./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0513_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0513_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2cd9310cc22b48510db29915dc2047c5968d5424a204e513aea9283dac5ac7bf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:39:30,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:39:30,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:39:30,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:39:30,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:39:30,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:39:30,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:39:30,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:39:30,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:39:30,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:39:30,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:39:30,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:39:30,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:39:30,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:39:30,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:39:30,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:39:30,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:39:30,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:39:30,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:39:30,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:39:30,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:39:30,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:39:30,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:39:30,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:39:30,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:39:30,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:39:30,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:39:30,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:39:30,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:39:30,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:39:30,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:39:30,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:39:30,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:39:30,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:39:30,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:39:30,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:39:30,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:39:30,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:39:30,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:39:30,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:39:30,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:39:30,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:39:30,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:39:30,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:39:30,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:39:30,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:39:30,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:39:30,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:39:30,713 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:39:30,713 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:39:30,714 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:39:30,714 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:39:30,715 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:39:30,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:39:30,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:39:30,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:39:30,717 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:39:30,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:39:30,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:39:30,718 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:39:30,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:39:30,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:39:30,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:39:30,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:39:30,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:39:30,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:39:30,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:39:30,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:39:30,723 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:39:30,723 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:39:30,723 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:39:30,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:39:30,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:39:30,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:39:30,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:39:30,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:39:30,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:39:30,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:39:30,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:39:30,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:39:30,726 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:39:30,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:39:30,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:39:30,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:39:30,728 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_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cd9310cc22b48510db29915dc2047c5968d5424a204e513aea9283dac5ac7bf [2021-11-23 03:39:31,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:39:31,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:39:31,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:39:31,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:39:31,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:39:31,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-ext-properties/test-0513_1.i [2021-11-23 03:39:31,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data/7f875ca4d/ad6c3cba0d394401a87f929ee5eff7ea/FLAGb83863f6e [2021-11-23 03:39:31,800 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:39:31,800 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/sv-benchmarks/c/list-ext-properties/test-0513_1.i [2021-11-23 03:39:31,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data/7f875ca4d/ad6c3cba0d394401a87f929ee5eff7ea/FLAGb83863f6e [2021-11-23 03:39:32,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data/7f875ca4d/ad6c3cba0d394401a87f929ee5eff7ea [2021-11-23 03:39:32,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:39:32,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:39:32,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:39:32,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:39:32,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:39:32,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dddcb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32, skipping insertion in model container [2021-11-23 03:39:32,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:39:32,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:39:32,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:39:32,619 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:39:32,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:39:32,760 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:39:32,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32 WrapperNode [2021-11-23 03:39:32,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:39:32,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:39:32,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:39:32,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:39:32,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,867 INFO L137 Inliner]: procedures = 123, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 148 [2021-11-23 03:39:32,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:39:32,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:39:32,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:39:32,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:39:32,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:39:32,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:39:32,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:39:32,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:39:32,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (1/1) ... [2021-11-23 03:39:32,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:39:32,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:39:33,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:39:33,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:39:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:39:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:39:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:39:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:39:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:39:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:39:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:39:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:39:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:39:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:39:33,183 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:39:33,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:39:33,891 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:39:33,983 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:39:33,983 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:39:33,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:33 BoogieIcfgContainer [2021-11-23 03:39:33,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:39:33,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:39:33,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:39:34,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:39:34,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:39:32" (1/3) ... [2021-11-23 03:39:34,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29de5a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:39:34, skipping insertion in model container [2021-11-23 03:39:34,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:32" (2/3) ... [2021-11-23 03:39:34,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29de5a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:39:34, skipping insertion in model container [2021-11-23 03:39:34,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:33" (3/3) ... [2021-11-23 03:39:34,013 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0513_1.i [2021-11-23 03:39:34,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:39:34,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-11-23 03:39:34,085 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:39:34,094 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 03:39:34,095 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-11-23 03:39:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 58 states have (on average 2.4827586206896552) internal successors, (144), 128 states have internal predecessors, (144), 0 states have call successors, (0), 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 03:39:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:39:34,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:34,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:39:34,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash 8779699, now seen corresponding path program 1 times [2021-11-23 03:39:34,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:34,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903909797] [2021-11-23 03:39:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:34,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:34,337 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 03:39:34,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:34,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903909797] [2021-11-23 03:39:34,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903909797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:34,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:34,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:39:34,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564192798] [2021-11-23 03:39:34,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:34,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:39:34,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:39:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:39:34,389 INFO L87 Difference]: Start difference. First operand has 129 states, 58 states have (on average 2.4827586206896552) internal successors, (144), 128 states have internal predecessors, (144), 0 states have call successors, (0), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 03:39:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:34,506 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2021-11-23 03:39:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:39:34,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-11-23 03:39:34,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:34,556 INFO L225 Difference]: With dead ends: 129 [2021-11-23 03:39:34,556 INFO L226 Difference]: Without dead ends: 128 [2021-11-23 03:39:34,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:39:34,564 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:34,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:39:34,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-23 03:39:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-23 03:39:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 58 states have (on average 2.4310344827586206) internal successors, (141), 127 states have internal predecessors, (141), 0 states have call successors, (0), 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 03:39:34,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-11-23 03:39:34,620 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 4 [2021-11-23 03:39:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:34,620 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-11-23 03:39:34,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 03:39:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-11-23 03:39:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:39:34,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:34,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:39:34,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:39:34,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:34,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:34,625 INFO L85 PathProgramCache]: Analyzing trace with hash 8970961, now seen corresponding path program 1 times [2021-11-23 03:39:34,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:34,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270641058] [2021-11-23 03:39:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:34,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:34,694 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 03:39:34,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:34,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270641058] [2021-11-23 03:39:34,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270641058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:34,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:34,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:39:34,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164775281] [2021-11-23 03:39:34,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:34,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:39:34,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:34,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:39:34,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:34,700 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 03:39:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:34,905 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2021-11-23 03:39:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:39:34,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-11-23 03:39:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:34,909 INFO L225 Difference]: With dead ends: 151 [2021-11-23 03:39:34,910 INFO L226 Difference]: Without dead ends: 151 [2021-11-23 03:39:34,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:34,913 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 73 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:34,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 140 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:39:34,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-23 03:39:34,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 126. [2021-11-23 03:39:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 61 states have (on average 2.3442622950819674) internal successors, (143), 125 states have internal predecessors, (143), 0 states have call successors, (0), 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 03:39:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2021-11-23 03:39:34,932 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 4 [2021-11-23 03:39:34,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:34,932 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2021-11-23 03:39:34,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 03:39:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2021-11-23 03:39:34,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:39:34,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:34,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:39:34,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:39:34,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash 8970962, now seen corresponding path program 1 times [2021-11-23 03:39:34,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:34,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651914677] [2021-11-23 03:39:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:34,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:35,032 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 03:39:35,032 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:35,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651914677] [2021-11-23 03:39:35,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651914677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:35,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:35,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:39:35,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074970183] [2021-11-23 03:39:35,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:35,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:39:35,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:39:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:35,037 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 03:39:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:35,184 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-11-23 03:39:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:39:35,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-11-23 03:39:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:35,186 INFO L225 Difference]: With dead ends: 122 [2021-11-23 03:39:35,187 INFO L226 Difference]: Without dead ends: 122 [2021-11-23 03:39:35,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:35,189 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 26 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:35,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 149 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:39:35,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-23 03:39:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-23 03:39:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 61 states have (on average 2.278688524590164) internal successors, (139), 121 states have internal predecessors, (139), 0 states have call successors, (0), 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 03:39:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2021-11-23 03:39:35,203 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 4 [2021-11-23 03:39:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:35,204 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2021-11-23 03:39:35,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 03:39:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2021-11-23 03:39:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 03:39:35,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:35,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 03:39:35,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:39:35,206 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:35,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:35,207 INFO L85 PathProgramCache]: Analyzing trace with hash 277849128, now seen corresponding path program 1 times [2021-11-23 03:39:35,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:35,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441829957] [2021-11-23 03:39:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:35,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:35,240 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 03:39:35,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:35,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441829957] [2021-11-23 03:39:35,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441829957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:35,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:35,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 03:39:35,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28038775] [2021-11-23 03:39:35,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:35,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:39:35,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:39:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:35,245 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:39:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:35,400 INFO L93 Difference]: Finished difference Result 163 states and 182 transitions. [2021-11-23 03:39:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:39:35,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-23 03:39:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:35,402 INFO L225 Difference]: With dead ends: 163 [2021-11-23 03:39:35,403 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 03:39:35,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 03:39:35,405 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 37 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:35,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 159 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:39:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 03:39:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 125. [2021-11-23 03:39:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 64 states have (on average 2.234375) internal successors, (143), 124 states have internal predecessors, (143), 0 states have call successors, (0), 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 03:39:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2021-11-23 03:39:35,418 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 5 [2021-11-23 03:39:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:35,419 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2021-11-23 03:39:35,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:39:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2021-11-23 03:39:35,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 03:39:35,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:35,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 03:39:35,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:39:35,421 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 277849032, now seen corresponding path program 1 times [2021-11-23 03:39:35,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:35,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118448589] [2021-11-23 03:39:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:35,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:35,459 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 03:39:35,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:35,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118448589] [2021-11-23 03:39:35,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118448589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:35,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:35,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:39:35,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922995636] [2021-11-23 03:39:35,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:35,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:39:35,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:35,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:39:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:35,463 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:39:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:35,573 INFO L93 Difference]: Finished difference Result 136 states and 155 transitions. [2021-11-23 03:39:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:39:35,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-23 03:39:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:35,575 INFO L225 Difference]: With dead ends: 136 [2021-11-23 03:39:35,576 INFO L226 Difference]: Without dead ends: 135 [2021-11-23 03:39:35,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:35,578 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 16 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:35,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 182 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:39:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-23 03:39:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-11-23 03:39:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 2.125) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2021-11-23 03:39:35,588 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 5 [2021-11-23 03:39:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:35,589 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2021-11-23 03:39:35,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:39:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2021-11-23 03:39:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 03:39:35,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:35,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:35,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:39:35,591 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:35,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash -198828643, now seen corresponding path program 1 times [2021-11-23 03:39:35,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:35,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666411021] [2021-11-23 03:39:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:35,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:35,640 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 03:39:35,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:35,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666411021] [2021-11-23 03:39:35,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666411021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:35,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:35,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:39:35,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492308782] [2021-11-23 03:39:35,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:35,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:39:35,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:39:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:35,645 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 03:39:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:35,778 INFO L93 Difference]: Finished difference Result 251 states and 282 transitions. [2021-11-23 03:39:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:39:35,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-23 03:39:35,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:35,781 INFO L225 Difference]: With dead ends: 251 [2021-11-23 03:39:35,781 INFO L226 Difference]: Without dead ends: 251 [2021-11-23 03:39:35,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:35,783 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 127 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:35,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 326 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:39:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-23 03:39:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 136. [2021-11-23 03:39:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 2.04) internal successors, (153), 135 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2021-11-23 03:39:35,795 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 10 [2021-11-23 03:39:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:35,795 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2021-11-23 03:39:35,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 03:39:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2021-11-23 03:39:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:39:35,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:35,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:35,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:39:35,798 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:35,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1269097050, now seen corresponding path program 1 times [2021-11-23 03:39:35,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:35,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514236417] [2021-11-23 03:39:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:35,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:35,891 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 03:39:35,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:35,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514236417] [2021-11-23 03:39:35,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514236417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:35,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:35,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:39:35,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517218031] [2021-11-23 03:39:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:35,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:39:35,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:39:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:35,895 INFO L87 Difference]: Start difference. First operand 136 states and 153 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:36,018 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2021-11-23 03:39:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:39:36,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 03:39:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:36,020 INFO L225 Difference]: With dead ends: 132 [2021-11-23 03:39:36,020 INFO L226 Difference]: Without dead ends: 132 [2021-11-23 03:39:36,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:36,022 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 19 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:36,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 146 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:39:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-23 03:39:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-11-23 03:39:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 75 states have (on average 1.9866666666666666) internal successors, (149), 131 states have internal predecessors, (149), 0 states have call successors, (0), 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 03:39:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2021-11-23 03:39:36,030 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 13 [2021-11-23 03:39:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:36,030 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2021-11-23 03:39:36,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2021-11-23 03:39:36,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:39:36,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:36,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:36,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:39:36,032 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:36,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1269097049, now seen corresponding path program 1 times [2021-11-23 03:39:36,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:36,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098888935] [2021-11-23 03:39:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:36,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:36,090 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 03:39:36,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:36,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098888935] [2021-11-23 03:39:36,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098888935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:36,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:36,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:39:36,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883289383] [2021-11-23 03:39:36,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:36,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:39:36,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:36,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:39:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:36,094 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:36,248 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2021-11-23 03:39:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:39:36,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 03:39:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:36,250 INFO L225 Difference]: With dead ends: 129 [2021-11-23 03:39:36,250 INFO L226 Difference]: Without dead ends: 129 [2021-11-23 03:39:36,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:36,252 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:36,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 155 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:39:36,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-23 03:39:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-23 03:39:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 75 states have (on average 1.9466666666666668) internal successors, (146), 128 states have internal predecessors, (146), 0 states have call successors, (0), 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 03:39:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 146 transitions. [2021-11-23 03:39:36,258 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 146 transitions. Word has length 13 [2021-11-23 03:39:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:36,259 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 146 transitions. [2021-11-23 03:39:36,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 146 transitions. [2021-11-23 03:39:36,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:39:36,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:36,260 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:36,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:39:36,261 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:36,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1296482864, now seen corresponding path program 1 times [2021-11-23 03:39:36,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:36,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400360062] [2021-11-23 03:39:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:36,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:36,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:36,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400360062] [2021-11-23 03:39:36,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400360062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:36,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:36,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:39:36,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628538992] [2021-11-23 03:39:36,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:36,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:39:36,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:39:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:36,345 INFO L87 Difference]: Start difference. First operand 129 states and 146 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 03:39:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:36,517 INFO L93 Difference]: Finished difference Result 221 states and 248 transitions. [2021-11-23 03:39:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:39:36,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:39:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:36,520 INFO L225 Difference]: With dead ends: 221 [2021-11-23 03:39:36,520 INFO L226 Difference]: Without dead ends: 221 [2021-11-23 03:39:36,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:36,524 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 126 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:36,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 216 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:39:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-23 03:39:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 129. [2021-11-23 03:39:36,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 75 states have (on average 1.92) internal successors, (144), 128 states have internal predecessors, (144), 0 states have call successors, (0), 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 03:39:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2021-11-23 03:39:36,533 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 18 [2021-11-23 03:39:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:36,533 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2021-11-23 03:39:36,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 03:39:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2021-11-23 03:39:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:39:36,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:36,536 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:36,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:39:36,537 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1296482960, now seen corresponding path program 1 times [2021-11-23 03:39:36,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:36,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208404371] [2021-11-23 03:39:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:36,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:36,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:36,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208404371] [2021-11-23 03:39:36,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208404371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:36,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:36,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:39:36,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639461519] [2021-11-23 03:39:36,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:36,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:39:36,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:39:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:36,679 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 03:39:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:36,856 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2021-11-23 03:39:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:39:36,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:39:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:36,858 INFO L225 Difference]: With dead ends: 123 [2021-11-23 03:39:36,858 INFO L226 Difference]: Without dead ends: 123 [2021-11-23 03:39:36,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:36,860 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 43 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:36,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:39:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-23 03:39:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2021-11-23 03:39:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.8157894736842106) internal successors, (138), 121 states have internal predecessors, (138), 0 states have call successors, (0), 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 03:39:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2021-11-23 03:39:36,867 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 18 [2021-11-23 03:39:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:36,868 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2021-11-23 03:39:36,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 03:39:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2021-11-23 03:39:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:39:36,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:36,869 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:36,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:39:36,870 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1296482959, now seen corresponding path program 1 times [2021-11-23 03:39:36,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:36,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112025771] [2021-11-23 03:39:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:36,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:37,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:37,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112025771] [2021-11-23 03:39:37,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112025771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:37,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:37,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:39:37,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293741211] [2021-11-23 03:39:37,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:37,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:39:37,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:39:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:37,003 INFO L87 Difference]: Start difference. First operand 122 states and 138 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 03:39:37,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:37,254 INFO L93 Difference]: Finished difference Result 197 states and 223 transitions. [2021-11-23 03:39:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:39:37,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:39:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:37,256 INFO L225 Difference]: With dead ends: 197 [2021-11-23 03:39:37,257 INFO L226 Difference]: Without dead ends: 197 [2021-11-23 03:39:37,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:37,258 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 100 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:37,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 146 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:39:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-23 03:39:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 150. [2021-11-23 03:39:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 106 states have (on average 1.8679245283018868) internal successors, (198), 149 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 198 transitions. [2021-11-23 03:39:37,268 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 198 transitions. Word has length 18 [2021-11-23 03:39:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:37,269 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 198 transitions. [2021-11-23 03:39:37,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 03:39:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 198 transitions. [2021-11-23 03:39:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:39:37,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:37,271 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:37,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:39:37,272 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash 270467576, now seen corresponding path program 1 times [2021-11-23 03:39:37,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:37,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623458205] [2021-11-23 03:39:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:37,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:37,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:37,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623458205] [2021-11-23 03:39:37,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623458205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:37,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:37,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:39:37,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304125320] [2021-11-23 03:39:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:37,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:39:37,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:39:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:37,374 INFO L87 Difference]: Start difference. First operand 150 states and 198 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:37,564 INFO L93 Difference]: Finished difference Result 197 states and 223 transitions. [2021-11-23 03:39:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:39:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 03:39:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:37,567 INFO L225 Difference]: With dead ends: 197 [2021-11-23 03:39:37,567 INFO L226 Difference]: Without dead ends: 197 [2021-11-23 03:39:37,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:39:37,568 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 215 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:37,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 248 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:39:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-23 03:39:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 151. [2021-11-23 03:39:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 107 states have (on average 1.8598130841121496) internal successors, (199), 150 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 199 transitions. [2021-11-23 03:39:37,574 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 199 transitions. Word has length 22 [2021-11-23 03:39:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:37,574 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 199 transitions. [2021-11-23 03:39:37,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 199 transitions. [2021-11-23 03:39:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:39:37,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:37,576 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:37,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:39:37,577 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 270515376, now seen corresponding path program 1 times [2021-11-23 03:39:37,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:37,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378784635] [2021-11-23 03:39:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:37,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:37,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:37,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378784635] [2021-11-23 03:39:37,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378784635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:37,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:37,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:39:37,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547423539] [2021-11-23 03:39:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:37,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:39:37,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:37,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:39:37,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:37,712 INFO L87 Difference]: Start difference. First operand 151 states and 199 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:37,905 INFO L93 Difference]: Finished difference Result 182 states and 233 transitions. [2021-11-23 03:39:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:39:37,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 03:39:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:37,907 INFO L225 Difference]: With dead ends: 182 [2021-11-23 03:39:37,907 INFO L226 Difference]: Without dead ends: 182 [2021-11-23 03:39:37,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:39:37,908 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 28 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:37,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 259 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:39:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-23 03:39:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 157. [2021-11-23 03:39:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 113 states have (on average 1.823008849557522) internal successors, (206), 156 states have internal predecessors, (206), 0 states have call successors, (0), 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 03:39:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 206 transitions. [2021-11-23 03:39:37,915 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 206 transitions. Word has length 22 [2021-11-23 03:39:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:37,916 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 206 transitions. [2021-11-23 03:39:37,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 206 transitions. [2021-11-23 03:39:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:39:37,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:37,918 INFO L514 BasicCegarLoop]: trace histogram [2, 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 03:39:37,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:39:37,918 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:37,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:37,919 INFO L85 PathProgramCache]: Analyzing trace with hash 141145884, now seen corresponding path program 1 times [2021-11-23 03:39:37,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:37,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299171022] [2021-11-23 03:39:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:37,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:38,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:38,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299171022] [2021-11-23 03:39:38,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299171022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:38,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:38,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:39:38,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881281057] [2021-11-23 03:39:38,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:38,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:39:38,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:38,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:39:38,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:39:38,079 INFO L87 Difference]: Start difference. First operand 157 states and 206 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 03:39:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:38,405 INFO L93 Difference]: Finished difference Result 302 states and 367 transitions. [2021-11-23 03:39:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:39:38,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-23 03:39:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:38,408 INFO L225 Difference]: With dead ends: 302 [2021-11-23 03:39:38,409 INFO L226 Difference]: Without dead ends: 302 [2021-11-23 03:39:38,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:39:38,410 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 294 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:38,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 270 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:39:38,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-23 03:39:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 196. [2021-11-23 03:39:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 152 states have (on average 1.7763157894736843) internal successors, (270), 195 states have internal predecessors, (270), 0 states have call successors, (0), 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 03:39:38,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 270 transitions. [2021-11-23 03:39:38,420 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 270 transitions. Word has length 25 [2021-11-23 03:39:38,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:38,420 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 270 transitions. [2021-11-23 03:39:38,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 03:39:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 270 transitions. [2021-11-23 03:39:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:39:38,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:38,422 INFO L514 BasicCegarLoop]: trace histogram [2, 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 03:39:38,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:39:38,422 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:38,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:38,423 INFO L85 PathProgramCache]: Analyzing trace with hash 141143959, now seen corresponding path program 1 times [2021-11-23 03:39:38,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:38,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198116423] [2021-11-23 03:39:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:38,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:38,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:38,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198116423] [2021-11-23 03:39:38,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198116423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:38,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:38,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:39:38,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159918201] [2021-11-23 03:39:38,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:38,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:39:38,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:38,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:39:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:39:38,697 INFO L87 Difference]: Start difference. First operand 196 states and 270 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 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 03:39:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:39,279 INFO L93 Difference]: Finished difference Result 257 states and 334 transitions. [2021-11-23 03:39:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:39:39,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-23 03:39:39,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:39,282 INFO L225 Difference]: With dead ends: 257 [2021-11-23 03:39:39,282 INFO L226 Difference]: Without dead ends: 257 [2021-11-23 03:39:39,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:39:39,283 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 194 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:39,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 323 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:39:39,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-23 03:39:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 197. [2021-11-23 03:39:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 153 states have (on average 1.7777777777777777) internal successors, (272), 196 states have internal predecessors, (272), 0 states have call successors, (0), 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 03:39:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 272 transitions. [2021-11-23 03:39:39,292 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 272 transitions. Word has length 25 [2021-11-23 03:39:39,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:39,292 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 272 transitions. [2021-11-23 03:39:39,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 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 03:39:39,293 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 272 transitions. [2021-11-23 03:39:39,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:39:39,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:39,294 INFO L514 BasicCegarLoop]: trace histogram [2, 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 03:39:39,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 03:39:39,295 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:39,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:39,295 INFO L85 PathProgramCache]: Analyzing trace with hash 141143960, now seen corresponding path program 1 times [2021-11-23 03:39:39,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:39,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43799110] [2021-11-23 03:39:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:39,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:39,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:39,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43799110] [2021-11-23 03:39:39,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43799110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:39,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:39,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:39:39,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424558863] [2021-11-23 03:39:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:39,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:39:39,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:39,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:39:39,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:39:39,508 INFO L87 Difference]: Start difference. First operand 197 states and 272 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 03:39:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:40,143 INFO L93 Difference]: Finished difference Result 296 states and 361 transitions. [2021-11-23 03:39:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:39:40,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-23 03:39:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:40,150 INFO L225 Difference]: With dead ends: 296 [2021-11-23 03:39:40,150 INFO L226 Difference]: Without dead ends: 296 [2021-11-23 03:39:40,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:39:40,152 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 236 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:40,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 244 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:39:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-23 03:39:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 199. [2021-11-23 03:39:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 155 states have (on average 1.761290322580645) internal successors, (273), 198 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 273 transitions. [2021-11-23 03:39:40,160 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 273 transitions. Word has length 25 [2021-11-23 03:39:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:40,160 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 273 transitions. [2021-11-23 03:39:40,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 03:39:40,161 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 273 transitions. [2021-11-23 03:39:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:39:40,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:40,162 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:39:40,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 03:39:40,162 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:40,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash 80496987, now seen corresponding path program 1 times [2021-11-23 03:39:40,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:40,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723679920] [2021-11-23 03:39:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:40,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:39:40,201 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:40,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723679920] [2021-11-23 03:39:40,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723679920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:40,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:40,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:39:40,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095207263] [2021-11-23 03:39:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:40,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:39:40,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:39:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:40,204 INFO L87 Difference]: Start difference. First operand 199 states and 273 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 03:39:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:40,407 INFO L93 Difference]: Finished difference Result 261 states and 354 transitions. [2021-11-23 03:39:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:39:40,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 26 [2021-11-23 03:39:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:40,412 INFO L225 Difference]: With dead ends: 261 [2021-11-23 03:39:40,412 INFO L226 Difference]: Without dead ends: 261 [2021-11-23 03:39:40,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:40,414 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 78 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:40,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 191 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:39:40,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-23 03:39:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 201. [2021-11-23 03:39:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 161 states have (on average 1.7453416149068324) internal successors, (281), 200 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 281 transitions. [2021-11-23 03:39:40,423 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 281 transitions. Word has length 26 [2021-11-23 03:39:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 281 transitions. [2021-11-23 03:39:40,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 03:39:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 281 transitions. [2021-11-23 03:39:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:39:40,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:40,425 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:39:40,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 03:39:40,426 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:40,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:40,426 INFO L85 PathProgramCache]: Analyzing trace with hash 80496988, now seen corresponding path program 1 times [2021-11-23 03:39:40,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:40,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454420322] [2021-11-23 03:39:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:40,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:40,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:40,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454420322] [2021-11-23 03:39:40,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454420322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:40,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:40,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 03:39:40,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298958096] [2021-11-23 03:39:40,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:40,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:39:40,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:40,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:39:40,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:39:40,807 INFO L87 Difference]: Start difference. First operand 201 states and 281 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 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 03:39:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:41,897 INFO L93 Difference]: Finished difference Result 304 states and 378 transitions. [2021-11-23 03:39:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:39:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-23 03:39:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:41,900 INFO L225 Difference]: With dead ends: 304 [2021-11-23 03:39:41,900 INFO L226 Difference]: Without dead ends: 304 [2021-11-23 03:39:41,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:39:41,901 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 279 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:41,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 297 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 03:39:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-23 03:39:41,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 206. [2021-11-23 03:39:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 166 states have (on average 1.7349397590361446) internal successors, (288), 205 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 288 transitions. [2021-11-23 03:39:41,910 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 288 transitions. Word has length 26 [2021-11-23 03:39:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:41,910 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 288 transitions. [2021-11-23 03:39:41,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 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 03:39:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 288 transitions. [2021-11-23 03:39:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 03:39:41,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:41,912 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:39:41,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 03:39:41,912 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:39:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash -878587905, now seen corresponding path program 1 times [2021-11-23 03:39:41,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:41,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231457203] [2021-11-23 03:39:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:41,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:42,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:42,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231457203] [2021-11-23 03:39:42,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231457203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:39:42,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406762433] [2021-11-23 03:39:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:42,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:39:42,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:39:42,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:39:42,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:39:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:42,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 03:39:42,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:39:42,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-23 03:39:42,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:42,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2021-11-23 03:39:42,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-11-23 03:39:42,878 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 03:39:42,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 34 [2021-11-23 03:39:42,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:39:43,200 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:39:43,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 41 [2021-11-23 03:39:43,257 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:39:43,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 03:39:43,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2021-11-23 03:39:43,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-23 03:39:43,869 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:39:43,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2021-11-23 03:39:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:43,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:39:44,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:39:44,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 152 [2021-11-23 03:39:44,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 202 [2021-11-23 03:39:47,726 WARN L838 $PredicateComparison]: unable to prove that (and (or (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (= |c_ULTIMATE.start_main_~item~0#1.base| |c_ULTIMATE.start_main_~data~0#1.base|) (not (= |c_ULTIMATE.start_main_~data~0#1.base| |c_ULTIMATE.start_main_~lItem~0#1.base|)) (forall ((v_DerPreprocessor_1 Int)) (< 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~lItem~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~lItem~0#1.base|) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|)))) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0)) (forall ((v_DerPreprocessor_1 Int) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~lItem~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~lItem~0#1.base|) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_DerPreprocessor_1)))) (or (let ((.cse0 (= |c_ULTIMATE.start_main_~data~0#1.base| |c_ULTIMATE.start_main_~lItem~0#1.base|))) (and (or (let ((.cse1 (= |c_ULTIMATE.start_main_~data~0#1.base| v_arrayElimCell_11))) (and (or .cse0 .cse1) (or (and (<= 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (<= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0)) .cse1))) (< v_arrayElimCell_12 0)) (or (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (< 1 (select (select .cse2 |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))) (= |c_ULTIMATE.start_main_~item~0#1.base| |c_ULTIMATE.start_main_~data~0#1.base|) (not .cse0) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0)))) (< 1 (select (select .cse2 v_arrayElimCell_11) (+ 4 v_arrayElimCell_12))))))) is different from false [2021-11-23 03:39:49,913 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse0 (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_DerPreprocessor_1)))) (or (and (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (< 1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0)) (or (and (<= 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (<= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0)) (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_11) (< v_arrayElimCell_12 0))) (< 1 (select (select .cse0 v_arrayElimCell_11) (+ 4 v_arrayElimCell_12)))))) (or (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (forall ((v_prenex_1 Int) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int)) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 1 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_prenex_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))))) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0))) is different from false [2021-11-23 03:39:56,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:39:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:56,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406762433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:39:56,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186922037] [2021-11-23 03:39:56,524 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-23 03:39:56,525 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:39:56,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:39:56,538 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:39:56,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:39:56,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 03:39:56,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:39:56,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:39:56,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-23 03:39:56,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:56,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-23 03:39:56,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:56,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:56,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:56,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 03:39:56,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:56,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-23 03:39:56,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:56,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:56,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-23 03:39:57,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:39:57,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 03:39:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:39:57,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,117 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:39:57,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 135 [2021-11-23 03:39:57,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,139 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:39:57,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 176 [2021-11-23 03:39:57,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:39:57,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,173 INFO L354 Elim1Store]: treesize reduction 41, result has 24.1 percent of original size [2021-11-23 03:39:57,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 160 [2021-11-23 03:39:57,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 49 [2021-11-23 03:39:57,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,413 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-23 03:39:57,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 204 treesize of output 158 [2021-11-23 03:39:57,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,481 INFO L354 Elim1Store]: treesize reduction 64, result has 24.7 percent of original size [2021-11-23 03:39:57,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 200 treesize of output 205 [2021-11-23 03:39:57,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,502 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:39:57,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 196 treesize of output 190 [2021-11-23 03:39:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:39:57,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 03:39:57,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:39:57,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,670 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:39:57,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 135 [2021-11-23 03:39:57,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:39:57,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,705 INFO L354 Elim1Store]: treesize reduction 41, result has 24.1 percent of original size [2021-11-23 03:39:57,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 164 [2021-11-23 03:39:57,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:57,722 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:39:57,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 157 [2021-11-23 03:39:57,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:39:58,373 INFO L354 Elim1Store]: treesize reduction 122, result has 23.3 percent of original size [2021-11-23 03:39:58,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 398 treesize of output 413 [2021-11-23 03:39:58,769 INFO L354 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2021-11-23 03:39:58,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 354 treesize of output 306 [2021-11-23 03:39:58,854 INFO L354 Elim1Store]: treesize reduction 126, result has 24.1 percent of original size [2021-11-23 03:39:58,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 363 treesize of output 378 [2021-11-23 03:39:58,888 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 03:39:58,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 372 treesize of output 358 [2021-11-23 03:39:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-23 03:39:59,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:59,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:59,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 03:39:59,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:59,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:59,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:59,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:39:59,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-23 03:39:59,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:59,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-23 03:39:59,257 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:40:03,914 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6789#(and (<= 0 |ULTIMATE.start_main_~c1~0#1|) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~item~0#1.base| 0) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~c1~0#1| 1) (or (and (= |ULTIMATE.start_main_~data~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~data~0#1.base|) |ULTIMATE.start_main_~data~0#1.offset|)) (< |ULTIMATE.start_main_~data~0#1.base| |#StackHeapBarrier|) (= (select |#valid| |ULTIMATE.start_main_~data~0#1.base|) 0) (= |ULTIMATE.start_main_~item~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~data~0#1.base|) (+ 4 |ULTIMATE.start_main_~data~0#1.offset|))) (= |ULTIMATE.start_main_~item~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~data~0#1.base|) (+ 4 |ULTIMATE.start_main_~data~0#1.offset|))) (<= (+ 8 |ULTIMATE.start_main_~data~0#1.offset|) (select |#length| |ULTIMATE.start_main_~data~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~data~0#1.base|) |ULTIMATE.start_main_~data~0#1.offset|) |ULTIMATE.start_main_~data~0#1.offset|) (not (= |ULTIMATE.start_main_~data~0#1.base| 0))) (and (<= (+ |ULTIMATE.start_main_~item2~0#1.offset| 8) (select |#length| |ULTIMATE.start_main_~item2~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~item2~0#1.base|) 1) (<= 0 (+ |ULTIMATE.start_main_~item2~0#1.offset| 4)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~item2~0#1.base|) (+ |ULTIMATE.start_main_~item2~0#1.offset| 4)) 1))) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2021-11-23 03:40:03,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:40:03,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:40:03,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2021-11-23 03:40:03,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077467113] [2021-11-23 03:40:03,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:40:03,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-23 03:40:03,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:03,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-23 03:40:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=2831, Unknown=3, NotChecked=222, Total=3422 [2021-11-23 03:40:03,918 INFO L87 Difference]: Start difference. First operand 206 states and 288 transitions. Second operand has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 0 states have call successors, (0), 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 03:40:06,125 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|)))) (let ((.cse2 (<= 1 |c_ULTIMATE.start_main_~c1~0#1|)) (.cse3 (= .cse0 (+ (* 2 |c_ULTIMATE.start_main_~c1~0#1|) 4)))) (and (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= (mod .cse0 (- 2)) 0) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse1 (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_DerPreprocessor_1)))) (or (and (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (< 1 (select (select .cse1 |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0)) (or (and (<= 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (<= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0)) (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_11) (< v_arrayElimCell_12 0))) (< 1 (select (select .cse1 v_arrayElimCell_11) (+ 4 v_arrayElimCell_12)))))) (or (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (forall ((v_prenex_1 Int) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int)) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 1 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_prenex_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))))) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0)) (<= 1 (div (+ (* .cse0 (- 1)) 4) (- 2))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |c_ULTIMATE.start_main_~lItem~0#1.base|) (and .cse2 .cse3)) .cse2 (= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) .cse3))) is different from false [2021-11-23 03:40:08,163 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|)))) (and (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= (mod .cse0 (- 2)) 0) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse1 (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_DerPreprocessor_1)))) (or (and (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (< 1 (select (select .cse1 |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0)) (or (and (<= 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (<= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0)) (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_11) (< v_arrayElimCell_12 0))) (< 1 (select (select .cse1 v_arrayElimCell_11) (+ 4 v_arrayElimCell_12)))))) (or (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (forall ((v_prenex_1 Int) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int)) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 1 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_prenex_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))))) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0)) (<= 1 (div (+ (* .cse0 (- 1)) 4) (- 2))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |c_ULTIMATE.start_main_~lItem~0#1.base|) (and (<= 1 |c_ULTIMATE.start_main_~c1~0#1|) (= .cse0 (+ (* 2 |c_ULTIMATE.start_main_~c1~0#1|) 4)))) (= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0))) is different from false [2021-11-23 03:40:30,431 WARN L227 SmtUtils]: Spent 22.19s on a formula simplification. DAG size of input: 69 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:40:38,894 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (< |c_ULTIMATE.start_main_~item~0#1.offset| 0))) (and (<= 0 |c_ULTIMATE.start_main_~c1~0#1|) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse0 (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_DerPreprocessor_1)))) (or (and (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (< 1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))) (< |c_ULTIMATE.start_main_~item~0#1.offset| 0)) (or (and (<= 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (<= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0)) (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_11) (< v_arrayElimCell_12 0))) (< 1 (select (select .cse0 v_arrayElimCell_11) (+ 4 v_arrayElimCell_12)))))) (or (< 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|) (< |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (forall ((v_prenex_1 Int) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int)) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 1 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4) v_prenex_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))))) .cse1) (or (forall ((v_prenex_1 Int) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_2 Int)) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (< 1 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) 0 v_DerPreprocessor_2) 4 v_prenex_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))))) .cse1))) is different from false [2021-11-23 03:40:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:42,242 INFO L93 Difference]: Finished difference Result 390 states and 534 transitions. [2021-11-23 03:40:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 03:40:42,243 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 0 states have call successors, (0), 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 30 [2021-11-23 03:40:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:42,246 INFO L225 Difference]: With dead ends: 390 [2021-11-23 03:40:42,246 INFO L226 Difference]: Without dead ends: 390 [2021-11-23 03:40:42,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=592, Invalid=4822, Unknown=8, NotChecked=740, Total=6162 [2021-11-23 03:40:42,250 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 350 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 473 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:42,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1144 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1435 Invalid, 0 Unknown, 473 Unchecked, 1.3s Time] [2021-11-23 03:40:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-23 03:40:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 214. [2021-11-23 03:40:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 174 states have (on average 1.7011494252873562) internal successors, (296), 213 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:40:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 296 transitions. [2021-11-23 03:40:42,259 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 296 transitions. Word has length 30 [2021-11-23 03:40:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:42,259 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 296 transitions. [2021-11-23 03:40:42,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 0 states have call successors, (0), 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 03:40:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 296 transitions. [2021-11-23 03:40:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 03:40:42,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:42,261 INFO L514 BasicCegarLoop]: trace histogram [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 03:40:42,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:40:42,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:40:42,476 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:40:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1471455893, now seen corresponding path program 1 times [2021-11-23 03:40:42,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:42,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773578482] [2021-11-23 03:40:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:42,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:42,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773578482] [2021-11-23 03:40:42,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773578482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:42,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:42,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-23 03:40:42,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245730925] [2021-11-23 03:40:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:42,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:40:42,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:42,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:40:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:40:42,876 INFO L87 Difference]: Start difference. First operand 214 states and 296 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 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 03:40:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:44,191 INFO L93 Difference]: Finished difference Result 275 states and 364 transitions. [2021-11-23 03:40:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-23 03:40:44,191 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-23 03:40:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:44,193 INFO L225 Difference]: With dead ends: 275 [2021-11-23 03:40:44,193 INFO L226 Difference]: Without dead ends: 275 [2021-11-23 03:40:44,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 03:40:44,195 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 176 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:44,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 558 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:40:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-23 03:40:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 216. [2021-11-23 03:40:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 176 states have (on average 1.6931818181818181) internal successors, (298), 215 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:40:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 298 transitions. [2021-11-23 03:40:44,202 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 298 transitions. Word has length 31 [2021-11-23 03:40:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:44,203 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 298 transitions. [2021-11-23 03:40:44,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 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 03:40:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 298 transitions. [2021-11-23 03:40:44,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 03:40:44,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:44,204 INFO L514 BasicCegarLoop]: trace histogram [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 03:40:44,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 03:40:44,204 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:40:44,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:44,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1471464771, now seen corresponding path program 1 times [2021-11-23 03:40:44,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:44,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120196227] [2021-11-23 03:40:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:44,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:44,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:44,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120196227] [2021-11-23 03:40:44,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120196227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:44,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:44,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:40:44,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184627740] [2021-11-23 03:40:44,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:44,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:40:44,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:44,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:40:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:40:44,348 INFO L87 Difference]: Start difference. First operand 216 states and 298 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 03:40:44,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:44,628 INFO L93 Difference]: Finished difference Result 242 states and 326 transitions. [2021-11-23 03:40:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:40:44,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-23 03:40:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:44,633 INFO L225 Difference]: With dead ends: 242 [2021-11-23 03:40:44,633 INFO L226 Difference]: Without dead ends: 242 [2021-11-23 03:40:44,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:40:44,634 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 69 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:44,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 244 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:40:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-23 03:40:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 218. [2021-11-23 03:40:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 178 states have (on average 1.6853932584269662) internal successors, (300), 217 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:40:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 300 transitions. [2021-11-23 03:40:44,644 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 300 transitions. Word has length 31 [2021-11-23 03:40:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:44,645 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 300 transitions. [2021-11-23 03:40:44,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 03:40:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 300 transitions. [2021-11-23 03:40:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:40:44,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:44,646 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:40:44,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 03:40:44,646 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:40:44,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1970498725, now seen corresponding path program 1 times [2021-11-23 03:40:44,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:44,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675431095] [2021-11-23 03:40:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:44,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:44,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:44,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675431095] [2021-11-23 03:40:44,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675431095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:40:44,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502995308] [2021-11-23 03:40:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:44,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:40:44,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:40:44,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:40:44,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:40:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:45,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 03:40:45,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:40:45,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 03:40:45,363 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:40:45,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-23 03:40:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:45,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:40:46,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2021-11-23 03:40:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:47,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502995308] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:40:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1392065695] [2021-11-23 03:40:47,650 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-23 03:40:47,650 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:40:47,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:40:47,651 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:40:47,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:40:47,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 03:40:47,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:40:47,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:40:47,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-23 03:40:47,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:47,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-23 03:40:47,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:47,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:47,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:47,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 03:40:47,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-23 03:40:47,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:47,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:47,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-23 03:40:47,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:40:47,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 03:40:47,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:47,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:40:48,007 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:40:48,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 127 [2021-11-23 03:40:48,019 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 03:40:48,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 152 [2021-11-23 03:40:48,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,044 INFO L354 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2021-11-23 03:40:48,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 146 treesize of output 140 [2021-11-23 03:40:48,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 42 [2021-11-23 03:40:48,195 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-23 03:40:48,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 182 treesize of output 154 [2021-11-23 03:40:48,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,210 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:40:48,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 172 [2021-11-23 03:40:48,243 INFO L354 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2021-11-23 03:40:48,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 163 treesize of output 168 [2021-11-23 03:40:48,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 03:40:48,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:40:48,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:40:48,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,349 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:40:48,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 135 [2021-11-23 03:40:48,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:40:48,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,374 INFO L354 Elim1Store]: treesize reduction 41, result has 24.1 percent of original size [2021-11-23 03:40:48,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 164 [2021-11-23 03:40:48,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:48,391 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:40:48,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 157 [2021-11-23 03:40:48,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:40:48,647 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-11-23 03:40:48,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 33 [2021-11-23 03:40:48,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:40:48,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:40:48,939 INFO L354 Elim1Store]: treesize reduction 122, result has 23.3 percent of original size [2021-11-23 03:40:48,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 398 treesize of output 413 [2021-11-23 03:40:49,367 INFO L354 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2021-11-23 03:40:49,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 651 treesize of output 541 [2021-11-23 03:40:49,406 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 03:40:49,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 650 treesize of output 610 [2021-11-23 03:40:49,462 INFO L354 Elim1Store]: treesize reduction 126, result has 24.1 percent of original size [2021-11-23 03:40:49,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 635 treesize of output 630 [2021-11-23 03:40:49,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:49,667 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-23 03:40:49,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 188 treesize of output 175 [2021-11-23 03:40:49,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:49,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:49,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 163 [2021-11-23 03:40:49,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:49,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:49,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:49,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:49,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:49,768 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-23 03:40:49,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 186 [2021-11-23 03:40:49,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:49,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:49,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:40:49,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 180 treesize of output 168 [2021-11-23 03:40:49,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 03:40:49,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 03:40:49,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 03:40:49,872 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 03:40:49,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 03:40:49,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 03:40:49,891 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:40:55,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8707#(and (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~item~0#1.base| 0) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (or (and (<= 0 |ULTIMATE.start_main_~c1~0#1|) (= |ULTIMATE.start_main_~data~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~data~0#1.base|) |ULTIMATE.start_main_~data~0#1.offset|)) (< |ULTIMATE.start_main_~data~0#1.base| |#StackHeapBarrier|) (= (select |#valid| |ULTIMATE.start_main_~data~0#1.base|) 0) (= 0 |ULTIMATE.start_main_~data~0#1.offset|) (= |ULTIMATE.start_main_~item~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~data~0#1.base|) (+ 4 |ULTIMATE.start_main_~data~0#1.offset|))) (= |ULTIMATE.start_main_~item~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~data~0#1.base|) (+ 4 |ULTIMATE.start_main_~data~0#1.offset|))) (<= |ULTIMATE.start_main_~c1~0#1| 1) (<= (+ 8 |ULTIMATE.start_main_~data~0#1.offset|) (select |#length| |ULTIMATE.start_main_~data~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~data~0#1.base|) |ULTIMATE.start_main_~data~0#1.offset|) |ULTIMATE.start_main_~data~0#1.offset|) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1.base| 0)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (<= 0 |ULTIMATE.start_main_~c1~0#1|) (= 0 |ULTIMATE.start_main_~data~0#1.offset|) (< |ULTIMATE.start_main_~item2~0#1.base| |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~c1~0#1| 1) (< (select (select |#memory_int| |ULTIMATE.start_main_~item2~0#1.base|) (+ |ULTIMATE.start_main_~item2~0#1.offset| 4)) 15) (< 1 (select (select |#memory_int| |ULTIMATE.start_main_~item2~0#1.base|) (+ |ULTIMATE.start_main_~item2~0#1.offset| 4))) (= |ULTIMATE.start_main_~item2~0#1.offset| 0) (<= (+ |ULTIMATE.start_main_~item2~0#1.offset| 8) (select |#length| |ULTIMATE.start_main_~item2~0#1.base|)) (= |#NULL.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~item2~0#1.base|) 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2021-11-23 03:40:55,015 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:40:55,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:40:55,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 29 [2021-11-23 03:40:55,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860214984] [2021-11-23 03:40:55,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:40:55,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-23 03:40:55,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-23 03:40:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=3043, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 03:40:55,019 INFO L87 Difference]: Start difference. First operand 218 states and 300 transitions. Second operand has 31 states, 30 states have (on average 3.066666666666667) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 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 03:40:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:55,913 INFO L93 Difference]: Finished difference Result 223 states and 306 transitions. [2021-11-23 03:40:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:40:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.066666666666667) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 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 34 [2021-11-23 03:40:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:55,917 INFO L225 Difference]: With dead ends: 223 [2021-11-23 03:40:55,917 INFO L226 Difference]: Without dead ends: 222 [2021-11-23 03:40:55,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=337, Invalid=3823, Unknown=0, NotChecked=0, Total=4160 [2021-11-23 03:40:55,920 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 35 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:55,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 774 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 587 Invalid, 0 Unknown, 368 Unchecked, 0.5s Time] [2021-11-23 03:40:55,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-23 03:40:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2021-11-23 03:40:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 180 states have (on average 1.6777777777777778) internal successors, (302), 219 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:40:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 302 transitions. [2021-11-23 03:40:55,927 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 302 transitions. Word has length 34 [2021-11-23 03:40:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:55,927 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 302 transitions. [2021-11-23 03:40:55,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.066666666666667) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 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 03:40:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 302 transitions. [2021-11-23 03:40:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:40:55,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:55,928 INFO L514 BasicCegarLoop]: trace histogram [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 03:40:55,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:40:56,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:40:56,151 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:40:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1970500650, now seen corresponding path program 1 times [2021-11-23 03:40:56,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:56,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994287406] [2021-11-23 03:40:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:56,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:56,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:56,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994287406] [2021-11-23 03:40:56,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994287406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:40:56,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966388699] [2021-11-23 03:40:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:56,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:40:56,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:40:56,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:40:56,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:40:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:56,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 03:40:56,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:40:56,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:40:56,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:40:56,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:56,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:56,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:56,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:56,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:56,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:56,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:56,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:56,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:56,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:56,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:40:56,794 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-23 03:40:56,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-11-23 03:40:56,812 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 03:40:56,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:40:56,872 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:40:56,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2021-11-23 03:40:56,882 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 03:40:56,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 58 [2021-11-23 03:40:57,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 72 [2021-11-23 03:40:57,960 INFO L354 Elim1Store]: treesize reduction 61, result has 34.4 percent of original size [2021-11-23 03:40:57,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 104 treesize of output 99 [2021-11-23 03:40:57,996 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-11-23 03:40:57,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 79 [2021-11-23 03:40:58,439 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:40:58,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 41 [2021-11-23 03:40:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:58,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:40:58,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:41:02,267 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~data~0#1.offset| Int) (|v_ULTIMATE.start_main_~item~0#1.offset_90| Int)) (let ((.cse1 (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~lItem~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~lItem~0#1.base|) .cse1 |c_ULTIMATE.start_main_~item~0#1.base|)))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~data~0#1.base|) (+ 4 |ULTIMATE.start_main_~data~0#1.offset|)))) (or (< |v_ULTIMATE.start_main_~item~0#1.offset_90| 0) (= .cse0 |c_ULTIMATE.start_main_~data~0#1.base|) (< 0 |v_ULTIMATE.start_main_~item~0#1.offset_90|) (and (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~lItem~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~lItem~0#1.base|) .cse1 |c_ULTIMATE.start_main_~item~0#1.offset|)) .cse0) |v_ULTIMATE.start_main_~item~0#1.offset_90|) 0) (= (select (select .cse2 .cse0) |v_ULTIMATE.start_main_~item~0#1.offset_90|) 0)) (< |ULTIMATE.start_main_~data~0#1.offset| 0) (< 0 |ULTIMATE.start_main_~data~0#1.offset|)))))) is different from false [2021-11-23 03:41:13,171 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~data~0#1.offset| Int) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (|v_ULTIMATE.start_main_~item~0#1.offset_90| Int)) (let ((.cse1 (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base|) 0 |ULTIMATE.start_main_~lItem~0#1.base|) 4 |c_ULTIMATE.start_main_~item~0#1.base|))) (let ((.cse0 (select .cse1 (+ 4 |ULTIMATE.start_main_~data~0#1.offset|)))) (or (< |v_ULTIMATE.start_main_~item~0#1.offset_90| 0) (and (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base|) 0 0) 4 |c_ULTIMATE.start_main_~item~0#1.offset|)) .cse0) |v_ULTIMATE.start_main_~item~0#1.offset_90|) 0) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| .cse1) .cse0) |v_ULTIMATE.start_main_~item~0#1.offset_90|) 0)) (< 0 |v_ULTIMATE.start_main_~item~0#1.offset_90|) (< |ULTIMATE.start_main_~data~0#1.offset| 0) (< 0 |ULTIMATE.start_main_~data~0#1.offset|) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse0))))) is different from false [2021-11-23 03:41:15,766 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~data~0#1.offset| Int) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_DerPreprocessor_3 Int) (|v_ULTIMATE.start_main_~item~0#1.offset_90| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_3)))) (let ((.cse3 (store (store (select .cse2 |ULTIMATE.start_main_~lItem~0#1.base|) 0 |ULTIMATE.start_main_~lItem~0#1.base|) 4 |c_ULTIMATE.start_main_~item~0#1.base|))) (let ((.cse4 (select .cse3 (+ 4 |ULTIMATE.start_main_~data~0#1.offset|)))) (or (< |v_ULTIMATE.start_main_~item~0#1.offset_90| 0) (and (forall ((v_DerPreprocessor_4 Int)) (= (select (let ((.cse1 (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))) (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) .cse1 v_DerPreprocessor_4)))) (store .cse0 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse0 |ULTIMATE.start_main_~lItem~0#1.base|) 0 0) 4 |c_ULTIMATE.start_main_~item~0#1.offset|))) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) .cse1 v_DerPreprocessor_3)) |ULTIMATE.start_main_~lItem~0#1.base|) 0 |ULTIMATE.start_main_~lItem~0#1.base|) 4 |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~data~0#1.offset|)))) |v_ULTIMATE.start_main_~item~0#1.offset_90|) 0)) (= (select (select (store .cse2 |ULTIMATE.start_main_~lItem~0#1.base| .cse3) .cse4) |v_ULTIMATE.start_main_~item~0#1.offset_90|) 0)) (< 0 |v_ULTIMATE.start_main_~item~0#1.offset_90|) (< |ULTIMATE.start_main_~data~0#1.offset| 0) (< 0 |ULTIMATE.start_main_~data~0#1.offset|) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse4)))))) is different from false [2021-11-23 03:41:17,805 INFO L354 Elim1Store]: treesize reduction 78, result has 30.4 percent of original size [2021-11-23 03:41:17,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37435 treesize of output 23244 [2021-11-23 03:41:18,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23972 treesize of output 23940 [2021-11-23 03:41:18,812 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-23 03:41:18,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23336 treesize of output 21282 [2021-11-23 03:41:18,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62579 treesize of output 58475 [2021-11-23 03:41:21,625 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-23 03:41:21,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499654932] [2021-11-23 03:41:21,628 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-11-23 03:41:21,628 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:41:21,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:41:21,629 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:41:21,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:41:21,678 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@516d0a29 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:388) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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 03:41:21,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:41:21,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-23 03:41:21,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210449931] [2021-11-23 03:41:21,685 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:41:21,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:41:21,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:41:21,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=808, Unknown=6, NotChecked=180, Total=1122 [2021-11-23 03:41:21,687 INFO L87 Difference]: Start difference. First operand 220 states and 302 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 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 03:41:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:41:21,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=128, Invalid=808, Unknown=6, NotChecked=180, Total=1122 [2021-11-23 03:41:21,689 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:21,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:41:21,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:21,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-23 03:41:21,903 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@516d0a29 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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 03:41:21,906 INFO L158 Benchmark]: Toolchain (without parser) took 109843.18ms. Allocated memory was 121.6MB in the beginning and 222.3MB in the end (delta: 100.7MB). Free memory was 83.1MB in the beginning and 68.8MB in the end (delta: 14.4MB). Peak memory consumption was 113.6MB. Max. memory is 16.1GB. [2021-11-23 03:41:21,906 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 121.6MB. Free memory was 91.8MB in the beginning and 91.7MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:41:21,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 696.57ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 87.0MB in the end (delta: -4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:41:21,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.66ms. Allocated memory is still 121.6MB. Free memory was 87.0MB in the beginning and 84.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:41:21,907 INFO L158 Benchmark]: Boogie Preprocessor took 79.24ms. Allocated memory is still 121.6MB. Free memory was 84.8MB in the beginning and 82.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:41:21,907 INFO L158 Benchmark]: RCFGBuilder took 1046.89ms. Allocated memory is still 121.6MB. Free memory was 82.8MB in the beginning and 57.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-23 03:41:21,907 INFO L158 Benchmark]: TraceAbstraction took 107906.17ms. Allocated memory was 121.6MB in the beginning and 222.3MB in the end (delta: 100.7MB). Free memory was 56.7MB in the beginning and 68.8MB in the end (delta: -12.0MB). Peak memory consumption was 90.9MB. Max. memory is 16.1GB. [2021-11-23 03:41:21,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 121.6MB. Free memory was 91.8MB in the beginning and 91.7MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 696.57ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 87.0MB in the end (delta: -4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.66ms. Allocated memory is still 121.6MB. Free memory was 87.0MB in the beginning and 84.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.24ms. Allocated memory is still 121.6MB. Free memory was 84.8MB in the beginning and 82.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1046.89ms. Allocated memory is still 121.6MB. Free memory was 82.8MB in the beginning and 57.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 107906.17ms. Allocated memory was 121.6MB in the beginning and 222.3MB in the end (delta: 100.7MB). Free memory was 56.7MB in the beginning and 68.8MB in the end (delta: -12.0MB). Peak memory consumption was 90.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@516d0a29 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@516d0a29: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 03:41:21,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/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_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0513_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2cd9310cc22b48510db29915dc2047c5968d5424a204e513aea9283dac5ac7bf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:41:24,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:41:24,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:41:24,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:41:24,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:41:24,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:41:24,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:41:24,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:41:24,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:41:24,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:41:24,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:41:24,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:41:24,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:41:24,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:41:24,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:41:24,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:41:24,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:41:24,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:41:24,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:41:24,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:41:24,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:41:24,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:41:24,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:41:24,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:41:24,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:41:24,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:41:24,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:41:24,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:41:24,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:41:24,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:41:24,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:41:24,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:41:24,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:41:24,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:41:24,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:41:24,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:41:24,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:41:24,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:41:24,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:41:24,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:41:24,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:41:24,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 03:41:24,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:41:24,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:41:24,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:41:24,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:41:24,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:41:24,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:41:24,546 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:41:24,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:41:24,547 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:41:24,547 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:41:24,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:41:24,548 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:41:24,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:41:24,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:41:24,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:41:24,551 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:41:24,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:41:24,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:41:24,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:41:24,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:41:24,552 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:41:24,555 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:41:24,559 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:41:24,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:41:24,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:41:24,562 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:41:24,563 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:41:24,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:41:24,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:41:24,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:41:24,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:41:24,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:41:24,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:24,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:41:24,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:41:24,566 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:41:24,566 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:41:24,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:41:24,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:41:24,567 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_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cd9310cc22b48510db29915dc2047c5968d5424a204e513aea9283dac5ac7bf [2021-11-23 03:41:24,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:41:24,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:41:24,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:41:24,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:41:24,993 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:41:24,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-ext-properties/test-0513_1.i [2021-11-23 03:41:25,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data/18c09f836/3bfad039323d4e5fbec7b682bb6ab5ab/FLAGec7933d6a [2021-11-23 03:41:25,755 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:41:25,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/sv-benchmarks/c/list-ext-properties/test-0513_1.i [2021-11-23 03:41:25,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data/18c09f836/3bfad039323d4e5fbec7b682bb6ab5ab/FLAGec7933d6a [2021-11-23 03:41:26,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/data/18c09f836/3bfad039323d4e5fbec7b682bb6ab5ab [2021-11-23 03:41:26,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:41:26,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:41:26,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:26,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:41:26,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:41:26,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435f50cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26, skipping insertion in model container [2021-11-23 03:41:26,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:41:26,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:41:26,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:26,478 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:41:26,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:26,560 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:41:26,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26 WrapperNode [2021-11-23 03:41:26,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:26,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:26,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:41:26,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:41:26,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,617 INFO L137 Inliner]: procedures = 126, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 143 [2021-11-23 03:41:26,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:26,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:41:26,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:41:26,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:41:26,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:41:26,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:41:26,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:41:26,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:41:26,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (1/1) ... [2021-11-23 03:41:26,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:26,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:41:26,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:41:26,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:41:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 03:41:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:41:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:41:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:41:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:41:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:41:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 03:41:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:41:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:41:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:41:26,904 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:41:26,905 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:41:27,634 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:41:27,642 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:41:27,642 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:41:27,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:27 BoogieIcfgContainer [2021-11-23 03:41:27,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:41:27,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:41:27,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:41:27,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:41:27,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:26" (1/3) ... [2021-11-23 03:41:27,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1c1be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:27, skipping insertion in model container [2021-11-23 03:41:27,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:26" (2/3) ... [2021-11-23 03:41:27,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1c1be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:27, skipping insertion in model container [2021-11-23 03:41:27,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:27" (3/3) ... [2021-11-23 03:41:27,653 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0513_1.i [2021-11-23 03:41:27,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:41:27,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-11-23 03:41:27,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:41:27,732 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 03:41:27,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-11-23 03:41:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 78 states have (on average 2.141025641025641) internal successors, (167), 148 states have internal predecessors, (167), 0 states have call successors, (0), 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 03:41:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 03:41:27,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:27,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 03:41:27,773 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:27,780 INFO L85 PathProgramCache]: Analyzing trace with hash 28699948, now seen corresponding path program 1 times [2021-11-23 03:41:27,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:27,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177860381] [2021-11-23 03:41:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:27,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:27,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:27,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:27,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:41:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:27,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:27,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:27,998 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 03:41:27,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:28,045 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 03:41:28,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:28,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177860381] [2021-11-23 03:41:28,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177860381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:28,049 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:28,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:41:28,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245554785] [2021-11-23 03:41:28,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:28,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:28,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:28,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:28,091 INFO L87 Difference]: Start difference. First operand has 149 states, 78 states have (on average 2.141025641025641) internal successors, (167), 148 states have internal predecessors, (167), 0 states have call successors, (0), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:41:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:28,275 INFO L93 Difference]: Finished difference Result 173 states and 189 transitions. [2021-11-23 03:41:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:28,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-23 03:41:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:28,290 INFO L225 Difference]: With dead ends: 173 [2021-11-23 03:41:28,290 INFO L226 Difference]: Without dead ends: 169 [2021-11-23 03:41:28,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:28,296 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 29 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:28,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 276 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:41:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-23 03:41:28,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 159. [2021-11-23 03:41:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 89 states have (on average 2.067415730337079) internal successors, (184), 158 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:41:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 184 transitions. [2021-11-23 03:41:28,345 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 184 transitions. Word has length 5 [2021-11-23 03:41:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:28,346 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 184 transitions. [2021-11-23 03:41:28,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:41:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 184 transitions. [2021-11-23 03:41:28,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 03:41:28,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:28,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 03:41:28,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:28,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:28,566 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash 28700044, now seen corresponding path program 1 times [2021-11-23 03:41:28,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:28,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470691287] [2021-11-23 03:41:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:28,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:28,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:28,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:28,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:41:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:28,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:41:28,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:28,655 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 03:41:28,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:28,675 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 03:41:28,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:28,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470691287] [2021-11-23 03:41:28,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470691287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:28,676 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:28,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:41:28,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091636637] [2021-11-23 03:41:28,677 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:28,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:28,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:28,692 INFO L87 Difference]: Start difference. First operand 159 states and 184 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:41:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:28,985 INFO L93 Difference]: Finished difference Result 160 states and 184 transitions. [2021-11-23 03:41:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:28,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-23 03:41:28,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:28,988 INFO L225 Difference]: With dead ends: 160 [2021-11-23 03:41:28,988 INFO L226 Difference]: Without dead ends: 158 [2021-11-23 03:41:28,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:28,990 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:28,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:41:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-23 03:41:29,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-23 03:41:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 88 states have (on average 2.0681818181818183) internal successors, (182), 157 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:41:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 182 transitions. [2021-11-23 03:41:29,024 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 182 transitions. Word has length 5 [2021-11-23 03:41:29,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:29,025 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 182 transitions. [2021-11-23 03:41:29,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:41:29,026 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 182 transitions. [2021-11-23 03:41:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 03:41:29,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:29,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 03:41:29,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:29,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:29,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:29,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash 28699819, now seen corresponding path program 1 times [2021-11-23 03:41:29,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:29,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565521584] [2021-11-23 03:41:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:29,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:29,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:29,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:29,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:41:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:29,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:41:29,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:29,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:29,380 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 03:41:29,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:29,403 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 03:41:29,404 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:29,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565521584] [2021-11-23 03:41:29,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565521584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:29,409 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:29,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:41:29,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83315911] [2021-11-23 03:41:29,409 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:29,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:29,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:29,413 INFO L87 Difference]: Start difference. First operand 158 states and 182 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:41:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:29,771 INFO L93 Difference]: Finished difference Result 187 states and 211 transitions. [2021-11-23 03:41:29,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:29,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-23 03:41:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:29,775 INFO L225 Difference]: With dead ends: 187 [2021-11-23 03:41:29,775 INFO L226 Difference]: Without dead ends: 187 [2021-11-23 03:41:29,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:29,777 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 84 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:29,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 186 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:41:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-23 03:41:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 157. [2021-11-23 03:41:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 92 states have (on average 1.9673913043478262) internal successors, (181), 156 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 03:41:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 181 transitions. [2021-11-23 03:41:29,791 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 181 transitions. Word has length 5 [2021-11-23 03:41:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:29,791 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 181 transitions. [2021-11-23 03:41:29,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 03:41:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 181 transitions. [2021-11-23 03:41:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 03:41:29,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:29,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 03:41:29,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:30,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:30,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:30,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2021-11-23 03:41:30,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:30,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544339503] [2021-11-23 03:41:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:30,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:30,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:30,006 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:30,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:41:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:30,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:30,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:30,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:30,079 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 03:41:30,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:30,147 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 03:41:30,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:30,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544339503] [2021-11-23 03:41:30,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544339503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:30,148 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:30,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 03:41:30,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888080135] [2021-11-23 03:41:30,148 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:30,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:41:30,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:30,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:41:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:41:30,149 INFO L87 Difference]: Start difference. First operand 157 states and 181 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 03:41:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:30,681 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2021-11-23 03:41:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:41:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 5 [2021-11-23 03:41:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:30,683 INFO L225 Difference]: With dead ends: 153 [2021-11-23 03:41:30,684 INFO L226 Difference]: Without dead ends: 153 [2021-11-23 03:41:30,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 03:41:30,685 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 29 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:30,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 257 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:41:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-23 03:41:30,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-23 03:41:30,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 92 states have (on average 1.8804347826086956) internal successors, (173), 152 states have internal predecessors, (173), 0 states have call successors, (0), 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 03:41:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 173 transitions. [2021-11-23 03:41:30,695 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 173 transitions. Word has length 5 [2021-11-23 03:41:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:30,695 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 173 transitions. [2021-11-23 03:41:30,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 03:41:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 173 transitions. [2021-11-23 03:41:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:41:30,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:30,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:30,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:30,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:30,912 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:30,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1218510505, now seen corresponding path program 1 times [2021-11-23 03:41:30,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:30,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746648699] [2021-11-23 03:41:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:30,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:30,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:30,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:30,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 03:41:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:30,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:30,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:31,019 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 03:41:31,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:31,071 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 03:41:31,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:31,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746648699] [2021-11-23 03:41:31,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746648699] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:31,071 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:31,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:41:31,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669851109] [2021-11-23 03:41:31,072 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:31,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:41:31,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:41:31,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:41:31,073 INFO L87 Difference]: Start difference. First operand 153 states and 173 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 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 03:41:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:31,197 INFO L93 Difference]: Finished difference Result 409 states and 453 transitions. [2021-11-23 03:41:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:41:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 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 11 [2021-11-23 03:41:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:31,202 INFO L225 Difference]: With dead ends: 409 [2021-11-23 03:41:31,202 INFO L226 Difference]: Without dead ends: 409 [2021-11-23 03:41:31,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:41:31,203 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 274 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:31,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 721 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:41:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-23 03:41:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 156. [2021-11-23 03:41:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 95 states have (on average 1.8210526315789475) internal successors, (173), 155 states have internal predecessors, (173), 0 states have call successors, (0), 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 03:41:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2021-11-23 03:41:31,213 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 11 [2021-11-23 03:41:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:31,214 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2021-11-23 03:41:31,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 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 03:41:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2021-11-23 03:41:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:41:31,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:31,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:31,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:31,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:31,426 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash -307770235, now seen corresponding path program 1 times [2021-11-23 03:41:31,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:31,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773303101] [2021-11-23 03:41:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:31,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:31,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:31,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:31,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 03:41:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:31,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:41:31,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:31,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:31,522 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 03:41:31,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:31,544 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 03:41:31,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:31,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773303101] [2021-11-23 03:41:31,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773303101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:31,545 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:31,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:41:31,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739956897] [2021-11-23 03:41:31,546 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:31,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:31,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:31,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:31,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:31,548 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 03:41:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:31,759 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-11-23 03:41:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:31,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-23 03:41:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:31,761 INFO L225 Difference]: With dead ends: 152 [2021-11-23 03:41:31,761 INFO L226 Difference]: Without dead ends: 152 [2021-11-23 03:41:31,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 03:41:31,762 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 23 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:31,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 198 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:41:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-23 03:41:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-23 03:41:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.7789473684210526) internal successors, (169), 151 states have internal predecessors, (169), 0 states have call successors, (0), 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 03:41:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-11-23 03:41:31,769 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 14 [2021-11-23 03:41:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:31,769 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-11-23 03:41:31,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 03:41:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-11-23 03:41:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:41:31,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:31,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:31,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:31,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:31,980 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:31,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:31,980 INFO L85 PathProgramCache]: Analyzing trace with hash -307770234, now seen corresponding path program 1 times [2021-11-23 03:41:31,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:31,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539096126] [2021-11-23 03:41:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:31,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:31,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:31,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:31,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 03:41:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:32,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:32,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:32,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:32,107 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 03:41:32,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:32,185 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 03:41:32,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:32,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539096126] [2021-11-23 03:41:32,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539096126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:32,185 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:32,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 03:41:32,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689426390] [2021-11-23 03:41:32,186 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:32,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:41:32,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:32,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:41:32,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:41:32,187 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:41:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:32,835 INFO L93 Difference]: Finished difference Result 202 states and 222 transitions. [2021-11-23 03:41:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:41:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 03:41:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:32,838 INFO L225 Difference]: With dead ends: 202 [2021-11-23 03:41:32,838 INFO L226 Difference]: Without dead ends: 202 [2021-11-23 03:41:32,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 03:41:32,839 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 120 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:32,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 304 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:41:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-23 03:41:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-11-23 03:41:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 95 states have (on average 1.7473684210526317) internal successors, (166), 148 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 03:41:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 166 transitions. [2021-11-23 03:41:32,845 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 166 transitions. Word has length 14 [2021-11-23 03:41:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:32,845 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 166 transitions. [2021-11-23 03:41:32,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:41:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 166 transitions. [2021-11-23 03:41:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:41:32,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:32,846 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] [2021-11-23 03:41:32,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:33,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:33,057 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 144131949, now seen corresponding path program 1 times [2021-11-23 03:41:33,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:33,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112541835] [2021-11-23 03:41:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:33,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:33,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:33,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:33,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 03:41:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:33,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:33,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:33,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:33,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:33,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:33,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112541835] [2021-11-23 03:41:33,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112541835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:33,233 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:33,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:41:33,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835541819] [2021-11-23 03:41:33,235 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:33,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:41:33,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:33,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:41:33,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:41:33,237 INFO L87 Difference]: Start difference. First operand 149 states and 166 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 03:41:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:33,581 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2021-11-23 03:41:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:41:33,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:41:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:33,583 INFO L225 Difference]: With dead ends: 147 [2021-11-23 03:41:33,583 INFO L226 Difference]: Without dead ends: 147 [2021-11-23 03:41:33,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 1 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 03:41:33,584 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 71 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:33,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 208 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:41:33,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-23 03:41:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2021-11-23 03:41:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 96 states have (on average 1.6666666666666667) internal successors, (160), 141 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:41:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2021-11-23 03:41:33,589 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 20 [2021-11-23 03:41:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:33,589 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2021-11-23 03:41:33,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 03:41:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2021-11-23 03:41:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:41:33,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:33,591 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] [2021-11-23 03:41:33,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:33,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:33,805 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:33,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash 144131950, now seen corresponding path program 1 times [2021-11-23 03:41:33,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:33,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838586202] [2021-11-23 03:41:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:33,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:33,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:33,808 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:33,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 03:41:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:33,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:41:33,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:33,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:34,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:34,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:34,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838586202] [2021-11-23 03:41:34,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838586202] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:34,238 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:34,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:41:34,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993519775] [2021-11-23 03:41:34,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:34,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:41:34,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:41:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:41:34,239 INFO L87 Difference]: Start difference. First operand 142 states and 160 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 03:41:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:35,414 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-11-23 03:41:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:41:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 20 [2021-11-23 03:41:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:35,417 INFO L225 Difference]: With dead ends: 231 [2021-11-23 03:41:35,417 INFO L226 Difference]: Without dead ends: 231 [2021-11-23 03:41:35,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:41:35,418 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 375 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:35,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 241 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 03:41:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-23 03:41:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 141. [2021-11-23 03:41:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 101 states have (on average 1.5742574257425743) internal successors, (159), 140 states have internal predecessors, (159), 0 states have call successors, (0), 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 03:41:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2021-11-23 03:41:35,423 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 20 [2021-11-23 03:41:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:35,424 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2021-11-23 03:41:35,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 03:41:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2021-11-23 03:41:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:41:35,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:35,425 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] [2021-11-23 03:41:35,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:35,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:35,625 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:35,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:35,626 INFO L85 PathProgramCache]: Analyzing trace with hash 144132045, now seen corresponding path program 1 times [2021-11-23 03:41:35,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:35,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752063540] [2021-11-23 03:41:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:35,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:35,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:35,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:35,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 03:41:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:35,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:35,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:35,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:35,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:35,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752063540] [2021-11-23 03:41:35,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752063540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:35,766 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:35,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:41:35,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959941481] [2021-11-23 03:41:35,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:35,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:41:35,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:41:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:41:35,768 INFO L87 Difference]: Start difference. First operand 141 states and 159 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 03:41:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:35,936 INFO L93 Difference]: Finished difference Result 229 states and 255 transitions. [2021-11-23 03:41:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:41:35,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:41:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:35,938 INFO L225 Difference]: With dead ends: 229 [2021-11-23 03:41:35,938 INFO L226 Difference]: Without dead ends: 229 [2021-11-23 03:41:35,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 03:41:35,939 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 122 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:35,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 316 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:41:35,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-23 03:41:35,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 141. [2021-11-23 03:41:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 101 states have (on average 1.5544554455445545) internal successors, (157), 140 states have internal predecessors, (157), 0 states have call successors, (0), 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 03:41:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 157 transitions. [2021-11-23 03:41:35,944 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 157 transitions. Word has length 20 [2021-11-23 03:41:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:35,944 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 157 transitions. [2021-11-23 03:41:35,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 03:41:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 157 transitions. [2021-11-23 03:41:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:41:35,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:35,946 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] [2021-11-23 03:41:35,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:36,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:36,157 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:36,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:36,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1552545070, now seen corresponding path program 1 times [2021-11-23 03:41:36,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:36,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411603822] [2021-11-23 03:41:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:36,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:36,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:36,159 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:36,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 03:41:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:36,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:41:36,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:36,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:36,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:36,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411603822] [2021-11-23 03:41:36,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411603822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:36,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:36,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 03:41:36,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898289412] [2021-11-23 03:41:36,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:36,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:41:36,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:41:36,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:41:36,801 INFO L87 Difference]: Start difference. First operand 141 states and 157 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 03:41:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:36,820 INFO L93 Difference]: Finished difference Result 166 states and 187 transitions. [2021-11-23 03:41:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:41:36,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-11-23 03:41:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:36,822 INFO L225 Difference]: With dead ends: 166 [2021-11-23 03:41:36,822 INFO L226 Difference]: Without dead ends: 166 [2021-11-23 03:41:36,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:41:36,823 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 25 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:36,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 387 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2021-11-23 03:41:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-23 03:41:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 151. [2021-11-23 03:41:36,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 150 states have internal predecessors, (169), 0 states have call successors, (0), 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 03:41:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2021-11-23 03:41:36,829 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 25 [2021-11-23 03:41:36,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:36,829 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2021-11-23 03:41:36,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 03:41:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2021-11-23 03:41:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:41:36,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:36,831 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] [2021-11-23 03:41:36,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:37,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:37,042 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1553684105, now seen corresponding path program 1 times [2021-11-23 03:41:37,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:37,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787403516] [2021-11-23 03:41:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:37,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:37,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:37,045 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:37,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 03:41:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:37,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:41:37,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:37,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:37,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:41:37,293 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 03:41:37,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:41:37,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-11-23 03:41:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:37,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:39,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-23 03:41:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:39,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:39,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787403516] [2021-11-23 03:41:39,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787403516] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:39,662 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:39,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-23 03:41:39,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074852682] [2021-11-23 03:41:39,663 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:39,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:41:39,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:41:39,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2021-11-23 03:41:39,664 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 03:41:40,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:40,343 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2021-11-23 03:41:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:41:40,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 25 [2021-11-23 03:41:40,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:40,345 INFO L225 Difference]: With dead ends: 166 [2021-11-23 03:41:40,345 INFO L226 Difference]: Without dead ends: 166 [2021-11-23 03:41:40,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=30, Invalid=79, Unknown=1, NotChecked=0, Total=110 [2021-11-23 03:41:40,346 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 21 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:40,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 421 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 147 Unchecked, 0.6s Time] [2021-11-23 03:41:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-23 03:41:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2021-11-23 03:41:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 115 states have (on average 1.5130434782608695) internal successors, (174), 154 states have internal predecessors, (174), 0 states have call successors, (0), 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 03:41:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 174 transitions. [2021-11-23 03:41:40,353 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 174 transitions. Word has length 25 [2021-11-23 03:41:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:40,353 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 174 transitions. [2021-11-23 03:41:40,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 03:41:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 174 transitions. [2021-11-23 03:41:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:41:40,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:40,360 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] [2021-11-23 03:41:40,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:40,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:40,573 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1553684104, now seen corresponding path program 1 times [2021-11-23 03:41:40,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:40,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778881266] [2021-11-23 03:41:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:40,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:40,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:40,574 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 03:41:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:40,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:41:40,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:40,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:41:40,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:41:40,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:41:40,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:41:41,021 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:41:41,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2021-11-23 03:41:41,034 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:41:41,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2021-11-23 03:41:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:41,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:41,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-23 03:41:41,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-23 03:41:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:41,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:41,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778881266] [2021-11-23 03:41:41,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778881266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:41,401 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:41,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-23 03:41:41,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456355112] [2021-11-23 03:41:41,402 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:41,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:41:41,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:41:41,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:41:41,403 INFO L87 Difference]: Start difference. First operand 155 states and 174 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 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 03:41:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:41,846 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2021-11-23 03:41:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:41:41,847 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 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 25 [2021-11-23 03:41:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:41,848 INFO L225 Difference]: With dead ends: 178 [2021-11-23 03:41:41,849 INFO L226 Difference]: Without dead ends: 178 [2021-11-23 03:41:41,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:41:41,850 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 72 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:41,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 507 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 52 Unchecked, 0.4s Time] [2021-11-23 03:41:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-23 03:41:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 151. [2021-11-23 03:41:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.5135135135135136) internal successors, (168), 150 states have internal predecessors, (168), 0 states have call successors, (0), 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 03:41:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 168 transitions. [2021-11-23 03:41:41,855 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 168 transitions. Word has length 25 [2021-11-23 03:41:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:41,856 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 168 transitions. [2021-11-23 03:41:41,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 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 03:41:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 168 transitions. [2021-11-23 03:41:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:41:41,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:41,857 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] [2021-11-23 03:41:41,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:42,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:42,072 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash 632857942, now seen corresponding path program 1 times [2021-11-23 03:41:42,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:42,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011184385] [2021-11-23 03:41:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:42,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:42,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:42,075 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:42,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 03:41:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:42,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 03:41:42,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:42,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:42,305 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:41:42,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 03:41:42,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 03:41:42,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 03:41:43,013 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-23 03:41:43,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 44 [2021-11-23 03:41:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:43,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:45,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 64 [2021-11-23 03:41:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:49,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:49,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011184385] [2021-11-23 03:41:49,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011184385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:49,502 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:49,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-23 03:41:49,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132936292] [2021-11-23 03:41:49,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:49,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:41:49,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:49,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:41:49,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=136, Unknown=3, NotChecked=0, Total=182 [2021-11-23 03:41:49,504 INFO L87 Difference]: Start difference. First operand 151 states and 168 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 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 03:41:50,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:50,017 INFO L93 Difference]: Finished difference Result 154 states and 173 transitions. [2021-11-23 03:41:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:41:50,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-11-23 03:41:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:50,019 INFO L225 Difference]: With dead ends: 154 [2021-11-23 03:41:50,019 INFO L226 Difference]: Without dead ends: 154 [2021-11-23 03:41:50,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=43, Invalid=136, Unknown=3, NotChecked=0, Total=182 [2021-11-23 03:41:50,020 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 5 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 350 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:50,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 576 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 350 Unchecked, 0.5s Time] [2021-11-23 03:41:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-23 03:41:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-23 03:41:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 114 states have (on average 1.5175438596491229) internal successors, (173), 153 states have internal predecessors, (173), 0 states have call successors, (0), 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 03:41:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2021-11-23 03:41:50,025 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 28 [2021-11-23 03:41:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:50,025 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2021-11-23 03:41:50,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 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 03:41:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2021-11-23 03:41:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:41:50,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:50,027 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] [2021-11-23 03:41:50,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:50,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:50,228 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash 632857943, now seen corresponding path program 1 times [2021-11-23 03:41:50,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:50,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135861589] [2021-11-23 03:41:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:50,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:50,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:50,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 03:41:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:50,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:41:50,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:50,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:50,495 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:41:50,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 03:41:50,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:41:50,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 03:41:50,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-23 03:41:50,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-23 03:41:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:50,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:51,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-23 03:41:51,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:51,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:51,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:51,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:51,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:51,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135861589] [2021-11-23 03:41:51,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135861589] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:51,847 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:51,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 03:41:51,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325837682] [2021-11-23 03:41:51,848 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:51,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:41:51,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:51,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:41:51,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:41:51,852 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 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 03:41:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:54,788 INFO L93 Difference]: Finished difference Result 256 states and 285 transitions. [2021-11-23 03:41:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:41:54,789 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-11-23 03:41:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:54,790 INFO L225 Difference]: With dead ends: 256 [2021-11-23 03:41:54,790 INFO L226 Difference]: Without dead ends: 256 [2021-11-23 03:41:54,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:41:54,792 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 221 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:54,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 460 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 575 Invalid, 0 Unknown, 3 Unchecked, 2.6s Time] [2021-11-23 03:41:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-23 03:41:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 178. [2021-11-23 03:41:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 138 states have (on average 1.4782608695652173) internal successors, (204), 177 states have internal predecessors, (204), 0 states have call successors, (0), 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 03:41:54,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 204 transitions. [2021-11-23 03:41:54,798 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 204 transitions. Word has length 28 [2021-11-23 03:41:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:54,799 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 204 transitions. [2021-11-23 03:41:54,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 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 03:41:54,799 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 204 transitions. [2021-11-23 03:41:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 03:41:54,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:54,800 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] [2021-11-23 03:41:54,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:55,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:55,001 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1856240964, now seen corresponding path program 1 times [2021-11-23 03:41:55,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889455982] [2021-11-23 03:41:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:55,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:55,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:55,002 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:55,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 03:41:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:55,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:41:55,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:55,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 03:41:55,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-23 03:41:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:55,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:55,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-23 03:41:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:55,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:55,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889455982] [2021-11-23 03:41:55,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889455982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:55,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:55,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 9 [2021-11-23 03:41:55,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490841887] [2021-11-23 03:41:55,581 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:55,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:41:55,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:55,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:41:55,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:41:55,582 INFO L87 Difference]: Start difference. First operand 178 states and 204 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 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 03:41:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:56,498 INFO L93 Difference]: Finished difference Result 205 states and 232 transitions. [2021-11-23 03:41:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:41:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 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 29 [2021-11-23 03:41:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:56,500 INFO L225 Difference]: With dead ends: 205 [2021-11-23 03:41:56,501 INFO L226 Difference]: Without dead ends: 205 [2021-11-23 03:41:56,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:41:56,502 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 90 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:56,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 510 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:41:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-23 03:41:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 178. [2021-11-23 03:41:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 138 states have (on average 1.4710144927536233) internal successors, (203), 177 states have internal predecessors, (203), 0 states have call successors, (0), 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 03:41:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2021-11-23 03:41:56,510 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 29 [2021-11-23 03:41:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:56,511 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2021-11-23 03:41:56,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 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 03:41:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2021-11-23 03:41:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 03:41:56,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:56,512 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] [2021-11-23 03:41:56,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:56,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:56,725 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1708867945, now seen corresponding path program 1 times [2021-11-23 03:41:56,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:56,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227108576] [2021-11-23 03:41:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:56,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:56,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:56,727 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:56,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 03:41:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:56,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:56,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:41:56,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:56,920 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 03:41:56,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-23 03:41:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:41:56,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:56,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227108576] [2021-11-23 03:41:56,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227108576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:56,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:56,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:41:56,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410148349] [2021-11-23 03:41:56,969 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:56,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:41:56,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:41:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:41:56,971 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 03:41:57,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:57,539 INFO L93 Difference]: Finished difference Result 220 states and 247 transitions. [2021-11-23 03:41:57,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:41:57,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-23 03:41:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:57,542 INFO L225 Difference]: With dead ends: 220 [2021-11-23 03:41:57,542 INFO L226 Difference]: Without dead ends: 220 [2021-11-23 03:41:57,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 2 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 03:41:57,543 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 77 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:57,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 266 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:41:57,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-23 03:41:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 177. [2021-11-23 03:41:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 141 states have (on average 1.4609929078014185) internal successors, (206), 176 states have internal predecessors, (206), 0 states have call successors, (0), 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 03:41:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 206 transitions. [2021-11-23 03:41:57,550 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 206 transitions. Word has length 30 [2021-11-23 03:41:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:57,550 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 206 transitions. [2021-11-23 03:41:57,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 03:41:57,550 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 206 transitions. [2021-11-23 03:41:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 03:41:57,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:57,551 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] [2021-11-23 03:41:57,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:57,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:41:57,763 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:41:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1708867944, now seen corresponding path program 1 times [2021-11-23 03:41:57,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:41:57,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186475868] [2021-11-23 03:41:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:57,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:41:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:41:57,766 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:41:57,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 03:41:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:57,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 03:41:57,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:57,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:41:58,037 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:41:58,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 03:41:58,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 03:41:58,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:41:58,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-23 03:41:58,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-23 03:41:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:58,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:59,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2021-11-23 03:41:59,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 106 [2021-11-23 03:41:59,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-23 03:41:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:59,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:41:59,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186475868] [2021-11-23 03:41:59,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186475868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:59,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:59,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-23 03:41:59,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694638427] [2021-11-23 03:41:59,971 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:59,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:41:59,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:41:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:41:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:41:59,973 INFO L87 Difference]: Start difference. First operand 177 states and 206 transitions. Second operand has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 14 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 03:42:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:04,254 INFO L93 Difference]: Finished difference Result 289 states and 325 transitions. [2021-11-23 03:42:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:42:04,256 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 14 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 30 [2021-11-23 03:42:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:04,257 INFO L225 Difference]: With dead ends: 289 [2021-11-23 03:42:04,257 INFO L226 Difference]: Without dead ends: 289 [2021-11-23 03:42:04,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:42:04,259 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 236 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:04,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 849 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 967 Invalid, 0 Unknown, 172 Unchecked, 3.8s Time] [2021-11-23 03:42:04,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-23 03:42:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 184. [2021-11-23 03:42:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 149 states have (on average 1.429530201342282) internal successors, (213), 183 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:42:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 213 transitions. [2021-11-23 03:42:04,266 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 213 transitions. Word has length 30 [2021-11-23 03:42:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:04,266 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 213 transitions. [2021-11-23 03:42:04,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 14 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 03:42:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 213 transitions. [2021-11-23 03:42:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:42:04,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:04,267 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] [2021-11-23 03:42:04,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 03:42:04,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:42:04,480 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:42:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1634108423, now seen corresponding path program 1 times [2021-11-23 03:42:04,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:42:04,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598611167] [2021-11-23 03:42:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:04,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:42:04,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:42:04,483 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:42:04,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 03:42:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:04,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:42:04,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:42:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:42:04,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:42:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:42:04,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:42:04,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598611167] [2021-11-23 03:42:04,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598611167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:04,679 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:04,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:42:04,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857538370] [2021-11-23 03:42:04,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:04,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:42:04,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:42:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:42:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:04,681 INFO L87 Difference]: Start difference. First operand 184 states and 213 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 03:42:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:04,695 INFO L93 Difference]: Finished difference Result 186 states and 215 transitions. [2021-11-23 03:42:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:42:04,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-23 03:42:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:04,697 INFO L225 Difference]: With dead ends: 186 [2021-11-23 03:42:04,698 INFO L226 Difference]: Without dead ends: 186 [2021-11-23 03:42:04,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 03:42:04,699 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:04,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:42:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-23 03:42:04,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2021-11-23 03:42:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 150 states have (on average 1.4266666666666667) internal successors, (214), 184 states have internal predecessors, (214), 0 states have call successors, (0), 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 03:42:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2021-11-23 03:42:04,705 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 35 [2021-11-23 03:42:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:04,706 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2021-11-23 03:42:04,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 03:42:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2021-11-23 03:42:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:42:04,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:04,708 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:42:04,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 03:42:04,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:42:04,915 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:42:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1634115376, now seen corresponding path program 1 times [2021-11-23 03:42:04,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:42:04,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052980591] [2021-11-23 03:42:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:04,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:42:04,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:42:04,917 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:42:04,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 03:42:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:05,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 03:42:05,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:42:05,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:42:05,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:42:05,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:42:05,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 03:42:05,333 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 03:42:05,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-23 03:42:05,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:42:05,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-23 03:42:05,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:42:05,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-11-23 03:42:05,873 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:42:05,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-11-23 03:42:05,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:42:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:06,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:42:06,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-23 03:42:06,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 127 [2021-11-23 03:42:06,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 165 [2021-11-23 03:42:17,382 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (bvsgt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv1 32)))) is different from false [2021-11-23 03:42:19,432 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (bvsgt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_2) (_ bv4 32) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv1 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:42:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:19,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:42:19,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052980591] [2021-11-23 03:42:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052980591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:42:19,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [698325941] [2021-11-23 03:42:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:19,676 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:42:19,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:42:19,677 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:42:19,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-23 03:42:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:19,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 03:42:19,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:42:19,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:42:19,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:42:20,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:42:20,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:42:20,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:42:20,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:42:20,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:42:20,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:42:20,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:42:20,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:42:20,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:42:20,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:42:20,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:42:20,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 03:42:20,334 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 03:42:20,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:42:20,386 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-23 03:42:20,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-11-23 03:42:20,692 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:42:20,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2021-11-23 03:42:20,701 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 03:42:20,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 58 [2021-11-23 03:42:21,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 71 [2021-11-23 03:42:22,136 INFO L354 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2021-11-23 03:42:22,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 68 [2021-11-23 03:42:22,162 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-23 03:42:22,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 42 [2021-11-23 03:42:22,178 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:42:22,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2021-11-23 03:42:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:22,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:42:22,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-23 03:42:26,219 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|))) (and (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_~lItem~0#1.base|) .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| |c_ULTIMATE.start_main_~lItem~0#1.offset|) .cse0 |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)))))) is different from false [2021-11-23 03:42:28,335 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (and (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) (_ bv0 32)) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:42:30,432 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_3)))) (store .cse0 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse0 |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) (_ bv0 32)) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))) (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_4)))) (store .cse1 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse1 |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:42:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:30,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [698325941] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:42:30,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693856838] [2021-11-23 03:42:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:30,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:42:30,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:42:30,938 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:42:30,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-23 03:42:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:31,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 03:42:31,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:42:31,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:42:31,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:42:31,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:42:31,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 03:42:31,236 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 03:42:31,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-23 03:42:31,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:42:31,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-23 03:42:31,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:42:31,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-11-23 03:42:31,488 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:42:31,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-11-23 03:42:31,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:42:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:31,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:42:31,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-23 03:42:31,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 127 [2021-11-23 03:42:31,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 165 [2021-11-23 03:42:35,853 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (bvsgt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_10) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv1 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:42:37,914 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (bvsgt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_10) (_ bv4 32) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv1 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:42:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:37,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693856838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:42:37,999 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:42:37,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 14, 15, 15, 16] total 53 [2021-11-23 03:42:37,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465226437] [2021-11-23 03:42:37,999 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:42:38,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 03:42:38,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:42:38,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 03:42:38,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1920, Unknown=9, NotChecked=658, Total=2756 [2021-11-23 03:42:38,002 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand has 53 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:42:40,303 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_3)))) (store .cse0 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse0 |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) (_ bv0 32)) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))) (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_4)))) (store .cse1 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse1 |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (= (_ bv1 32) |c_ULTIMATE.start_main_~c1~0#1|)) is different from false [2021-11-23 03:42:42,328 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (bvsgt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_2) (_ bv4 32) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv1 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv6 32)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (bvsgt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_10) (_ bv4 32) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv1 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (and (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) (_ bv0 32)) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|)))) is different from false [2021-11-23 03:42:44,347 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (bvsgt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_2) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv1 32)))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (bvsgt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_10) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv1 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv6 32)) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (= |c_ULTIMATE.start_main_~lItem~0#1.offset| (_ bv0 32)) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|))) (and (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_~lItem~0#1.base|) .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| |c_ULTIMATE.start_main_~lItem~0#1.offset|) .cse0 |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))))))) is different from false [2021-11-23 03:42:48,659 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~data~0#1.base|)) (.cse6 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~data~0#1.base|))) (and (= |c_ULTIMATE.start_main_~data~0#1.offset| (_ bv0 32)) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_3)))) (store .cse0 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse0 |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) (_ bv0 32)) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))) (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_4)))) (store .cse1 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse1 |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (= (_ bv0 32) (select .cse2 (_ bv4 32))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (let ((.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))) (let ((.cse3 (select .cse6 .cse5))) (or (= .cse3 |c_ULTIMATE.start_main_~data~0#1.base|) (let ((.cse4 (select .cse2 .cse5))) (and (= (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4) (_ bv0 32)) (= (select (select |c_#memory_$Pointer$.base| .cse3) .cse4) (_ bv0 32))))))) (let ((.cse7 (select .cse6 (_ bv4 32)))) (or (= (_ bv6 32) (select (select |c_#memory_int| .cse7) (_ bv4 32))) (= .cse7 |c_ULTIMATE.start_main_~data~0#1.base|))))) is different from false [2021-11-23 03:42:50,761 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_3)))) (store .cse0 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse0 |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) (_ bv0 32)) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))) (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_4)))) (store .cse1 |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select .cse1 |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) is different from false [2021-11-23 03:42:54,309 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (and (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) (_ bv0 32)) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|)))) is different from false [2021-11-23 03:42:56,501 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (= |c_ULTIMATE.start_main_~lItem~0#1.offset| (_ bv0 32)) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|))) (and (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_~lItem~0#1.base|) .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32)) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| |c_ULTIMATE.start_main_~lItem~0#1.offset|) .cse0 |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))))))) is different from false [2021-11-23 03:43:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:00,655 INFO L93 Difference]: Finished difference Result 199 states and 227 transitions. [2021-11-23 03:43:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 03:43:00,656 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 03:43:00,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:00,657 INFO L225 Difference]: With dead ends: 199 [2021-11-23 03:43:00,657 INFO L226 Difference]: Without dead ends: 199 [2021-11-23 03:43:00,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=378, Invalid=3444, Unknown=16, NotChecked=1862, Total=5700 [2021-11-23 03:43:00,661 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 185 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 870 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:00,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 2051 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1288 Invalid, 0 Unknown, 870 Unchecked, 4.6s Time] [2021-11-23 03:43:00,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-23 03:43:00,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 188. [2021-11-23 03:43:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 153 states have (on average 1.4183006535947713) internal successors, (217), 187 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 217 transitions. [2021-11-23 03:43:00,668 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 217 transitions. Word has length 35 [2021-11-23 03:43:00,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:00,669 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 217 transitions. [2021-11-23 03:43:00,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 217 transitions. [2021-11-23 03:43:00,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:43:00,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:00,670 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] [2021-11-23 03:43:00,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:00,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:01,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:01,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:43:01,285 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:43:01,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1760156246, now seen corresponding path program 1 times [2021-11-23 03:43:01,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:43:01,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238074378] [2021-11-23 03:43:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:01,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:43:01,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:43:01,287 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:43:01,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 03:43:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:01,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 03:43:01,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:01,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 03:43:01,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 03:43:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:01,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:02,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-11-23 03:43:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:02,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:43:02,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238074378] [2021-11-23 03:43:02,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238074378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:02,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:02,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 13 [2021-11-23 03:43:02,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720489826] [2021-11-23 03:43:02,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:02,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:43:02,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:43:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:43:02,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:43:02,379 INFO L87 Difference]: Start difference. First operand 188 states and 217 transitions. Second operand has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 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 03:43:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:04,640 INFO L93 Difference]: Finished difference Result 231 states and 262 transitions. [2021-11-23 03:43:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 03:43:04,641 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 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 37 [2021-11-23 03:43:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:04,643 INFO L225 Difference]: With dead ends: 231 [2021-11-23 03:43:04,643 INFO L226 Difference]: Without dead ends: 231 [2021-11-23 03:43:04,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:43:04,645 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 278 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:04,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 777 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:43:04,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-23 03:43:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 188. [2021-11-23 03:43:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 153 states have (on average 1.411764705882353) internal successors, (216), 187 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 216 transitions. [2021-11-23 03:43:04,652 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 216 transitions. Word has length 37 [2021-11-23 03:43:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:04,652 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 216 transitions. [2021-11-23 03:43:04,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 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 03:43:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 216 transitions. [2021-11-23 03:43:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 03:43:04,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:04,654 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] [2021-11-23 03:43:04,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:04,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:43:04,859 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:43:04,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1269946079, now seen corresponding path program 1 times [2021-11-23 03:43:04,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:43:04,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612923284] [2021-11-23 03:43:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:04,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:43:04,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:43:04,863 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:43:04,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 03:43:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:05,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 03:43:05,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:05,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:43:05,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:43:05,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:43:05,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:43:05,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 03:43:05,415 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 03:43:05,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-23 03:43:05,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-23 03:43:05,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:43:05,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-11-23 03:43:05,997 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:43:05,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-11-23 03:43:06,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:43:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:06,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:06,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-23 03:43:06,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 127 [2021-11-23 03:43:06,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 165 [2021-11-23 03:43:14,833 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_12) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)))) is different from false [2021-11-23 03:43:16,916 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_12) (_ bv4 32) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:43:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:17,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:43:17,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612923284] [2021-11-23 03:43:17,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612923284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:43:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1379327033] [2021-11-23 03:43:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:17,139 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:43:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:43:17,140 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:43:17,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-23 03:43:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:17,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 03:43:17,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:17,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:43:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:43:17,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:43:17,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:43:17,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 03:43:17,556 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 03:43:17,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-23 03:43:17,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:43:17,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:43:17,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2021-11-23 03:43:17,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-11-23 03:43:18,063 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:43:18,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-11-23 03:43:18,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:43:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:18,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:18,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-23 03:43:19,197 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 03:43:19,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 157 [2021-11-23 03:43:19,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 195 [2021-11-23 03:43:30,098 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_14) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:43:32,154 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_14) (_ bv4 32) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:43:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:32,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1379327033] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:43:32,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784435167] [2021-11-23 03:43:32,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:32,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:43:32,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:32,246 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:43:32,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 03:43:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:32,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 03:43:32,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:32,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:43:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:43:32,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:43:32,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 03:43:32,504 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 03:43:32,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-23 03:43:32,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:43:32,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-23 03:43:32,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:43:32,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-11-23 03:43:32,789 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:43:32,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-11-23 03:43:32,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 03:43:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:32,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:32,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-23 03:43:33,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 127 [2021-11-23 03:43:33,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 165 [2021-11-23 03:43:39,509 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_16) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:43:41,568 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_16) (_ bv4 32) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) is different from false [2021-11-23 03:43:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:41,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784435167] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:43:41,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:43:41,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 19, 20, 15, 16] total 41 [2021-11-23 03:43:41,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684124832] [2021-11-23 03:43:41,651 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:43:41,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-23 03:43:41,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:43:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-23 03:43:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1068, Unknown=8, NotChecked=426, Total=1640 [2021-11-23 03:43:41,653 INFO L87 Difference]: Start difference. First operand 188 states and 216 transitions. Second operand has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 0 states have call successors, (0), 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 03:43:44,378 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_12) (_ bv4 32) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv6 32)) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_16) (_ bv4 32) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= (_ bv1 32) |c_ULTIMATE.start_main_~c1~0#1|) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) (_ bv0 32) v_DerPreprocessor_14) (_ bv4 32) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|)))) is different from false [2021-11-23 03:43:46,396 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv6 32)) (= |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (= |c_ULTIMATE.start_main_~lItem~0#1.offset| (_ bv0 32)) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_16) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_12) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (or (bvslt (select (select (store |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~lItem~0#1.base|) |c_ULTIMATE.start_main_~lItem~0#1.offset| v_DerPreprocessor_14) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~lItem~0#1.offset|) v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv15 32)) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|)))) is different from false [2021-11-23 03:43:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:49,937 INFO L93 Difference]: Finished difference Result 193 states and 219 transitions. [2021-11-23 03:43:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 03:43:49,939 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 0 states have call successors, (0), 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 38 [2021-11-23 03:43:49,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:49,940 INFO L225 Difference]: With dead ends: 193 [2021-11-23 03:43:49,940 INFO L226 Difference]: Without dead ends: 193 [2021-11-23 03:43:49,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=221, Invalid=1607, Unknown=10, NotChecked=712, Total=2550 [2021-11-23 03:43:49,942 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 48 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 667 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:49,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1867 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 983 Invalid, 0 Unknown, 667 Unchecked, 3.4s Time] [2021-11-23 03:43:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-23 03:43:49,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2021-11-23 03:43:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 153 states have (on average 1.4052287581699345) internal successors, (215), 187 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2021-11-23 03:43:49,948 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 38 [2021-11-23 03:43:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:49,949 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2021-11-23 03:43:49,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 0 states have call successors, (0), 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 03:43:49,949 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2021-11-23 03:43:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 03:43:49,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:49,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:49,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:50,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-23 03:43:50,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:50,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:43:50,554 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:43:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1659771156, now seen corresponding path program 1 times [2021-11-23 03:43:50,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:43:50,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286929607] [2021-11-23 03:43:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:50,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:43:50,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:43:50,557 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:43:50,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 03:43:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:50,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:43:50,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:50,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:50,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:43:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286929607] [2021-11-23 03:43:50,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286929607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:43:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [27456570] [2021-11-23 03:43:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:50,991 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:43:50,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:43:50,992 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:43:50,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-23 03:43:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:51,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:43:51,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 03:43:51,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 03:43:51,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [27456570] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:43:51,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314219599] [2021-11-23 03:43:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:51,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:43:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:51,377 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:43:51,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-23 03:43:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:51,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:43:51,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:51,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:51,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314219599] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:43:51,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:43:51,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3, 3, 5, 5] total 10 [2021-11-23 03:43:51,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800009462] [2021-11-23 03:43:51,686 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:43:51,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:43:51,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:43:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:43:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:43:51,688 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 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 03:43:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:53,504 INFO L93 Difference]: Finished difference Result 783 states and 888 transitions. [2021-11-23 03:43:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 03:43:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 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 39 [2021-11-23 03:43:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:53,510 INFO L225 Difference]: With dead ends: 783 [2021-11-23 03:43:53,510 INFO L226 Difference]: Without dead ends: 783 [2021-11-23 03:43:53,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:43:53,511 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1728 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:53,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1728 Valid, 888 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 03:43:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-23 03:43:53,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 199. [2021-11-23 03:43:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 164 states have (on average 1.353658536585366) internal successors, (222), 198 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2021-11-23 03:43:53,523 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 39 [2021-11-23 03:43:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:53,523 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2021-11-23 03:43:53,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 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 03:43:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2021-11-23 03:43:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:43:53,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:53,524 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] [2021-11-23 03:43:53,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:53,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:53,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:54,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:43:54,144 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:43:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash 793988848, now seen corresponding path program 1 times [2021-11-23 03:43:54,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:43:54,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657224320] [2021-11-23 03:43:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:54,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:43:54,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:43:54,146 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:43:54,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 03:43:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:54,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 03:43:54,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:54,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-11-23 03:43:54,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2021-11-23 03:43:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:57,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:57,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2021-11-23 03:44:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:44:37,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:44:37,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657224320] [2021-11-23 03:44:37,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657224320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:44:37,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641416394] [2021-11-23 03:44:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:37,083 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:44:37,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:44:37,084 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:44:37,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-23 03:44:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:37,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 03:44:37,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:44:41,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-11-23 03:44:42,343 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:44:42,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 31 [2021-11-23 03:44:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:44:48,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:44:51,111 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 03:44:51,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 146 [2021-11-23 03:45:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:45:29,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1641416394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:45:29,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040707710] [2021-11-23 03:45:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:29,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:29,674 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:45:29,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-23 03:45:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:29,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 03:45:29,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:45:29,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-11-23 03:45:30,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2021-11-23 03:45:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:45:30,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:45:31,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 116 [2021-11-23 03:46:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:08,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040707710] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:46:08,535 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:46:08,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14, 14, 12, 12] total 48 [2021-11-23 03:46:08,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075187096] [2021-11-23 03:46:08,535 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:46:08,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-23 03:46:08,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:46:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-23 03:46:08,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2065, Unknown=46, NotChecked=0, Total=2352 [2021-11-23 03:46:08,538 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 49 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 49 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:13,159 INFO L93 Difference]: Finished difference Result 220 states and 243 transitions. [2021-11-23 03:46:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 03:46:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 49 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-23 03:46:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:13,161 INFO L225 Difference]: With dead ends: 220 [2021-11-23 03:46:13,161 INFO L226 Difference]: Without dead ends: 197 [2021-11-23 03:46:13,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 161 SyntacticMatches, 34 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 131.3s TimeCoverageRelationStatistics Valid=458, Invalid=3528, Unknown=46, NotChecked=0, Total=4032 [2021-11-23 03:46:13,163 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 277 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 636 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:13,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 1155 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 848 Invalid, 0 Unknown, 636 Unchecked, 2.5s Time] [2021-11-23 03:46:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-23 03:46:13,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2021-11-23 03:46:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 143 states have (on average 1.3986013986013985) internal successors, (200), 177 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2021-11-23 03:46:13,175 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 41 [2021-11-23 03:46:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:13,175 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2021-11-23 03:46:13,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 49 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2021-11-23 03:46:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:46:13,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:13,176 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:13,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-23 03:46:13,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-11-23 03:46:13,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-23 03:46:13,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:13,795 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:46:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1495424434, now seen corresponding path program 1 times [2021-11-23 03:46:13,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:46:13,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345156479] [2021-11-23 03:46:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:13,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:46:13,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:46:13,797 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:46:13,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-23 03:46:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:13,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:46:13,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:14,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:46:14,067 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:46:14,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-23 03:46:14,288 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 03:46:14,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-23 03:46:14,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:46:14,645 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 03:46:14,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 60 [2021-11-23 03:46:15,237 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:46:15,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 65 [2021-11-23 03:46:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:15,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:46:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:46:19,732 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:46:19,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345156479] [2021-11-23 03:46:19,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345156479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:46:19,733 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:46:19,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 13 [2021-11-23 03:46:19,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532698762] [2021-11-23 03:46:19,733 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:46:19,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:46:19,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:46:19,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:46:19,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=133, Unknown=2, NotChecked=0, Total=182 [2021-11-23 03:46:19,734 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 03:46:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:20,263 INFO L93 Difference]: Finished difference Result 227 states and 259 transitions. [2021-11-23 03:46:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:46:20,263 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 41 [2021-11-23 03:46:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:20,265 INFO L225 Difference]: With dead ends: 227 [2021-11-23 03:46:20,265 INFO L226 Difference]: Without dead ends: 227 [2021-11-23 03:46:20,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=68, Invalid=202, Unknown=2, NotChecked=0, Total=272 [2021-11-23 03:46:20,265 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 21 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:20,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 510 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 184 Unchecked, 0.4s Time] [2021-11-23 03:46:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-23 03:46:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 185. [2021-11-23 03:46:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 150 states have (on average 1.3933333333333333) internal successors, (209), 184 states have internal predecessors, (209), 0 states have call successors, (0), 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 03:46:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 209 transitions. [2021-11-23 03:46:20,270 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 209 transitions. Word has length 41 [2021-11-23 03:46:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:20,270 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 209 transitions. [2021-11-23 03:46:20,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 03:46:20,271 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 209 transitions. [2021-11-23 03:46:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:46:20,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:20,271 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:20,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-23 03:46:20,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:46:20,484 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:46:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1495424435, now seen corresponding path program 1 times [2021-11-23 03:46:20,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:46:20,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579333140] [2021-11-23 03:46:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:20,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:46:20,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:46:20,487 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:46:20,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-23 03:46:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:20,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 03:46:20,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:20,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:46:20,797 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:46:20,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-23 03:46:20,971 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 03:46:20,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-11-23 03:46:20,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:46:21,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:46:21,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:46:21,247 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-23 03:46:21,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 65 [2021-11-23 03:46:21,268 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 03:46:21,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 76 [2021-11-23 03:46:21,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-11-23 03:46:21,496 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 03:46:21,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 27 [2021-11-23 03:46:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:21,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:46:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:28,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:46:28,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579333140] [2021-11-23 03:46:28,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579333140] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:46:28,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [187230464] [2021-11-23 03:46:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:28,916 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:46:28,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:46:28,917 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:46:28,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-23 03:46:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:29,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 03:46:29,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:29,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:46:29,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:46:29,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:46:29,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2021-11-23 03:46:29,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 31 [2021-11-23 03:46:29,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 03:46:29,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-11-23 03:46:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:29,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:46:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:39,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [187230464] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:46:39,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:46:39,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 9] total 27 [2021-11-23 03:46:39,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925785774] [2021-11-23 03:46:39,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:46:39,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:46:39,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:46:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:46:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=631, Unknown=7, NotChecked=0, Total=756 [2021-11-23 03:46:39,772 INFO L87 Difference]: Start difference. First operand 185 states and 209 transitions. Second operand has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 03:46:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:41,084 INFO L93 Difference]: Finished difference Result 269 states and 304 transitions. [2021-11-23 03:46:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:46:41,085 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-23 03:46:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:41,086 INFO L225 Difference]: With dead ends: 269 [2021-11-23 03:46:41,086 INFO L226 Difference]: Without dead ends: 269 [2021-11-23 03:46:41,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=188, Invalid=861, Unknown=7, NotChecked=0, Total=1056 [2021-11-23 03:46:41,087 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 325 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:41,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 447 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 03:46:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-23 03:46:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 188. [2021-11-23 03:46:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 153 states have (on average 1.3856209150326797) internal successors, (212), 187 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 212 transitions. [2021-11-23 03:46:41,093 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 212 transitions. Word has length 41 [2021-11-23 03:46:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:41,094 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 212 transitions. [2021-11-23 03:46:41,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 03:46:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 212 transitions. [2021-11-23 03:46:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 03:46:41,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:41,095 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:41,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2021-11-23 03:46:41,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-23 03:46:41,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:46:41,498 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:46:41,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1932967109, now seen corresponding path program 1 times [2021-11-23 03:46:41,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:46:41,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884490284] [2021-11-23 03:46:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:41,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:46:41,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:46:41,501 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:46:41,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-23 03:46:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:41,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:46:41,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:41,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:46:41,884 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:46:41,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 03:46:42,092 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 03:46:42,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-11-23 03:46:42,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:46:42,264 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 03:46:42,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2021-11-23 03:46:42,375 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:46:42,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2021-11-23 03:46:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:42,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:46:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:55,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:46:55,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884490284] [2021-11-23 03:46:55,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884490284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:46:55,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1035968699] [2021-11-23 03:46:55,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:55,350 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:46:55,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:46:55,351 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:46:55,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-23 03:46:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:55,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:46:55,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:55,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:46:55,669 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:46:55,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-23 03:46:55,832 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 03:46:55,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-11-23 03:46:55,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:46:55,937 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 03:46:55,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2021-11-23 03:46:56,000 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:46:56,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2021-11-23 03:46:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:56,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:46:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:58,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1035968699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:46:58,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230185267] [2021-11-23 03:46:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:58,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:58,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:46:58,226 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:46:58,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-23 03:46:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:58,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:46:58,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:58,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:46:58,359 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:46:58,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-23 03:46:58,547 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 03:46:58,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 03:46:58,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:46:58,656 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 03:46:58,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2021-11-23 03:46:58,722 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:46:58,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2021-11-23 03:46:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:58,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:02,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230185267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:47:02,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:47:02,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 14 [2021-11-23 03:47:02,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666252071] [2021-11-23 03:47:02,941 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:47:02,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:47:02,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:47:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:47:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=142, Unknown=4, NotChecked=0, Total=182 [2021-11-23 03:47:02,942 INFO L87 Difference]: Start difference. First operand 188 states and 212 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 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 03:47:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:03,443 INFO L93 Difference]: Finished difference Result 204 states and 229 transitions. [2021-11-23 03:47:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:47:03,443 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 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 44 [2021-11-23 03:47:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:03,444 INFO L225 Difference]: With dead ends: 204 [2021-11-23 03:47:03,444 INFO L226 Difference]: Without dead ends: 204 [2021-11-23 03:47:03,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 239 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=70, Invalid=232, Unknown=4, NotChecked=0, Total=306 [2021-11-23 03:47:03,445 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 24 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:03,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 596 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 205 Unchecked, 0.3s Time] [2021-11-23 03:47:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-23 03:47:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-11-23 03:47:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 169 states have (on average 1.3550295857988166) internal successors, (229), 203 states have internal predecessors, (229), 0 states have call successors, (0), 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 03:47:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 229 transitions. [2021-11-23 03:47:03,449 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 229 transitions. Word has length 44 [2021-11-23 03:47:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:03,450 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 229 transitions. [2021-11-23 03:47:03,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 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 03:47:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 229 transitions. [2021-11-23 03:47:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 03:47:03,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:03,451 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:03,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:03,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:03,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2021-11-23 03:47:04,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 03:47:04,065 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:47:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash 546997044, now seen corresponding path program 1 times [2021-11-23 03:47:04,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:47:04,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016574142] [2021-11-23 03:47:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:04,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:47:04,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:47:04,066 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:47:04,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-23 03:47:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:04,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:47:04,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:04,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 03:47:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:47:04,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:04,316 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-23 03:47:04,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-23 03:47:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:47:04,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:47:04,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016574142] [2021-11-23 03:47:04,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016574142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:47:04,356 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:47:04,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 03:47:04,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891391647] [2021-11-23 03:47:04,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:47:04,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:47:04,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:47:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:47:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:47:04,358 INFO L87 Difference]: Start difference. First operand 204 states and 229 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 03:47:05,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:05,006 INFO L93 Difference]: Finished difference Result 203 states and 228 transitions. [2021-11-23 03:47:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:47:05,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 45 [2021-11-23 03:47:05,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:05,007 INFO L225 Difference]: With dead ends: 203 [2021-11-23 03:47:05,007 INFO L226 Difference]: Without dead ends: 203 [2021-11-23 03:47:05,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:47:05,008 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 22 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:05,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 360 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:47:05,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-23 03:47:05,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-11-23 03:47:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 169 states have (on average 1.349112426035503) internal successors, (228), 202 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:47:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2021-11-23 03:47:05,012 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 45 [2021-11-23 03:47:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:05,012 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2021-11-23 03:47:05,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 03:47:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2021-11-23 03:47:05,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 03:47:05,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:05,014 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:05,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:05,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:47:05,225 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:47:05,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash 546997045, now seen corresponding path program 1 times [2021-11-23 03:47:05,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:47:05,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829600341] [2021-11-23 03:47:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:05,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:47:05,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:47:05,227 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:47:05,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-23 03:47:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:05,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:47:05,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:05,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:47:05,539 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:47:05,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 03:47:05,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:47:05,727 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 03:47:05,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 03:47:05,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:47:05,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:47:05,959 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 03:47:05,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 53 [2021-11-23 03:47:05,982 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 03:47:05,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 67 [2021-11-23 03:47:06,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-11-23 03:47:06,286 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 03:47:06,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 27 [2021-11-23 03:47:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:06,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:07,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:07,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:15,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:47:15,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829600341] [2021-11-23 03:47:15,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829600341] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:47:15,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1992167635] [2021-11-23 03:47:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:15,440 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:47:15,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:47:15,441 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:47:15,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2021-11-23 03:47:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:15,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 03:47:15,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:15,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:47:15,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:47:15,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:47:15,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2021-11-23 03:47:16,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 31 [2021-11-23 03:47:16,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 03:47:16,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-11-23 03:47:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:16,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:24,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 72 [2021-11-23 03:47:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:24,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1992167635] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:47:24,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:47:24,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 9, 10] total 29 [2021-11-23 03:47:24,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042281458] [2021-11-23 03:47:24,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:47:24,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:47:24,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:47:24,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:47:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=732, Unknown=4, NotChecked=0, Total=870 [2021-11-23 03:47:24,502 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 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 03:47:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:26,342 INFO L93 Difference]: Finished difference Result 324 states and 363 transitions. [2021-11-23 03:47:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:47:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-23 03:47:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:26,344 INFO L225 Difference]: With dead ends: 324 [2021-11-23 03:47:26,344 INFO L226 Difference]: Without dead ends: 324 [2021-11-23 03:47:26,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=224, Invalid=1032, Unknown=4, NotChecked=0, Total=1260 [2021-11-23 03:47:26,346 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 408 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:26,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 617 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 03:47:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-23 03:47:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 210. [2021-11-23 03:47:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 176 states have (on average 1.3352272727272727) internal successors, (235), 209 states have internal predecessors, (235), 0 states have call successors, (0), 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 03:47:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 235 transitions. [2021-11-23 03:47:26,352 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 235 transitions. Word has length 45 [2021-11-23 03:47:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:26,352 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 235 transitions. [2021-11-23 03:47:26,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 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 03:47:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 235 transitions. [2021-11-23 03:47:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 03:47:26,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:26,353 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:26,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:26,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:26,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 03:47:26,754 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:47:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2091114839, now seen corresponding path program 1 times [2021-11-23 03:47:26,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:47:26,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772962794] [2021-11-23 03:47:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:26,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:47:26,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:47:26,755 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:47:26,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-23 03:47:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:26,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:47:27,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:27,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:47:27,061 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 03:47:27,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-23 03:47:27,206 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 03:47:27,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 03:47:27,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:47:27,366 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 03:47:27,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2021-11-23 03:47:27,576 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:47:27,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 18 [2021-11-23 03:47:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:27,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:36,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:47:36,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772962794] [2021-11-23 03:47:36,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772962794] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:47:36,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [984755062] [2021-11-23 03:47:36,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:36,299 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:47:36,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:47:36,300 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:47:36,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2021-11-23 03:47:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:36,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:47:36,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:36,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:47:36,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-11-23 03:47:37,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2021-11-23 03:47:37,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-23 03:47:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:37,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:37,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-11-23 03:47:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:42,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [984755062] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:47:42,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:47:42,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 9, 11] total 31 [2021-11-23 03:47:42,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240265621] [2021-11-23 03:47:42,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:47:42,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:47:42,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:47:42,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:47:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=845, Unknown=4, NotChecked=0, Total=992 [2021-11-23 03:47:42,908 INFO L87 Difference]: Start difference. First operand 210 states and 235 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 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 03:47:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:44,229 INFO L93 Difference]: Finished difference Result 285 states and 321 transitions. [2021-11-23 03:47:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:47:44,229 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-23 03:47:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:44,231 INFO L225 Difference]: With dead ends: 285 [2021-11-23 03:47:44,231 INFO L226 Difference]: Without dead ends: 285 [2021-11-23 03:47:44,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=256, Invalid=1222, Unknown=4, NotChecked=0, Total=1482 [2021-11-23 03:47:44,232 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 311 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:44,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 503 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 03:47:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-23 03:47:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 211. [2021-11-23 03:47:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 177 states have (on average 1.3333333333333333) internal successors, (236), 210 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:47:44,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 236 transitions. [2021-11-23 03:47:44,237 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 236 transitions. Word has length 49 [2021-11-23 03:47:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:44,237 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 236 transitions. [2021-11-23 03:47:44,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 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 03:47:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 236 transitions. [2021-11-23 03:47:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 03:47:44,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:44,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:44,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:44,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:44,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 03:47:44,653 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-23 03:47:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:44,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2098310590, now seen corresponding path program 1 times [2021-11-23 03:47:44,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:47:44,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920354287] [2021-11-23 03:47:44,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:44,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:47:44,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:47:44,654 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:47:44,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-23 03:47:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:44,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:47:44,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:44,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:47:45,034 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:47:45,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 03:47:45,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 03:47:45,287 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-11-23 03:47:45,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 65 [2021-11-23 03:47:45,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 52 [2021-11-23 03:47:45,871 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 03:47:45,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 55 [2021-11-23 03:47:46,036 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 03:47:46,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 55 [2021-11-23 03:47:46,259 INFO L354 Elim1Store]: treesize reduction 57, result has 44.1 percent of original size [2021-11-23 03:47:46,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 107 [2021-11-23 03:47:46,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 74 [2021-11-23 03:47:47,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 74 [2021-11-23 03:47:47,796 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-11-23 03:47:47,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 127 [2021-11-23 03:47:50,576 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 03:47:50,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 221 treesize of output 133 [2021-11-23 03:47:52,180 INFO L354 Elim1Store]: treesize reduction 81, result has 23.6 percent of original size [2021-11-23 03:47:52,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 136 treesize of output 151 [2021-11-23 03:47:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:47:52,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:55,358 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (let ((.cse0 (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~lItem~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~lItem~0#1.base|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|)))) (store .cse2 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |c_ULTIMATE.start_main_~lItem~0#1.base|))))) (store .cse1 |c_ULTIMATE.start_main_~lItem~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~lItem~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (select (store |c_#valid| (select .cse0 |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv0 1)) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))))))))))) is different from false [2021-11-23 03:47:57,488 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (let ((.cse0 (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~lItem~0#1.base_136|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|)))) (store .cse2 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))))) (store .cse1 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse1 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (select (store (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ bv1 1)) (select .cse0 |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv0 1)) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))))) is different from false [2021-11-23 03:47:59,580 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (let ((.cse0 (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_17)))) (store .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse2 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))))) (store .cse1 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse1 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (select (store (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ bv1 1)) (select .cse0 |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv0 1)) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))))) is different from false [2021-11-23 03:48:01,752 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (let ((.cse0 (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_17)))) (store .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse2 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))))) (store .cse1 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse1 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (select (store (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ bv1 1)) (select .cse0 |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv0 1)) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))))))))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))))) is different from false [2021-11-23 03:48:03,970 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (let ((.cse0 (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_17)))) (store .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse2 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))))) (store .cse1 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse1 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (select (store (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ bv1 1)) (select .cse0 |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv0 1)) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))))))))))))) (_ bv1 1))))) is different from false [2021-11-23 03:48:06,231 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_175| (_ BitVec 32)) (|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_175| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (select .cse0 |v_ULTIMATE.start_main_~lItem~0#1.base_136|)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (let ((.cse1 (select (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_175| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_175|) |ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_17)))) (store .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse3 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_136|))))) (store .cse2 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (store (select .cse2 |v_ULTIMATE.start_main_~lItem~0#1.base_136|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |v_ULTIMATE.start_main_~item~0#1.base_175|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (select (store (store .cse0 |v_ULTIMATE.start_main_~lItem~0#1.base_136| (_ bv1 1)) (select .cse1 |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv0 1)) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_175|)))))) is different from false [2021-11-23 03:48:06,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 280686 treesize of output 279918 [2021-11-23 03:48:16,936 WARN L227 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 530 DAG size of output: 522 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 03:48:16,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:48:16,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920354287] [2021-11-23 03:48:16,943 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:48:16,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1529845825] [2021-11-23 03:48:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:16,943 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:48:16,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:48:16,944 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:48:16,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2021-11-23 03:48:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:17,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 03:48:17,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:17,314 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 03:48:17,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-23 03:48:17,495 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 03:48:17,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 46 [2021-11-23 03:48:17,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 03:48:18,088 INFO L354 Elim1Store]: treesize reduction 69, result has 39.5 percent of original size [2021-11-23 03:48:18,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 86 [2021-11-23 03:48:18,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 53 [2021-11-23 03:48:18,874 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 03:48:18,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 58 [2021-11-23 03:48:19,047 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 03:48:19,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 58 [2021-11-23 03:48:19,433 INFO L354 Elim1Store]: treesize reduction 84, result has 40.4 percent of original size [2021-11-23 03:48:19,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 86 treesize of output 127 [2021-11-23 03:48:20,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 83 [2021-11-23 03:48:21,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 81 [2021-11-23 03:48:21,875 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-23 03:48:21,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 167 treesize of output 139 [2021-11-23 03:48:36,915 INFO L354 Elim1Store]: treesize reduction 41, result has 8.9 percent of original size [2021-11-23 03:48:36,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 167 [2021-11-23 03:48:36,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 148 [2021-11-23 03:48:39,124 INFO L354 Elim1Store]: treesize reduction 124, result has 21.0 percent of original size [2021-11-23 03:48:39,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 166 treesize of output 187 [2021-11-23 03:48:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:48:42,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:43,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-11-23 03:48:53,367 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~lItem~0#1.base_140| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse1 (select (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~lItem~0#1.base_140| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~lItem~0#1.base_140|) (_ bv0 32) |ULTIMATE.start_main_#t~mem7#1.base|)))) (store .cse3 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_140|))))) (store .cse2 |v_ULTIMATE.start_main_~lItem~0#1.base_140| (store (select .cse2 |v_ULTIMATE.start_main_~lItem~0#1.base_140|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~data~0#1.offset|))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_140| (_ bv1 1)) .cse0 (_ bv0 1)) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_140|))) (and (= |c_ULTIMATE.start_main_~data~0#1.offset| (_ bv0 32)) (= .cse0 |c_ULTIMATE.start_main_~data~0#1.base|)))))) is different from false [2021-11-23 03:48:55,818 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_140| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse1 (select (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_19)))) (store .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_140| (store (select .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_140|) (_ bv0 32) |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse3 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_140|))))) (store .cse2 |v_ULTIMATE.start_main_~lItem~0#1.base_140| (store (select .cse2 |v_ULTIMATE.start_main_~lItem~0#1.base_140|) (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~data~0#1.offset|))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_140|))) (and (= |c_ULTIMATE.start_main_~data~0#1.offset| (_ bv0 32)) (= .cse0 |c_ULTIMATE.start_main_~data~0#1.base|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_140| (_ bv1 1)) .cse0 (_ bv0 1)) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)))))))))))))))))) (_ bv1 1))))))) is different from false [2021-11-23 03:49:03,786 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|v_ULTIMATE.start_main_~item~0#1.base_179| (_ BitVec 32)) (|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_140| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_179| (_ bv1 1)))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (let ((.cse1 (select (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_179| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_179|) |ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_19)))) (store .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_140| (store (select .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_140|) (_ bv0 32) |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse3 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_140|))))) (store .cse2 |v_ULTIMATE.start_main_~lItem~0#1.base_140| (store (select .cse2 |v_ULTIMATE.start_main_~lItem~0#1.base_140|) (_ bv4 32) |v_ULTIMATE.start_main_~item~0#1.base_179|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (select (store (store .cse0 |v_ULTIMATE.start_main_~lItem~0#1.base_140| (_ bv1 1)) (select .cse1 |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv0 1)) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))))))))))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_179|))))) (not (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_main_~lItem~0#1.base_140|)))))) is different from false [2021-11-23 03:49:04,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323603 treesize of output 322835 [2021-11-23 03:49:14,814 WARN L227 SmtUtils]: Spent 10.78s on a formula simplification. DAG size of input: 774 DAG size of output: 767 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 03:49:14,818 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:49:14,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013125910] [2021-11-23 03:49:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:49:14,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:49:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:49:14,820 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:49:14,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-23 03:49:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:14,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 03:49:14,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:49:14,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:49:14,982 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 03:49:14,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-23 03:49:15,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 03:49:15,787 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-23 03:49:15,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 67 [2021-11-23 03:49:16,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 44 [2021-11-23 03:49:16,797 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 03:49:16,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2021-11-23 03:49:16,979 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 03:49:16,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-11-23 03:49:17,475 INFO L354 Elim1Store]: treesize reduction 69, result has 39.5 percent of original size [2021-11-23 03:49:17,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 77 treesize of output 108 [2021-11-23 03:49:18,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 70 [2021-11-23 03:49:19,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 70 [2021-11-23 03:49:20,515 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-11-23 03:49:20,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 122 [2021-11-23 03:50:13,137 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 03:50:13,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 238 treesize of output 154 [2021-11-23 03:50:13,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 135 [2021-11-23 03:50:15,489 INFO L354 Elim1Store]: treesize reduction 81, result has 23.6 percent of original size [2021-11-23 03:50:15,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 140 treesize of output 155 [2021-11-23 03:50:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:50:16,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:50:17,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-11-23 03:50:45,659 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ BitVec 32)) (|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse2 (select (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_21)))) (store .cse5 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse5 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse4 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))) (store .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ bv1 1))) (.cse0 (select .cse2 |c_ULTIMATE.start_main_~data~0#1.offset|))) (or (and (= |c_ULTIMATE.start_main_~data~0#1.offset| (_ bv0 32)) (= .cse0 |c_ULTIMATE.start_main_~data~0#1.base|)) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select .cse1 |c_ULTIMATE.start_main_~data~0#1.base|)))) (_ bv1 1)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse1 .cse0 (_ bv0 1)) (select .cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))))))) is different from false [2021-11-23 03:50:48,883 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ BitVec 32)) (|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse2 (select (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_21)))) (store .cse5 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse5 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse4 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))) (store .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_main_~data~0#1.offset|)) (.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ bv1 1)))) (or (and (= |c_ULTIMATE.start_main_~data~0#1.offset| (_ bv0 32)) (= .cse0 |c_ULTIMATE.start_main_~data~0#1.base|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse1 .cse0 (_ bv0 1)) (select .cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select .cse1 |c_ULTIMATE.start_main_~data~0#1.base|)))) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))))))) is different from false [2021-11-23 03:50:52,721 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ BitVec 32)) (|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse2 (select (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_21)))) (store .cse5 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse5 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse4 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))) (store .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse3 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ bv1 1))) (.cse1 (select .cse2 |c_ULTIMATE.start_main_~data~0#1.offset|))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select .cse0 |c_ULTIMATE.start_main_~data~0#1.base|)))) (_ bv1 1)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse0 .cse1 (_ bv0 1)) (select .cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)))))))))))))))))))) (and (= |c_ULTIMATE.start_main_~data~0#1.offset| (_ bv0 32)) (= .cse1 |c_ULTIMATE.start_main_~data~0#1.base|)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))))))) is different from false [2021-11-23 03:50:56,938 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_183| (_ BitVec 32)) (|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ BitVec 32)) (|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse3 (select (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_183| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_183|) |ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_21)))) (store .cse6 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse6 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse5 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))) (store .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |v_ULTIMATE.start_main_~item~0#1.base_183|))) |c_ULTIMATE.start_main_~data~0#1.base|)) (.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_183| (_ bv1 1)))) (let ((.cse2 (store .cse0 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ bv1 1))) (.cse1 (select .cse3 |c_ULTIMATE.start_main_~data~0#1.offset|))) (or (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))) (and (= |c_ULTIMATE.start_main_~data~0#1.offset| (_ bv0 32)) (= .cse1 |c_ULTIMATE.start_main_~data~0#1.base|)) (not (= (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse2 |c_ULTIMATE.start_main_~data~0#1.base|)))))))) (_ bv0 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse2 .cse1 (_ bv0 1)) (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_183|)))))))))) is different from false [2021-11-23 03:51:00,457 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_183| (_ BitVec 32)) (|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ BitVec 32)) (|ULTIMATE.start_main_~lItem~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_183| (_ bv1 1))) (.cse3 (select (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_183| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_183|) |ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_21)))) (store .cse6 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse6 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) |ULTIMATE.start_main_~lItem~0#1.offset| |ULTIMATE.start_main_#t~mem7#1.base|))))) (store .cse5 |c_ULTIMATE.start_main_~data~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset| |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))) (store .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (store (select .cse4 |v_ULTIMATE.start_main_~lItem~0#1.base_144|) (bvadd (_ bv4 32) |ULTIMATE.start_main_~lItem~0#1.offset|) |v_ULTIMATE.start_main_~item~0#1.base_183|))) |c_ULTIMATE.start_main_~data~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~data~0#1.offset|)) (.cse2 (store .cse0 |v_ULTIMATE.start_main_~lItem~0#1.base_144| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~lItem~0#1.base_144|))))) (and (= |c_ULTIMATE.start_main_~data~0#1.offset| (_ bv0 32)) (= .cse1 |c_ULTIMATE.start_main_~data~0#1.base|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse2 .cse1 (_ bv0 1)) (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_183|)))))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse2 |c_ULTIMATE.start_main_~data~0#1.base|)))))))) (_ bv1 1)))))))) is different from false [2021-11-23 03:51:00,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 612663 treesize of output 611127 [2021-11-23 03:51:23,083 WARN L227 SmtUtils]: Spent 22.58s on a formula simplification. DAG size of input: 740 DAG size of output: 740 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 03:51:23,090 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:51:23,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:23,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-23 03:51:23,090 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-23 03:51:23,091 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-23 03:51:23,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (69 of 70 remaining) [2021-11-23 03:51:23,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (68 of 70 remaining) [2021-11-23 03:51:23,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (67 of 70 remaining) [2021-11-23 03:51:23,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (66 of 70 remaining) [2021-11-23 03:51:23,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (65 of 70 remaining) [2021-11-23 03:51:23,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (64 of 70 remaining) [2021-11-23 03:51:23,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (63 of 70 remaining) [2021-11-23 03:51:23,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (62 of 70 remaining) [2021-11-23 03:51:23,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (61 of 70 remaining) [2021-11-23 03:51:23,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (60 of 70 remaining) [2021-11-23 03:51:23,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (59 of 70 remaining) [2021-11-23 03:51:23,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (58 of 70 remaining) [2021-11-23 03:51:23,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (57 of 70 remaining) [2021-11-23 03:51:23,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (56 of 70 remaining) [2021-11-23 03:51:23,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (55 of 70 remaining) [2021-11-23 03:51:23,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (54 of 70 remaining) [2021-11-23 03:51:23,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (53 of 70 remaining) [2021-11-23 03:51:23,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (52 of 70 remaining) [2021-11-23 03:51:23,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (51 of 70 remaining) [2021-11-23 03:51:23,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (50 of 70 remaining) [2021-11-23 03:51:23,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (49 of 70 remaining) [2021-11-23 03:51:23,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (48 of 70 remaining) [2021-11-23 03:51:23,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (47 of 70 remaining) [2021-11-23 03:51:23,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (46 of 70 remaining) [2021-11-23 03:51:23,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (45 of 70 remaining) [2021-11-23 03:51:23,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (44 of 70 remaining) [2021-11-23 03:51:23,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (43 of 70 remaining) [2021-11-23 03:51:23,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (42 of 70 remaining) [2021-11-23 03:51:23,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (41 of 70 remaining) [2021-11-23 03:51:23,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (40 of 70 remaining) [2021-11-23 03:51:23,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (39 of 70 remaining) [2021-11-23 03:51:23,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (38 of 70 remaining) [2021-11-23 03:51:23,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (37 of 70 remaining) [2021-11-23 03:51:23,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (36 of 70 remaining) [2021-11-23 03:51:23,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (35 of 70 remaining) [2021-11-23 03:51:23,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (34 of 70 remaining) [2021-11-23 03:51:23,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (33 of 70 remaining) [2021-11-23 03:51:23,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (32 of 70 remaining) [2021-11-23 03:51:23,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (31 of 70 remaining) [2021-11-23 03:51:23,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (30 of 70 remaining) [2021-11-23 03:51:23,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (29 of 70 remaining) [2021-11-23 03:51:23,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (28 of 70 remaining) [2021-11-23 03:51:23,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (27 of 70 remaining) [2021-11-23 03:51:23,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (26 of 70 remaining) [2021-11-23 03:51:23,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (25 of 70 remaining) [2021-11-23 03:51:23,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (24 of 70 remaining) [2021-11-23 03:51:23,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (23 of 70 remaining) [2021-11-23 03:51:23,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (22 of 70 remaining) [2021-11-23 03:51:23,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION (21 of 70 remaining) [2021-11-23 03:51:23,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (20 of 70 remaining) [2021-11-23 03:51:23,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (19 of 70 remaining) [2021-11-23 03:51:23,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION (18 of 70 remaining) [2021-11-23 03:51:23,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (17 of 70 remaining) [2021-11-23 03:51:23,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION (16 of 70 remaining) [2021-11-23 03:51:23,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION (15 of 70 remaining) [2021-11-23 03:51:23,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION (14 of 70 remaining) [2021-11-23 03:51:23,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION (13 of 70 remaining) [2021-11-23 03:51:23,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE (12 of 70 remaining) [2021-11-23 03:51:23,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE (11 of 70 remaining) [2021-11-23 03:51:23,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE (10 of 70 remaining) [2021-11-23 03:51:23,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION (9 of 70 remaining) [2021-11-23 03:51:23,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION (8 of 70 remaining) [2021-11-23 03:51:23,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION (7 of 70 remaining) [2021-11-23 03:51:23,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION (6 of 70 remaining) [2021-11-23 03:51:23,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION (5 of 70 remaining) [2021-11-23 03:51:23,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION (4 of 70 remaining) [2021-11-23 03:51:23,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_FREE (3 of 70 remaining) [2021-11-23 03:51:23,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE (2 of 70 remaining) [2021-11-23 03:51:23,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE (1 of 70 remaining) [2021-11-23 03:51:23,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK (0 of 70 remaining) [2021-11-23 03:51:23,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-23 03:51:23,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2021-11-23 03:51:23,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-23 03:51:23,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:51:23,730 INFO L732 BasicCegarLoop]: Path program 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] [2021-11-23 03:51:23,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:51:23,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:51:23 BoogieIcfgContainer [2021-11-23 03:51:23,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:51:23,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:51:23,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:51:23,768 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:51:23,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:27" (3/4) ... [2021-11-23 03:51:23,771 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:51:23,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:51:23,772 INFO L158 Benchmark]: Toolchain (without parser) took 597751.94ms. Allocated memory was 69.2MB in the beginning and 337.6MB in the end (delta: 268.4MB). Free memory was 50.5MB in the beginning and 256.5MB in the end (delta: -206.0MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2021-11-23 03:51:23,772 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 69.2MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:51:23,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.72ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 44.7MB in the end (delta: 5.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 03:51:23,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.49ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 42.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:51:23,773 INFO L158 Benchmark]: Boogie Preprocessor took 37.75ms. Allocated memory is still 69.2MB. Free memory was 42.4MB in the beginning and 40.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:51:23,773 INFO L158 Benchmark]: RCFGBuilder took 988.34ms. Allocated memory is still 69.2MB. Free memory was 40.2MB in the beginning and 37.8MB in the end (delta: 2.4MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-11-23 03:51:23,781 INFO L158 Benchmark]: TraceAbstraction took 596119.26ms. Allocated memory was 69.2MB in the beginning and 337.6MB in the end (delta: 268.4MB). Free memory was 37.5MB in the beginning and 256.5MB in the end (delta: -219.0MB). Peak memory consumption was 196.8MB. Max. memory is 16.1GB. [2021-11-23 03:51:23,782 INFO L158 Benchmark]: Witness Printer took 4.37ms. Allocated memory is still 337.6MB. Free memory is still 256.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:51:23,782 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 69.2MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.72ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 44.7MB in the end (delta: 5.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.49ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 42.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.75ms. Allocated memory is still 69.2MB. Free memory was 42.4MB in the beginning and 40.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 988.34ms. Allocated memory is still 69.2MB. Free memory was 40.2MB in the beginning and 37.8MB in the end (delta: 2.4MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * TraceAbstraction took 596119.26ms. Allocated memory was 69.2MB in the beginning and 337.6MB in the end (delta: 268.4MB). Free memory was 37.5MB in the beginning and 256.5MB in the end (delta: -219.0MB). Peak memory consumption was 196.8MB. Max. memory is 16.1GB. * Witness Printer took 4.37ms. Allocated memory is still 337.6MB. Free memory is still 256.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L533] struct TLItem* data = ((void *)0); [L534] struct DItem* item, * item2; [L535] struct TLItem *lItem; [L536] int c1 = 0; [L537] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L538] c1++ [L539] item = malloc(sizeof *item) [L540] COND FALSE !(!item) [L542] item->next = ((void *)0) [L543] COND TRUE c1 < 2 [L544] item->value = 2 [L545] COND TRUE c1 < 4 [L546] item->value = c1 + 2 [L547] COND TRUE c1 < 6 [L548] item->value = 2 * c1 + 4 [L549] lItem = malloc(sizeof *lItem) [L550] COND FALSE !(\read(*data)) [L554] lItem->next = lItem [L555] data = lItem [L557] lItem->data = item [L558] item = ((void *)0) [L559] lItem = ((void *)0) [L537] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L538] c1++ [L539] item = malloc(sizeof *item) [L540] COND FALSE !(!item) [L542] item->next = ((void *)0) [L543] COND FALSE !(c1 < 2) [L545] COND TRUE c1 < 4 [L546] item->value = c1 + 2 [L547] COND TRUE c1 < 6 [L548] item->value = 2 * c1 + 4 [L549] lItem = malloc(sizeof *lItem) [L550] COND TRUE \read(*data) [L551] EXPR data->next [L551] lItem->next = data->next [L552] data->next = lItem [L557] lItem->data = item [L558] item = ((void *)0) [L559] lItem = ((void *)0) [L537] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L561] COND FALSE !(!data) [L563] EXPR data->next [L563] COND TRUE data->next != data [L564] EXPR data->data [L564] item = data->data [L565] EXPR data->next [L565] EXPR data->next->data [L565] item2 = data->next->data [L566] EXPR data->next [L566] lItem = data->next [L567] EXPR lItem->next [L567] data->next = lItem->next [L568] free(lItem) [L568] free(lItem) [L568] free(lItem) [L569] struct DItem** dst = &data->data; [L570] COND TRUE item && item2 [L571] item->value - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 149 locations, 70 error locations. Started 1 CEGAR loops. OverallTime: 596.0s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 60.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5501 SdHoareTripleChecker+Valid, 31.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5501 mSDsluCounter, 16942 SdHoareTripleChecker+Invalid, 27.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3310 IncrementalHoareTripleChecker+Unchecked, 13403 mSDsCounter, 370 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9205 IncrementalHoareTripleChecker+Invalid, 12885 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 370 mSolverCounterUnsat, 3539 mSDtfsCounter, 9205 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2770 GetRequests, 2235 SyntacticMatches, 55 SemanticMatches, 480 ConstructedPredicates, 22 IntricatePredicates, 0 DeprecatedPredicates, 4678 ImplicationChecksByTransitivity, 286.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=30, InterpolantAutomatonStates: 314, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 30 MinimizatonAttempts, 1809 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 333.6s InterpolantComputationTime, 1410 NumberOfCodeBlocks, 1410 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2681 ConstructedInterpolants, 379 QuantifiedInterpolants, 39118 SizeOfPredicates, 393 NumberOfNonLiveVariables, 5785 ConjunctsInSsa, 490 ConjunctsInUnsatCore, 87 InterpolantComputations, 47 PerfectInterpolantSequences, 354/462 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 03:51:23,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1477e4dd-be23-4acf-b31e-322fcf86baa5/bin/utaipan-EQgc7hIp5V/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: UNKNOWN