresponding path program 1 times [2021-11-23 17:03:07,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:03:07,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819533090] [2021-11-23 17:03:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:03:07,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:03:07,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:03:07,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:03:07,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:03:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:03:07,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:03:07,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:03:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:03:07,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:03:07,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:03:07,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819533090] [2021-11-23 17:03:07,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819533090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:03:07,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:03:07,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:03:07,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847757248] [2021-11-23 17:03:07,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:03:07,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:03:07,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:03:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:03:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:03:07,758 INFO L87 Difference]: Start difference. First operand 360 states and 534 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:11,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:03:11,961 INFO L93 Difference]: Finished difference Result 1074 states and 1597 transitions. [2021-11-23 17:03:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:03:11,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-23 17:03:11,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:03:11,969 INFO L225 Difference]: With dead ends: 1074 [2021-11-23 17:03:11,969 INFO L226 Difference]: Without dead ends: 716 [2021-11-23 17:03:11,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:03:11,973 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:03:11,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 102 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 17:03:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-23 17:03:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-11-23 17:03:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.3454545454545455) internal successors, (962), 715 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 962 transitions. [2021-11-23 17:03:12,023 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 962 transitions. Word has length 123 [2021-11-23 17:03:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:03:12,024 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 962 transitions. [2021-11-23 17:03:12,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 962 transitions. [2021-11-23 17:03:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 17:03:12,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:03:12,029 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:03:12,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:03:12,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:03:12,243 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:03:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:03:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1810172772, now seen corresponding path program 1 times [2021-11-23 17:03:12,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:03:12,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265438844] [2021-11-23 17:03:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:03:12,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:03:12,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:03:12,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:03:12,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:03:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:03:12,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:03:12,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:03:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:03:12,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:03:12,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:03:12,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265438844] [2021-11-23 17:03:12,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265438844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:03:12,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:03:12,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:03:12,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304250755] [2021-11-23 17:03:12,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:03:12,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:03:12,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:03:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:03:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:03:12,719 INFO L87 Difference]: Start difference. First operand 716 states and 962 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:03:16,161 INFO L93 Difference]: Finished difference Result 1964 states and 2655 transitions. [2021-11-23 17:03:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:03:16,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-23 17:03:16,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:03:16,171 INFO L225 Difference]: With dead ends: 1964 [2021-11-23 17:03:16,171 INFO L226 Difference]: Without dead ends: 1250 [2021-11-23 17:03:16,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:03:16,175 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 129 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 17:03:16,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 89 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 17:03:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-11-23 17:03:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2021-11-23 17:03:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.245796637309848) internal successors, (1556), 1249 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1556 transitions. [2021-11-23 17:03:16,234 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1556 transitions. Word has length 126 [2021-11-23 17:03:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:03:16,235 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1556 transitions. [2021-11-23 17:03:16,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:16,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1556 transitions. [2021-11-23 17:03:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-23 17:03:16,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:03:16,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:03:16,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:03:16,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:03:16,454 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:03:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:03:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1355453434, now seen corresponding path program 1 times [2021-11-23 17:03:16,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:03:16,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665376330] [2021-11-23 17:03:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:03:16,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:03:16,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:03:16,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:03:16,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 17:03:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:03:16,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 17:03:16,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:03:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-23 17:03:17,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:03:17,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:03:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665376330] [2021-11-23 17:03:17,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665376330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:03:17,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:03:17,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:03:17,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182344397] [2021-11-23 17:03:17,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:03:17,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:03:17,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:03:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:03:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:03:18,000 INFO L87 Difference]: Start difference. First operand 1250 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:03:21,021 INFO L93 Difference]: Finished difference Result 2171 states and 2741 transitions. [2021-11-23 17:03:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:03:21,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 207 [2021-11-23 17:03:21,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:03:21,031 INFO L225 Difference]: With dead ends: 2171 [2021-11-23 17:03:21,032 INFO L226 Difference]: Without dead ends: 1072 [2021-11-23 17:03:21,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:03:21,046 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 112 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:03:21,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 113 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 17:03:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-23 17:03:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-11-23 17:03:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.239028944911298) internal successors, (1327), 1071 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1327 transitions. [2021-11-23 17:03:21,087 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1327 transitions. Word has length 207 [2021-11-23 17:03:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:03:21,089 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1327 transitions. [2021-11-23 17:03:21,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1327 transitions. [2021-11-23 17:03:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-23 17:03:21,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:03:21,095 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:03:21,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 17:03:21,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:03:21,308 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:03:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:03:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1381649723, now seen corresponding path program 1 times [2021-11-23 17:03:21,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:03:21,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20930681] [2021-11-23 17:03:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:03:21,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:03:21,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:03:21,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:03:21,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 17:03:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:03:21,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:03:21,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:03:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-23 17:03:23,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:03:23,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:03:23,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20930681] [2021-11-23 17:03:23,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20930681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:03:23,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:03:23,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:03:23,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312566242] [2021-11-23 17:03:23,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:03:23,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:03:23,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:03:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:03:23,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:03:23,176 INFO L87 Difference]: Start difference. First operand 1072 states and 1327 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:03:25,612 INFO L93 Difference]: Finished difference Result 1786 states and 2287 transitions. [2021-11-23 17:03:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:03:25,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 233 [2021-11-23 17:03:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:03:25,620 INFO L225 Difference]: With dead ends: 1786 [2021-11-23 17:03:25,621 INFO L226 Difference]: Without dead ends: 1072 [2021-11-23 17:03:25,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:03:25,623 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 17:03:25,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 123 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 17:03:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-23 17:03:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-11-23 17:03:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.2334267040149394) internal successors, (1321), 1071 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1321 transitions. [2021-11-23 17:03:25,661 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1321 transitions. Word has length 233 [2021-11-23 17:03:25,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:03:25,662 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1321 transitions. [2021-11-23 17:03:25,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1321 transitions. [2021-11-23 17:03:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-23 17:03:25,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:03:25,671 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:03:25,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 17:03:25,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:03:25,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:03:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:03:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1669559147, now seen corresponding path program 1 times [2021-11-23 17:03:25,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:03:25,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178293547] [2021-11-23 17:03:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:03:25,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:03:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:03:25,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:03:25,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 17:03:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:03:26,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:03:26,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:03:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 167 proven. 135 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-23 17:03:27,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:03:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-23 17:03:28,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:03:28,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178293547] [2021-11-23 17:03:28,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178293547] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 17:03:28,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 17:03:28,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-11-23 17:03:28,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052168556] [2021-11-23 17:03:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:03:28,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:03:28,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:03:28,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:03:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:03:28,434 INFO L87 Difference]: Start difference. First operand 1072 states and 1321 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:03:37,384 INFO L93 Difference]: Finished difference Result 2142 states and 2812 transitions. [2021-11-23 17:03:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:03:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 337 [2021-11-23 17:03:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:03:37,394 INFO L225 Difference]: With dead ends: 2142 [2021-11-23 17:03:37,395 INFO L226 Difference]: Without dead ends: 1428 [2021-11-23 17:03:37,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:03:37,398 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 133 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:03:37,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 59 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 17:03:37,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-11-23 17:03:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2021-11-23 17:03:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.238262088297127) internal successors, (1767), 1427 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1767 transitions. [2021-11-23 17:03:37,445 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1767 transitions. Word has length 337 [2021-11-23 17:03:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:03:37,447 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1767 transitions. [2021-11-23 17:03:37,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1767 transitions. [2021-11-23 17:03:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-23 17:03:37,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:03:37,461 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:03:37,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 17:03:37,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:03:37,675 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:03:37,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:03:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1654788344, now seen corresponding path program 1 times [2021-11-23 17:03:37,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:03:37,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223877178] [2021-11-23 17:03:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:03:37,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:03:37,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:03:37,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:03:37,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 17:03:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:03:37,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:03:37,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:03:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 444 proven. 159 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-23 17:03:39,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:03:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-23 17:03:41,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:03:41,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223877178] [2021-11-23 17:03:41,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223877178] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 17:03:41,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 17:03:41,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-11-23 17:03:41,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167002564] [2021-11-23 17:03:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:03:41,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:03:41,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:03:41,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:03:41,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:03:41,439 INFO L87 Difference]: Start difference. First operand 1428 states and 1767 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 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) [2021-11-23 17:03:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:03:50,967 INFO L93 Difference]: Finished difference Result 3210 states and 4150 transitions. [2021-11-23 17:03:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:03:50,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 448 [2021-11-23 17:03:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:03:50,983 INFO L225 Difference]: With dead ends: 3210 [2021-11-23 17:03:50,983 INFO L226 Difference]: Without dead ends: 2140 [2021-11-23 17:03:50,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:03:50,986 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:03:51,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 248 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-23 17:03:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-11-23 17:03:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2021-11-23 17:03:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.2463768115942029) internal successors, (2666), 2139 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:03:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2666 transitions. [2021-11-23 17:03:51,075 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2666 transitions. Word has length 448 [2021-11-23 17:03:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:03:51,076 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2666 transitions. [2021-11-23 17:03:51,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 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) [2021-11-23 17:03:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2666 transitions. [2021-11-23 17:03:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-23 17:03:51,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:03:51,098 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:03:51,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 17:03:51,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:03:51,316 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:03:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:03:51,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1113063216, now seen corresponding path program 1 times [2021-11-23 17:03:51,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:03:51,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987484963] [2021-11-23 17:03:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:03:51,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:03:51,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:03:51,321 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:03:51,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 17:03:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:03:51,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:03:51,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:03:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 403 proven. 277 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-23 17:03:53,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:04:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 651 proven. 29 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-23 17:04:05,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:04:05,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987484963] [2021-11-23 17:04:05,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987484963] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:04:05,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [810654258] [2021-11-23 17:04:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:04:05,726 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:04:05,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:04:05,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:04:05,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-23 17:04:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:04:06,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:04:06,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:04:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 460 proven. 50 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-23 17:04:08,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:04:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 486 proven. 24 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-23 17:04:10,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [810654258] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:04:10,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878956609] [2021-11-23 17:04:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:04:10,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:04:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:04:10,672 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:04:10,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 17:04:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:04:10,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 17:04:10,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:04:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 372 proven. 144 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-23 17:04:13,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:04:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 372 proven. 144 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-23 17:04:15,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878956609] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:04:15,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:04:15,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 7, 7, 4, 4] total 18 [2021-11-23 17:04:15,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76623228] [2021-11-23 17:04:15,313 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:04:15,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 17:04:15,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:04:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 17:04:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-11-23 17:04:15,323 INFO L87 Difference]: Start difference. First operand 2140 states and 2666 transitions. Second operand has 18 states, 18 states have (on average 53.166666666666664) internal successors, (957), 18 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:05:36,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 17:05:38,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 17:05:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:05:40,135 INFO L93 Difference]: Finished difference Result 5961 states and 7552 transitions. [2021-11-23 17:05:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 17:05:40,141 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 53.166666666666664) internal successors, (957), 18 states have internal predecessors, (957), 0 states have call successors, (0), 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 464 [2021-11-23 17:05:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:05:40,166 INFO L225 Difference]: With dead ends: 5961 [2021-11-23 17:05:40,166 INFO L226 Difference]: Without dead ends: 3920 [2021-11-23 17:05:40,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2795 GetRequests, 2767 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2021-11-23 17:05:40,181 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1939 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 1346 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1346 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.4s IncrementalHoareTripleChecker+Time [2021-11-23 17:05:40,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1939 Valid, 90 Invalid, 5546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1346 Valid, 4199 Invalid, 1 Unknown, 0 Unchecked, 81.4s Time] [2021-11-23 17:05:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2021-11-23 17:05:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3564. [2021-11-23 17:05:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.0836373842267752) internal successors, (3861), 3563 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:05:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 3861 transitions. [2021-11-23 17:05:40,283 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 3861 transitions. Word has length 464 [2021-11-23 17:05:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:05:40,284 INFO L470 AbstractCegarLoop]: Abstraction has 3564 states and 3861 transitions. [2021-11-23 17:05:40,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 53.166666666666664) internal successors, (957), 18 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:05:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 3861 transitions. [2021-11-23 17:05:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2021-11-23 17:05:40,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:05:40,295 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:05:40,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-23 17:05:40,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 17:05:40,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 17:05:40,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:05:40,897 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:05:40,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:05:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1882058753, now seen corresponding path program 1 times [2021-11-23 17:05:40,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:05:40,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649844752] [2021-11-23 17:05:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:05:40,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:05:40,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:05:40,907 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:05:40,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 17:05:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:05:41,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 17:05:41,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:05:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 279 proven. 898 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-23 17:05:52,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 909 proven. 268 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-23 17:06:20,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:20,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649844752] [2021-11-23 17:06:20,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649844752] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:20,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1910596779] [2021-11-23 17:06:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:20,319 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:20,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:06:20,320 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:06:20,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-23 17:06:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:20,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 17:06:20,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-11-23 17:06:22,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:06:22,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1910596779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:06:22,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 17:06:22,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 10] total 22 [2021-11-23 17:06:22,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472331550] [2021-11-23 17:06:22,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:06:22,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:06:22,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:06:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2021-11-23 17:06:22,154 INFO L87 Difference]: Start difference. First operand 3564 states and 3861 transitions. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:27,528 INFO L93 Difference]: Finished difference Result 8062 states and 8968 transitions. [2021-11-23 17:06:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:06:27,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 712 [2021-11-23 17:06:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:27,552 INFO L225 Difference]: With dead ends: 8062 [2021-11-23 17:06:27,552 INFO L226 Difference]: Without dead ends: 5212 [2021-11-23 17:06:27,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2135 GetRequests, 2114 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-23 17:06:27,557 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 384 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:27,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 30 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 17:06:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2021-11-23 17:06:27,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 5166. [2021-11-23 17:06:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.094675701839303) internal successors, (5654), 5165 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5654 transitions. [2021-11-23 17:06:27,684 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5654 transitions. Word has length 712 [2021-11-23 17:06:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:27,686 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5654 transitions. [2021-11-23 17:06:27,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5654 transitions. [2021-11-23 17:06:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2021-11-23 17:06:27,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:27,696 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:27,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-23 17:06:27,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-23 17:06:28,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:28,110 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:06:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash 845852311, now seen corresponding path program 1 times [2021-11-23 17:06:28,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:28,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179720773] [2021-11-23 17:06:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:28,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:28,115 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:28,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 17:06:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:28,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 17:06:28,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 718 proven. 898 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-23 17:06:38,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:07:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 1348 proven. 268 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-23 17:07:05,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:07:05,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179720773] [2021-11-23 17:07:05,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179720773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:07:05,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [876796038] [2021-11-23 17:07:05,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:07:05,434 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:07:05,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:07:05,435 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:07:05,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-23 17:07:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:07:05,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:07:05,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:07:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-23 17:07:07,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:07:07,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [876796038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:07:07,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 17:07:07,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 24 [2021-11-23 17:07:07,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892707757] [2021-11-23 17:07:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:07:07,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 17:07:07,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:07:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 17:07:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-11-23 17:07:07,854 INFO L87 Difference]: Start difference. First operand 5166 states and 5654 transitions. Second operand has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:07:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:07:11,773 INFO L93 Difference]: Finished difference Result 11788 states and 12949 transitions. [2021-11-23 17:07:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 17:07:11,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 800 [2021-11-23 17:07:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:07:11,811 INFO L225 Difference]: With dead ends: 11788 [2021-11-23 17:07:11,811 INFO L226 Difference]: Without dead ends: 7158 [2021-11-23 17:07:11,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2399 GetRequests, 2376 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-11-23 17:07:11,817 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 624 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 17:07:11,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 39 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 17:07:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2021-11-23 17:07:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 6412. [2021-11-23 17:07:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 6411 states have (on average 1.0748713149274685) internal successors, (6891), 6411 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:07:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 6891 transitions. [2021-11-23 17:07:12,007 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 6891 transitions. Word has length 800 [2021-11-23 17:07:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:07:12,008 INFO L470 AbstractCegarLoop]: Abstraction has 6412 states and 6891 transitions. [2021-11-23 17:07:12,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:07:12,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 6891 transitions. [2021-11-23 17:07:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2021-11-23 17:07:12,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:07:12,020 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:07:12,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-23 17:07:12,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 17:07:12,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:07:12,423 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:07:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:07:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 378893047, now seen corresponding path program 1 times [2021-11-23 17:07:12,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:07:12,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979331357] [2021-11-23 17:07:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:07:12,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:07:12,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:07:12,430 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:07:12,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 17:07:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:07:12,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 17:07:12,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:07:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2299 backedges. 504 proven. 1621 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-23 17:07:22,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:07:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2299 backedges. 1431 proven. 694 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-23 17:07:46,270 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:07:46,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979331357] [2021-11-23 17:07:46,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979331357] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:07:46,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1621603915] [2021-11-23 17:07:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:07:46,272 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:07:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:07:46,273 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:07:46,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-23 17:07:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:07:46,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 17:07:46,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:07:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2299 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 1908 trivial. 0 not checked. [2021-11-23 17:07:48,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:07:48,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1621603915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:07:48,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 17:07:48,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 12] total 25 [2021-11-23 17:07:48,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609205383] [2021-11-23 17:07:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:07:48,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:07:48,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:07:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:07:48,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-11-23 17:07:48,114 INFO L87 Difference]: Start difference. First operand 6412 states and 6891 transitions. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:07:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:07:52,446 INFO L93 Difference]: Finished difference Result 13215 states and 14302 transitions. [2021-11-23 17:07:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:07:52,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 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 857 [2021-11-23 17:07:52,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:07:52,455 INFO L225 Difference]: With dead ends: 13215 [2021-11-23 17:07:52,455 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 17:07:52,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2570 GetRequests, 2546 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2021-11-23 17:07:52,468 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 517 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:07:52,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 24 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 17:07:52,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 17:07:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 17:07:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:07:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 17:07:52,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 857 [2021-11-23 17:07:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:07:52,471 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 17:07:52,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:07:52,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 17:07:52,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 17:07:52,474 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 17:07:52,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-23 17:07:52,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 17:07:52,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:07:52,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 17:07:57,437 INFO L858 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-11-23 17:07:57,437 INFO L858 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-11-23 17:07:57,437 INFO L858 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-11-23 17:07:57,437 INFO L858 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-11-23 17:07:57,438 INFO L858 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-11-23 17:07:57,438 INFO L858 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,438 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,438 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,438 INFO L858 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-11-23 17:07:57,438 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-11-23 17:07:57,438 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,439 INFO L858 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-11-23 17:07:57,440 INFO L858 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-11-23 17:07:57,440 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-11-23 17:07:57,440 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-11-23 17:07:57,440 INFO L858 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-11-23 17:07:57,440 INFO L858 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-11-23 17:07:57,441 INFO L858 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-11-23 17:07:57,441 INFO L858 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-11-23 17:07:57,441 INFO L858 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-11-23 17:07:57,441 INFO L858 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,441 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,441 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,441 INFO L858 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-11-23 17:07:57,442 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-11-23 17:07:57,442 INFO L858 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-11-23 17:07:57,442 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-11-23 17:07:57,442 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-11-23 17:07:57,442 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-11-23 17:07:57,442 INFO L858 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-11-23 17:07:57,442 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,442 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,443 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,443 INFO L858 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-11-23 17:07:57,443 INFO L858 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-11-23 17:07:57,443 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-11-23 17:07:57,443 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-11-23 17:07:57,443 INFO L858 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-11-23 17:07:57,444 INFO L858 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-11-23 17:07:57,444 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-11-23 17:07:57,444 INFO L858 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-11-23 17:07:57,444 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,444 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,444 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,444 INFO L858 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,445 INFO L858 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-11-23 17:07:57,446 INFO L858 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-11-23 17:07:57,446 INFO L858 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-11-23 17:07:57,446 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-11-23 17:07:57,446 INFO L858 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-11-23 17:07:57,446 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-11-23 17:07:57,446 INFO L858 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-11-23 17:07:57,446 INFO L858 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-11-23 17:07:57,446 INFO L858 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-11-23 17:07:57,447 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-11-23 17:07:57,448 INFO L858 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,449 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 188) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-11-23 17:07:57,450 INFO L858 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,451 INFO L858 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-11-23 17:07:57,452 INFO L858 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,453 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,453 INFO L858 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,453 INFO L858 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-11-23 17:07:57,453 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-11-23 17:07:57,453 INFO L858 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-11-23 17:07:57,453 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-11-23 17:07:57,454 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-11-23 17:07:57,454 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-11-23 17:07:57,454 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-11-23 17:07:57,454 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-11-23 17:07:57,454 INFO L858 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,454 INFO L858 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,455 INFO L858 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,455 INFO L858 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-11-23 17:07:57,455 INFO L858 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-11-23 17:07:57,455 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-11-23 17:07:57,455 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-11-23 17:07:57,455 INFO L858 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-11-23 17:07:57,456 INFO L858 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-11-23 17:07:57,456 INFO L858 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-11-23 17:07:57,456 INFO L858 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-11-23 17:07:57,456 INFO L858 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,456 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,456 INFO L858 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,456 INFO L858 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-11-23 17:07:57,457 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-11-23 17:07:57,457 INFO L858 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-11-23 17:07:57,457 INFO L858 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-11-23 17:07:57,457 INFO L858 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-11-23 17:07:57,457 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-11-23 17:07:57,457 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-11-23 17:07:57,458 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-11-23 17:07:57,458 INFO L858 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,458 INFO L858 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,458 INFO L858 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-11-23 17:07:57,458 INFO L858 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-11-23 17:07:57,458 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-11-23 17:07:57,458 INFO L858 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-11-23 17:07:57,459 INFO L858 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-11-23 17:07:57,459 INFO L858 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-11-23 17:07:57,459 INFO L858 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-11-23 17:07:57,459 INFO L858 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-11-23 17:07:57,459 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,459 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,460 INFO L858 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-11-23 17:07:57,460 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 17:07:57,460 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-11-23 17:07:57,460 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-11-23 17:07:57,460 INFO L858 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-11-23 17:07:57,460 INFO L858 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-11-23 17:07:57,460 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-11-23 17:07:57,461 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,461 INFO L858 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,461 INFO L854 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse0 (= (_ bv6 32) ~a21~0)) (.cse3 (bvsle (bvmul (bvsdiv (bvadd (_ bv4294438260 32) ~a12~0) (_ bv5 32)) (_ bv5 32)) (_ bv4294967253 32))) (.cse2 (not (bvsle ~a12~0 (_ bv4294967253 32)))) (.cse1 (= (_ bv1 32) ~a24~0))) (or (and (= (_ bv5 32) ~a15~0) (not (bvslt (_ bv4294967253 32) ~a12~0)) .cse0) (and (not (= (_ bv6 32) ~a15~0)) .cse1) (and (= ~a21~0 (_ bv9 32)) .cse1) (and .cse2 .cse3 .cse0 .cse1) (and (= (_ bv8 32) ~a21~0) .cse2 .cse3 .cse1) (and .cse2 .cse1 (not (bvslt (_ bv11 32) ~a12~0))))) [2021-11-23 17:07:57,461 INFO L858 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-11-23 17:07:57,462 INFO L858 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-11-23 17:07:57,462 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-11-23 17:07:57,462 INFO L858 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-11-23 17:07:57,462 INFO L858 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-11-23 17:07:57,462 INFO L858 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-11-23 17:07:57,462 INFO L858 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-11-23 17:07:57,463 INFO L858 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-11-23 17:07:57,463 INFO L858 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,463 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,463 INFO L861 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-11-23 17:07:57,463 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-11-23 17:07:57,463 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-11-23 17:07:57,463 INFO L858 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-11-23 17:07:57,464 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-11-23 17:07:57,464 INFO L858 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-11-23 17:07:57,464 INFO L858 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-11-23 17:07:57,464 INFO L858 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-11-23 17:07:57,464 INFO L858 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,464 INFO L858 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,465 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 17:07:57,465 INFO L858 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-11-23 17:07:57,465 INFO L858 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-11-23 17:07:57,465 INFO L858 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-11-23 17:07:57,465 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-11-23 17:07:57,465 INFO L858 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-11-23 17:07:57,465 INFO L858 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-11-23 17:07:57,466 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,466 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,466 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-11-23 17:07:57,466 INFO L858 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,466 INFO L858 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-11-23 17:07:57,467 INFO L854 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse0 (= (_ bv6 32) ~a21~0)) (.cse3 (bvsle (bvmul (bvsdiv (bvadd (_ bv4294438260 32) ~a12~0) (_ bv5 32)) (_ bv5 32)) (_ bv4294967253 32))) (.cse2 (not (bvsle ~a12~0 (_ bv4294967253 32)))) (.cse1 (= (_ bv1 32) ~a24~0))) (or (and (= (_ bv5 32) ~a15~0) (not (bvslt (_ bv4294967253 32) ~a12~0)) .cse0) (and (not (= (_ bv6 32) ~a15~0)) .cse1) (and (= ~a21~0 (_ bv9 32)) .cse1) (and .cse2 .cse3 .cse0 .cse1) (and (= (_ bv8 32) ~a21~0) .cse2 .cse3 .cse1) (and .cse2 .cse1 (not (bvslt (_ bv11 32) ~a12~0))))) [2021-11-23 17:07:57,467 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-11-23 17:07:57,467 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-11-23 17:07:57,467 INFO L858 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-11-23 17:07:57,467 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-11-23 17:07:57,467 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-11-23 17:07:57,467 INFO L858 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-11-23 17:07:57,468 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-11-23 17:07:57,472 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:07:57,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 17:07:57,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:07:57 BoogieIcfgContainer [2021-11-23 17:07:57,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 17:07:57,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 17:07:57,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 17:07:57,492 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 17:07:57,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:03:02" (3/4) ... [2021-11-23 17:07:57,495 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 17:07:57,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-23 17:07:57,518 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 17:07:57,520 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 17:07:57,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 17:07:57,644 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 17:07:57,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 17:07:57,645 INFO L158 Benchmark]: Toolchain (without parser) took 299836.54ms. Allocated memory was 54.5MB in the beginning and 218.1MB in the end (delta: 163.6MB). Free memory was 30.3MB in the beginning and 119.8MB in the end (delta: -89.5MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. [2021-11-23 17:07:57,645 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:07:57,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 804.32ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 30.1MB in the beginning and 42.4MB in the end (delta: -12.3MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-11-23 17:07:57,646 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.13ms. Allocated memory is still 71.3MB. Free memory was 42.4MB in the beginning and 36.0MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:07:57,647 INFO L158 Benchmark]: Boogie Preprocessor took 163.50ms. Allocated memory is still 71.3MB. Free memory was 36.0MB in the beginning and 46.6MB in the end (delta: -10.6MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2021-11-23 17:07:57,647 INFO L158 Benchmark]: RCFGBuilder took 3642.79ms. Allocated memory was 71.3MB in the beginning and 102.8MB in the end (delta: 31.5MB). Free memory was 46.6MB in the beginning and 46.2MB in the end (delta: 396.5kB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2021-11-23 17:07:57,648 INFO L158 Benchmark]: TraceAbstraction took 294957.86ms. Allocated memory was 102.8MB in the beginning and 218.1MB in the end (delta: 115.3MB). Free memory was 45.6MB in the beginning and 138.7MB in the end (delta: -93.0MB). Peak memory consumption was 129.2MB. Max. memory is 16.1GB. [2021-11-23 17:07:57,648 INFO L158 Benchmark]: Witness Printer took 153.33ms. Allocated memory is still 218.1MB. Free memory was 138.7MB in the beginning and 119.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 17:07:57,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 804.32ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 30.1MB in the beginning and 42.4MB in the end (delta: -12.3MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.13ms. Allocated memory is still 71.3MB. Free memory was 42.4MB in the beginning and 36.0MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 163.50ms. Allocated memory is still 71.3MB. Free memory was 36.0MB in the beginning and 46.6MB in the end (delta: -10.6MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3642.79ms. Allocated memory was 71.3MB in the beginning and 102.8MB in the end (delta: 31.5MB). Free memory was 46.6MB in the beginning and 46.2MB in the end (delta: 396.5kB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * TraceAbstraction took 294957.86ms. Allocated memory was 102.8MB in the beginning and 218.1MB in the end (delta: 115.3MB). Free memory was 45.6MB in the beginning and 138.7MB in the end (delta: -93.0MB). Peak memory consumption was 129.2MB. Max. memory is 16.1GB. * Witness Printer took 153.33ms. Allocated memory is still 218.1MB. Free memory was 138.7MB in the beginning and 119.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. 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 - PositiveResult [Line: 188]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 294.8s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 134.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 4276 SdHoareTripleChecker+Valid, 129.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4276 mSDsluCounter, 1048 SdHoareTripleChecker+Invalid, 118.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 175 mSDsCounter, 2265 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11029 IncrementalHoareTripleChecker+Invalid, 13295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2265 mSolverCounterUnsat, 873 mSDtfsCounter, 11029 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12207 GetRequests, 12099 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6412occurred in iteration=10, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 1148 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 111 NumberOfFragments, 159 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1720 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3760 FormulaSimplificationTreeSizeReductionInter, 4.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 147.7s InterpolantComputationTime, 7662 NumberOfCodeBlocks, 7662 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 12184 ConstructedInterpolants, 0 QuantifiedInterpolants, 117229 SizeOfPredicates, 52 NumberOfNonLiveVariables, 8693 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 18809/24418 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((5bv32 == a15 && !~bvslt32(4294967253bv32, a12)) && 6bv32 == a21) || (!(6bv32 == a15) && 1bv32 == a24)) || (a21 == 9bv32 && 1bv32 == a24)) || (((!~bvsle32(a12, 4294967253bv32) && ~bvsle32(~bvmul32(~bvsdiv32(~bvadd64(4294438260bv32, a12), 5bv32), 5bv32), 4294967253bv32)) && 6bv32 == a21) && 1bv32 == a24)) || (((8bv32 == a21 && !~bvsle32(a12, 4294967253bv32)) && ~bvsle32(~bvmul32(~bvsdiv32(~bvadd64(4294438260bv32, a12), 5bv32), 5bv32), 4294967253bv32)) && 1bv32 == a24)) || ((!~bvsle32(a12, 4294967253bv32) && 1bv32 == a24) && !~bvslt32(11bv32, a12)) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((5bv32 == a15 && !~bvslt32(4294967253bv32, a12)) && 6bv32 == a21) || (!(6bv32 == a15) && 1bv32 == a24)) || (a21 == 9bv32 && 1bv32 == a24)) || (((!~bvsle32(a12, 4294967253bv32) && ~bvsle32(~bvmul32(~bvsdiv32(~bvadd64(4294438260bv32, a12), 5bv32), 5bv32), 4294967253bv32)) && 6bv32 == a21) && 1bv32 == a24)) || (((8bv32 == a21 && !~bvsle32(a12, 4294967253bv32)) && ~bvsle32(~bvmul32(~bvsdiv32(~bvadd64(4294438260bv32, a12), 5bv32), 5bv32), 4294967253bv32)) && 1bv32 == a24)) || ((!~bvsle32(a12, 4294967253bv32) && 1bv32 == a24) && !~bvslt32(11bv32, a12)) RESULT: Ultimate proved your program to be correct! [2021-11-23 17:07:57,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03450b94-eea7-46ec-aadd-af1052034740/bin/utaipan-fb15Y9Yzbl/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 Writing output log to file Ultimate.log Result: TRUE