./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0521.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0521.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7 --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 aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:58:53,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:58:53,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:58:53,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:58:53,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:58:53,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:58:53,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:58:53,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:58:53,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:58:53,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:58:53,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:58:53,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:58:53,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:58:53,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:58:53,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:58:53,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:58:53,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:58:53,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:58:53,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:58:53,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:58:53,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:58:53,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:58:53,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:58:53,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:58:53,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:58:53,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:58:53,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:58:53,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:58:53,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:58:53,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:58:53,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:58:53,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:58:53,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:58:53,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:58:53,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:58:53,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:58:53,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:58:53,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:58:53,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:58:53,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:58:53,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:58:53,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 18:58:53,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:58:53,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:58:53,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:58:53,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:58:53,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:58:53,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:58:53,789 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:58:53,789 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:58:53,789 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:58:53,790 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:58:53,791 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:58:53,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:58:53,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:58:53,791 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:58:53,791 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:58:53,792 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:58:53,792 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:58:53,792 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:58:53,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 18:58:53,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 18:58:53,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:58:53,793 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:58:53,793 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:58:53,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:58:53,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:58:53,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:58:53,796 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 18:58:53,796 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 18:58:53,797 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 18:58:53,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:58:53,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:58:53,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:58:53,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:58:53,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:58:53,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:58:53,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:58:53,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:58:53,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:58:53,799 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:58:53,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:58:53,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:58:53,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:58:53,799 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_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 [2021-11-25 18:58:54,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:58:54,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:58:54,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:58:54,118 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:58:54,119 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:58:54,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/memsafety/test-0521.i [2021-11-25 18:58:54,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data/4d7fdb2d6/647e9423ac274fb3b4343891745dad70/FLAG07bdf7387 [2021-11-25 18:58:54,676 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:58:54,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/sv-benchmarks/c/memsafety/test-0521.i [2021-11-25 18:58:54,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data/4d7fdb2d6/647e9423ac274fb3b4343891745dad70/FLAG07bdf7387 [2021-11-25 18:58:54,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data/4d7fdb2d6/647e9423ac274fb3b4343891745dad70 [2021-11-25 18:58:54,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:58:54,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:58:54,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:58:54,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:58:54,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:58:54,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:58:54" (1/1) ... [2021-11-25 18:58:54,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c02371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:54, skipping insertion in model container [2021-11-25 18:58:54,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:58:54" (1/1) ... [2021-11-25 18:58:54,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:58:55,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:58:55,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:58:55,357 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:58:55,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:58:55,461 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:58:55,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55 WrapperNode [2021-11-25 18:58:55,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:58:55,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:58:55,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:58:55,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:58:55,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,552 INFO L137 Inliner]: procedures = 125, calls = 95, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 305 [2021-11-25 18:58:55,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:58:55,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:58:55,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:58:55,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:58:55,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:58:55,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:58:55,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:58:55,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:58:55,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (1/1) ... [2021-11-25 18:58:55,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:58:55,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:58:55,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:58:55,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:58:55,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:58:55,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:58:55,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:58:55,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:58:55,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:58:55,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:58:55,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:58:55,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:58:55,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:58:55,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:58:55,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:58:55,827 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:58:55,829 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:58:56,759 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:58:56,889 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:58:56,889 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-25 18:58:56,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:58:56 BoogieIcfgContainer [2021-11-25 18:58:56,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:58:56,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:58:56,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:58:56,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:58:56,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:58:54" (1/3) ... [2021-11-25 18:58:56,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a544fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:58:56, skipping insertion in model container [2021-11-25 18:58:56,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:55" (2/3) ... [2021-11-25 18:58:56,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a544fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:58:56, skipping insertion in model container [2021-11-25 18:58:56,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:58:56" (3/3) ... [2021-11-25 18:58:56,907 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0521.i [2021-11-25 18:58:56,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:58:56,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 152 error locations. [2021-11-25 18:58:56,961 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:58:56,968 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 [2021-11-25 18:58:56,969 INFO L340 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2021-11-25 18:58:56,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 273 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) [2021-11-25 18:58:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:58:56,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:57,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:58:57,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:58:57,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash 16140635, now seen corresponding path program 1 times [2021-11-25 18:58:57,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:57,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936365538] [2021-11-25 18:58:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:57,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:57,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:57,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936365538] [2021-11-25 18:58:57,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936365538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:57,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:57,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:58:57,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023988918] [2021-11-25 18:58:57,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:57,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:57,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:57,272 INFO L87 Difference]: Start difference. First operand has 274 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 273 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) 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) [2021-11-25 18:58:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:57,717 INFO L93 Difference]: Finished difference Result 355 states and 389 transitions. [2021-11-25 18:58:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:57,725 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 [2021-11-25 18:58:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:57,742 INFO L225 Difference]: With dead ends: 355 [2021-11-25 18:58:57,742 INFO L226 Difference]: Without dead ends: 354 [2021-11-25 18:58:57,745 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 [2021-11-25 18:58:57,751 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 98 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:57,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 429 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:58:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-25 18:58:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 271. [2021-11-25 18:58:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 121 states have (on average 2.446280991735537) internal successors, (296), 270 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) [2021-11-25 18:58:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 296 transitions. [2021-11-25 18:58:57,818 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 296 transitions. Word has length 4 [2021-11-25 18:58:57,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:57,818 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 296 transitions. [2021-11-25 18:58:57,819 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) [2021-11-25 18:58:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 296 transitions. [2021-11-25 18:58:57,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:58:57,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:57,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:58:57,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:58:57,820 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:58:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash 16140636, now seen corresponding path program 1 times [2021-11-25 18:58:57,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:57,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834629878] [2021-11-25 18:58:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:57,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:57,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:57,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834629878] [2021-11-25 18:58:57,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834629878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:57,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:57,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:58:57,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738782808] [2021-11-25 18:58:57,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:57,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:57,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:57,892 INFO L87 Difference]: Start difference. First operand 271 states and 296 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) [2021-11-25 18:58:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:58,346 INFO L93 Difference]: Finished difference Result 473 states and 520 transitions. [2021-11-25 18:58:58,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:58,347 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 [2021-11-25 18:58:58,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:58,351 INFO L225 Difference]: With dead ends: 473 [2021-11-25 18:58:58,351 INFO L226 Difference]: Without dead ends: 473 [2021-11-25 18:58:58,351 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 [2021-11-25 18:58:58,353 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 229 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:58,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 507 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:58:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-25 18:58:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 269. [2021-11-25 18:58:58,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 121 states have (on average 2.4297520661157024) internal successors, (294), 268 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:58,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 294 transitions. [2021-11-25 18:58:58,390 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 294 transitions. Word has length 4 [2021-11-25 18:58:58,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:58,390 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 294 transitions. [2021-11-25 18:58:58,391 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) [2021-11-25 18:58:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 294 transitions. [2021-11-25 18:58:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:58:58,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:58,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:58:58,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:58:58,397 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:58:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 499844386, now seen corresponding path program 1 times [2021-11-25 18:58:58,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:58,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368097029] [2021-11-25 18:58:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:58,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:58,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:58,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368097029] [2021-11-25 18:58:58,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368097029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:58,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:58,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:58:58,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467436838] [2021-11-25 18:58:58,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:58,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:58,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:58,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:58,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:58,460 INFO L87 Difference]: Start difference. First operand 269 states and 294 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) [2021-11-25 18:58:58,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:58,670 INFO L93 Difference]: Finished difference Result 253 states and 278 transitions. [2021-11-25 18:58:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:58,671 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 [2021-11-25 18:58:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:58,673 INFO L225 Difference]: With dead ends: 253 [2021-11-25 18:58:58,674 INFO L226 Difference]: Without dead ends: 253 [2021-11-25 18:58:58,674 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 [2021-11-25 18:58:58,681 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 71 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:58,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 293 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:58:58,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-25 18:58:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-25 18:58:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 121 states have (on average 2.2975206611570247) internal successors, (278), 252 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 278 transitions. [2021-11-25 18:58:58,700 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 278 transitions. Word has length 5 [2021-11-25 18:58:58,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:58,700 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 278 transitions. [2021-11-25 18:58:58,700 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) [2021-11-25 18:58:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 278 transitions. [2021-11-25 18:58:58,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:58:58,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:58,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:58:58,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:58:58,709 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:58:58,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:58,710 INFO L85 PathProgramCache]: Analyzing trace with hash 499844387, now seen corresponding path program 1 times [2021-11-25 18:58:58,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:58,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955060372] [2021-11-25 18:58:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:58,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:58,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:58,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955060372] [2021-11-25 18:58:58,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955060372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:58,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:58,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:58:58,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534373833] [2021-11-25 18:58:58,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:58,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:58,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:58,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:58,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:58,782 INFO L87 Difference]: Start difference. First operand 253 states and 278 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) [2021-11-25 18:58:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:58,981 INFO L93 Difference]: Finished difference Result 237 states and 262 transitions. [2021-11-25 18:58:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:58,981 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 [2021-11-25 18:58:58,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:58,983 INFO L225 Difference]: With dead ends: 237 [2021-11-25 18:58:58,983 INFO L226 Difference]: Without dead ends: 237 [2021-11-25 18:58:58,983 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 [2021-11-25 18:58:58,985 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 55 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:58,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 301 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:58:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-25 18:58:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-11-25 18:58:58,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 121 states have (on average 2.165289256198347) internal successors, (262), 236 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 262 transitions. [2021-11-25 18:58:58,992 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 262 transitions. Word has length 5 [2021-11-25 18:58:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:58,992 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 262 transitions. [2021-11-25 18:58:58,992 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) [2021-11-25 18:58:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 262 transitions. [2021-11-25 18:58:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:58:58,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:58,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:58:58,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:58:58,994 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:58:58,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1668216808, now seen corresponding path program 1 times [2021-11-25 18:58:58,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:58,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940016893] [2021-11-25 18:58:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:58,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:59,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:59,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940016893] [2021-11-25 18:58:59,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940016893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:59,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:59,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:58:59,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232834434] [2021-11-25 18:58:59,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:59,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:59,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:59,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:59,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:59,039 INFO L87 Difference]: Start difference. First operand 237 states and 262 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:59,271 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2021-11-25 18:58:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:59,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-25 18:58:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:59,273 INFO L225 Difference]: With dead ends: 288 [2021-11-25 18:58:59,273 INFO L226 Difference]: Without dead ends: 288 [2021-11-25 18:58:59,274 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 [2021-11-25 18:58:59,275 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 62 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:59,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 363 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:58:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-25 18:58:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 235. [2021-11-25 18:58:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 121 states have (on average 2.1487603305785123) internal successors, (260), 234 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 260 transitions. [2021-11-25 18:58:59,282 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 260 transitions. Word has length 6 [2021-11-25 18:58:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:59,282 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 260 transitions. [2021-11-25 18:58:59,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 260 transitions. [2021-11-25 18:58:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:58:59,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:59,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:58:59,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:58:59,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:58:59,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1668216807, now seen corresponding path program 1 times [2021-11-25 18:58:59,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:59,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897766730] [2021-11-25 18:58:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:59,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:59,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:59,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897766730] [2021-11-25 18:58:59,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897766730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:59,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:59,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:58:59,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542188373] [2021-11-25 18:58:59,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:59,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:59,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:59,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:59,340 INFO L87 Difference]: Start difference. First operand 235 states and 260 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:59,640 INFO L93 Difference]: Finished difference Result 407 states and 454 transitions. [2021-11-25 18:58:59,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:59,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-25 18:58:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:59,643 INFO L225 Difference]: With dead ends: 407 [2021-11-25 18:58:59,643 INFO L226 Difference]: Without dead ends: 407 [2021-11-25 18:58:59,643 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 [2021-11-25 18:58:59,644 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 193 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:59,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 441 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:58:59,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-25 18:58:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 233. [2021-11-25 18:58:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 121 states have (on average 2.1322314049586777) internal successors, (258), 232 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 258 transitions. [2021-11-25 18:58:59,652 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 258 transitions. Word has length 6 [2021-11-25 18:58:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:59,652 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 258 transitions. [2021-11-25 18:58:59,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 258 transitions. [2021-11-25 18:58:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:58:59,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:59,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:59,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:58:59,654 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:58:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash -685881597, now seen corresponding path program 1 times [2021-11-25 18:58:59,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:59,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131698218] [2021-11-25 18:58:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:59,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:59,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:59,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131698218] [2021-11-25 18:58:59,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131698218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:59,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:59,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:59,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287709144] [2021-11-25 18:58:59,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:59,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:58:59,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:58:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:58:59,704 INFO L87 Difference]: Start difference. First operand 233 states and 258 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:59,903 INFO L93 Difference]: Finished difference Result 575 states and 638 transitions. [2021-11-25 18:58:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:58:59,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-25 18:58:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:59,907 INFO L225 Difference]: With dead ends: 575 [2021-11-25 18:58:59,907 INFO L226 Difference]: Without dead ends: 575 [2021-11-25 18:58:59,907 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 [2021-11-25 18:58:59,911 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 507 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:59,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 636 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:58:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-25 18:58:59,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 238. [2021-11-25 18:58:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 126 states have (on average 2.0952380952380953) internal successors, (264), 237 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2021-11-25 18:58:59,921 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 7 [2021-11-25 18:58:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:59,921 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2021-11-25 18:58:59,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2021-11-25 18:58:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:58:59,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:59,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:59,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:58:59,923 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:58:59,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:59,926 INFO L85 PathProgramCache]: Analyzing trace with hash 281311273, now seen corresponding path program 1 times [2021-11-25 18:58:59,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:59,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572999705] [2021-11-25 18:58:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:59,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:00,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:00,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572999705] [2021-11-25 18:59:00,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572999705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:00,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:00,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:00,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146600184] [2021-11-25 18:59:00,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:00,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:59:00,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:59:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:59:00,039 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:00,386 INFO L93 Difference]: Finished difference Result 571 states and 634 transitions. [2021-11-25 18:59:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:59:00,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 [2021-11-25 18:59:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:00,390 INFO L225 Difference]: With dead ends: 571 [2021-11-25 18:59:00,390 INFO L226 Difference]: Without dead ends: 571 [2021-11-25 18:59:00,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:59:00,392 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 490 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:00,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 1022 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:59:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-25 18:59:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 241. [2021-11-25 18:59:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 240 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 267 transitions. [2021-11-25 18:59:00,400 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 267 transitions. Word has length 11 [2021-11-25 18:59:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:00,400 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 267 transitions. [2021-11-25 18:59:00,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 267 transitions. [2021-11-25 18:59:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:59:00,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:00,402 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:00,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:59:00,402 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash -589468412, now seen corresponding path program 1 times [2021-11-25 18:59:00,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:00,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536751884] [2021-11-25 18:59:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:00,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:00,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:00,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536751884] [2021-11-25 18:59:00,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536751884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:00,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:00,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:00,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222974041] [2021-11-25 18:59:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:00,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:59:00,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:59:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:59:00,537 INFO L87 Difference]: Start difference. First operand 241 states and 267 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2021-11-25 18:59:00,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:00,916 INFO L93 Difference]: Finished difference Result 279 states and 310 transitions. [2021-11-25 18:59:00,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:59:00,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 [2021-11-25 18:59:00,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:00,918 INFO L225 Difference]: With dead ends: 279 [2021-11-25 18:59:00,918 INFO L226 Difference]: Without dead ends: 279 [2021-11-25 18:59:00,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:00,919 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 184 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:00,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 624 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:59:00,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-25 18:59:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 243. [2021-11-25 18:59:00,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 133 states have (on average 2.045112781954887) internal successors, (272), 242 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) [2021-11-25 18:59:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 272 transitions. [2021-11-25 18:59:00,924 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 272 transitions. Word has length 13 [2021-11-25 18:59:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:00,924 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 272 transitions. [2021-11-25 18:59:00,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2021-11-25 18:59:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 272 transitions. [2021-11-25 18:59:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:59:00,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:00,925 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:00,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:59:00,925 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash -589468411, now seen corresponding path program 1 times [2021-11-25 18:59:00,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:00,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811674725] [2021-11-25 18:59:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:00,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:01,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:01,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811674725] [2021-11-25 18:59:01,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811674725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:01,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:01,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:59:01,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999930986] [2021-11-25 18:59:01,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:01,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:01,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:01,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:01,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:01,003 INFO L87 Difference]: Start difference. First operand 243 states and 272 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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) [2021-11-25 18:59:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:01,514 INFO L93 Difference]: Finished difference Result 391 states and 440 transitions. [2021-11-25 18:59:01,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:59:01,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 [2021-11-25 18:59:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:01,517 INFO L225 Difference]: With dead ends: 391 [2021-11-25 18:59:01,518 INFO L226 Difference]: Without dead ends: 391 [2021-11-25 18:59:01,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:01,519 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 446 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:01,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 670 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:59:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-25 18:59:01,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 242. [2021-11-25 18:59:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 133 states have (on average 2.037593984962406) internal successors, (271), 241 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2021-11-25 18:59:01,526 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 13 [2021-11-25 18:59:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:01,527 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2021-11-25 18:59:01,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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) [2021-11-25 18:59:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2021-11-25 18:59:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:59:01,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:01,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:01,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:59:01,529 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:01,529 INFO L85 PathProgramCache]: Analyzing trace with hash -244042145, now seen corresponding path program 1 times [2021-11-25 18:59:01,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:01,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773878704] [2021-11-25 18:59:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:01,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:01,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:01,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773878704] [2021-11-25 18:59:01,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773878704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:01,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:01,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:59:01,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505912500] [2021-11-25 18:59:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:01,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:01,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:01,576 INFO L87 Difference]: Start difference. First operand 242 states and 271 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:01,754 INFO L93 Difference]: Finished difference Result 356 states and 396 transitions. [2021-11-25 18:59:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:59:01,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 18:59:01,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:01,756 INFO L225 Difference]: With dead ends: 356 [2021-11-25 18:59:01,756 INFO L226 Difference]: Without dead ends: 356 [2021-11-25 18:59:01,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:59:01,758 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 215 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:01,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 825 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:59:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-25 18:59:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 297. [2021-11-25 18:59:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 188 states have (on average 2.074468085106383) internal successors, (390), 296 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 390 transitions. [2021-11-25 18:59:01,767 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 390 transitions. Word has length 13 [2021-11-25 18:59:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:01,768 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 390 transitions. [2021-11-25 18:59:01,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 390 transitions. [2021-11-25 18:59:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 18:59:01,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:01,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:01,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:59:01,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash 633132918, now seen corresponding path program 1 times [2021-11-25 18:59:01,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:01,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094076997] [2021-11-25 18:59:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:01,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:01,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:01,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094076997] [2021-11-25 18:59:01,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094076997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:01,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:01,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:01,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619488298] [2021-11-25 18:59:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:01,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:01,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:01,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:01,801 INFO L87 Difference]: Start difference. First operand 297 states and 390 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) 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) [2021-11-25 18:59:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:01,863 INFO L93 Difference]: Finished difference Result 284 states and 367 transitions. [2021-11-25 18:59:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:01,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) 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 [2021-11-25 18:59:01,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:01,866 INFO L225 Difference]: With dead ends: 284 [2021-11-25 18:59:01,866 INFO L226 Difference]: Without dead ends: 284 [2021-11-25 18:59:01,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:01,867 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 193 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:01,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 261 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:59:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-25 18:59:01,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-11-25 18:59:01,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 175 states have (on average 2.097142857142857) internal successors, (367), 283 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 367 transitions. [2021-11-25 18:59:01,874 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 367 transitions. Word has length 14 [2021-11-25 18:59:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:01,875 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 367 transitions. [2021-11-25 18:59:01,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) 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) [2021-11-25 18:59:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 367 transitions. [2021-11-25 18:59:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:59:01,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:01,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:01,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:59:01,876 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1698896675, now seen corresponding path program 1 times [2021-11-25 18:59:01,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:01,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815199596] [2021-11-25 18:59:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:01,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:01,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:01,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815199596] [2021-11-25 18:59:01,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815199596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:01,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:01,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:59:01,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242317428] [2021-11-25 18:59:01,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:01,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:01,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:01,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:01,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:01,902 INFO L87 Difference]: Start difference. First operand 284 states and 367 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:02,075 INFO L93 Difference]: Finished difference Result 268 states and 335 transitions. [2021-11-25 18:59:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:02,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-25 18:59:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:02,078 INFO L225 Difference]: With dead ends: 268 [2021-11-25 18:59:02,078 INFO L226 Difference]: Without dead ends: 268 [2021-11-25 18:59:02,078 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 [2021-11-25 18:59:02,079 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 71 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:02,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 235 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-25 18:59:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-11-25 18:59:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 175 states have (on average 1.9142857142857144) internal successors, (335), 267 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 335 transitions. [2021-11-25 18:59:02,086 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 335 transitions. Word has length 15 [2021-11-25 18:59:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:02,087 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 335 transitions. [2021-11-25 18:59:02,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 335 transitions. [2021-11-25 18:59:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:59:02,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:02,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:02,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:59:02,089 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1698896676, now seen corresponding path program 1 times [2021-11-25 18:59:02,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:02,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133136880] [2021-11-25 18:59:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:02,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:02,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:02,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133136880] [2021-11-25 18:59:02,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133136880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:02,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:02,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:59:02,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703067137] [2021-11-25 18:59:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:02,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:02,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:02,123 INFO L87 Difference]: Start difference. First operand 268 states and 335 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:02,305 INFO L93 Difference]: Finished difference Result 252 states and 303 transitions. [2021-11-25 18:59:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:02,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-25 18:59:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:02,307 INFO L225 Difference]: With dead ends: 252 [2021-11-25 18:59:02,308 INFO L226 Difference]: Without dead ends: 252 [2021-11-25 18:59:02,308 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 [2021-11-25 18:59:02,309 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 55 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:02,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 242 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-25 18:59:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-11-25 18:59:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 175 states have (on average 1.7314285714285715) internal successors, (303), 251 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 303 transitions. [2021-11-25 18:59:02,328 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 303 transitions. Word has length 15 [2021-11-25 18:59:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:02,328 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 303 transitions. [2021-11-25 18:59:02,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 303 transitions. [2021-11-25 18:59:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:59:02,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:02,335 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:02,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:59:02,335 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash 915322282, now seen corresponding path program 1 times [2021-11-25 18:59:02,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:02,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356078194] [2021-11-25 18:59:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:02,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:02,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:02,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356078194] [2021-11-25 18:59:02,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356078194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:02,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:02,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:02,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943094661] [2021-11-25 18:59:02,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:02,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:02,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:02,400 INFO L87 Difference]: Start difference. First operand 252 states and 303 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-11-25 18:59:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:02,539 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2021-11-25 18:59:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:59:02,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-25 18:59:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:02,542 INFO L225 Difference]: With dead ends: 272 [2021-11-25 18:59:02,542 INFO L226 Difference]: Without dead ends: 272 [2021-11-25 18:59:02,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:02,543 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 567 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:02,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 490 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:59:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-25 18:59:02,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 252. [2021-11-25 18:59:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 175 states have (on average 1.7257142857142858) internal successors, (302), 251 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) [2021-11-25 18:59:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 302 transitions. [2021-11-25 18:59:02,552 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 302 transitions. Word has length 17 [2021-11-25 18:59:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:02,553 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 302 transitions. [2021-11-25 18:59:02,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-11-25 18:59:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 302 transitions. [2021-11-25 18:59:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:59:02,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:02,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:02,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:59:02,555 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:02,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:02,555 INFO L85 PathProgramCache]: Analyzing trace with hash 552141732, now seen corresponding path program 1 times [2021-11-25 18:59:02,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:02,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943665936] [2021-11-25 18:59:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:02,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:02,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:02,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943665936] [2021-11-25 18:59:02,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943665936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:02,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:02,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:59:02,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43218034] [2021-11-25 18:59:02,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:02,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:02,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:02,626 INFO L87 Difference]: Start difference. First operand 252 states and 302 transitions. Second operand has 5 states, 5 states have (on average 3.4) 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) [2021-11-25 18:59:02,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:02,819 INFO L93 Difference]: Finished difference Result 339 states and 384 transitions. [2021-11-25 18:59:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:59:02,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-25 18:59:02,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:02,822 INFO L225 Difference]: With dead ends: 339 [2021-11-25 18:59:02,822 INFO L226 Difference]: Without dead ends: 339 [2021-11-25 18:59:02,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:02,823 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 242 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:02,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 696 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-25 18:59:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 250. [2021-11-25 18:59:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 173 states have (on average 1.716763005780347) internal successors, (297), 249 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 297 transitions. [2021-11-25 18:59:02,829 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 297 transitions. Word has length 17 [2021-11-25 18:59:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:02,829 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 297 transitions. [2021-11-25 18:59:02,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) 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) [2021-11-25 18:59:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 297 transitions. [2021-11-25 18:59:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:59:02,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:02,830 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:02,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:59:02,830 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash 944178417, now seen corresponding path program 1 times [2021-11-25 18:59:02,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:02,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748514086] [2021-11-25 18:59:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:02,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:03,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:03,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748514086] [2021-11-25 18:59:03,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748514086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:03,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:03,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:59:03,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822160161] [2021-11-25 18:59:03,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:03,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:59:03,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:03,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:59:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:59:03,013 INFO L87 Difference]: Start difference. First operand 250 states and 297 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:03,730 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2021-11-25 18:59:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:59:03,731 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-25 18:59:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:03,733 INFO L225 Difference]: With dead ends: 252 [2021-11-25 18:59:03,733 INFO L226 Difference]: Without dead ends: 252 [2021-11-25 18:59:03,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:59:03,734 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 219 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:03,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 871 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:59:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-25 18:59:03,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 249. [2021-11-25 18:59:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 173 states have (on average 1.7109826589595376) internal successors, (296), 248 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) [2021-11-25 18:59:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 296 transitions. [2021-11-25 18:59:03,740 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 296 transitions. Word has length 19 [2021-11-25 18:59:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:03,740 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 296 transitions. [2021-11-25 18:59:03,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 296 transitions. [2021-11-25 18:59:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:59:03,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:03,741 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:03,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:59:03,741 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:03,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash 944178418, now seen corresponding path program 1 times [2021-11-25 18:59:03,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:03,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749202696] [2021-11-25 18:59:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:03,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:03,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:03,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749202696] [2021-11-25 18:59:03,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749202696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:03,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:03,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:59:03,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693332215] [2021-11-25 18:59:03,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:03,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:59:03,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:03,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:59:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:03,965 INFO L87 Difference]: Start difference. First operand 249 states and 296 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:05,305 INFO L93 Difference]: Finished difference Result 473 states and 560 transitions. [2021-11-25 18:59:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:59:05,306 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-25 18:59:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:05,308 INFO L225 Difference]: With dead ends: 473 [2021-11-25 18:59:05,309 INFO L226 Difference]: Without dead ends: 473 [2021-11-25 18:59:05,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-11-25 18:59:05,310 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 422 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:05,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1517 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:59:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-25 18:59:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 248. [2021-11-25 18:59:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 173 states have (on average 1.7052023121387283) internal successors, (295), 247 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 295 transitions. [2021-11-25 18:59:05,318 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 295 transitions. Word has length 19 [2021-11-25 18:59:05,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:05,318 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 295 transitions. [2021-11-25 18:59:05,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 295 transitions. [2021-11-25 18:59:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:59:05,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:05,320 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] [2021-11-25 18:59:05,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 18:59:05,320 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1116123431, now seen corresponding path program 1 times [2021-11-25 18:59:05,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:05,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482897583] [2021-11-25 18:59:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:05,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:05,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:05,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482897583] [2021-11-25 18:59:05,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482897583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:05,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:05,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:59:05,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106737301] [2021-11-25 18:59:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:05,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:59:05,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:05,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:59:05,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:05,396 INFO L87 Difference]: Start difference. First operand 248 states and 295 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:05,710 INFO L93 Difference]: Finished difference Result 279 states and 315 transitions. [2021-11-25 18:59:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:59:05,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-25 18:59:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:05,712 INFO L225 Difference]: With dead ends: 279 [2021-11-25 18:59:05,712 INFO L226 Difference]: Without dead ends: 279 [2021-11-25 18:59:05,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:59:05,713 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 619 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:05,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 936 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:05,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-25 18:59:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 248. [2021-11-25 18:59:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 173 states have (on average 1.699421965317919) internal successors, (294), 247 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 294 transitions. [2021-11-25 18:59:05,720 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 294 transitions. Word has length 21 [2021-11-25 18:59:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:05,720 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 294 transitions. [2021-11-25 18:59:05,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 294 transitions. [2021-11-25 18:59:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:59:05,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:05,721 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] [2021-11-25 18:59:05,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 18:59:05,722 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash -936319035, now seen corresponding path program 1 times [2021-11-25 18:59:05,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:05,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675750647] [2021-11-25 18:59:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:05,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:05,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:05,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675750647] [2021-11-25 18:59:05,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675750647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:05,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:05,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:59:05,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196598704] [2021-11-25 18:59:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:05,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:59:05,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:05,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:59:05,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:59:05,793 INFO L87 Difference]: Start difference. First operand 248 states and 294 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:06,117 INFO L93 Difference]: Finished difference Result 333 states and 377 transitions. [2021-11-25 18:59:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:59:06,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-25 18:59:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:06,119 INFO L225 Difference]: With dead ends: 333 [2021-11-25 18:59:06,119 INFO L226 Difference]: Without dead ends: 333 [2021-11-25 18:59:06,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:06,120 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 217 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:06,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 995 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-25 18:59:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 236. [2021-11-25 18:59:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 161 states have (on average 1.6956521739130435) internal successors, (273), 235 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) [2021-11-25 18:59:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 273 transitions. [2021-11-25 18:59:06,127 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 273 transitions. Word has length 21 [2021-11-25 18:59:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:06,131 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 273 transitions. [2021-11-25 18:59:06,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 273 transitions. [2021-11-25 18:59:06,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 18:59:06,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:06,135 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] [2021-11-25 18:59:06,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 18:59:06,135 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr151ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1038856689, now seen corresponding path program 1 times [2021-11-25 18:59:06,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:06,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819426686] [2021-11-25 18:59:06,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:06,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:06,220 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:06,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819426686] [2021-11-25 18:59:06,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819426686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:06,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:06,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:06,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175993599] [2021-11-25 18:59:06,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:06,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:06,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:06,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:06,222 INFO L87 Difference]: Start difference. First operand 236 states and 273 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-11-25 18:59:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:06,491 INFO L93 Difference]: Finished difference Result 243 states and 273 transitions. [2021-11-25 18:59:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:59:06,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 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 [2021-11-25 18:59:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:06,493 INFO L225 Difference]: With dead ends: 243 [2021-11-25 18:59:06,493 INFO L226 Difference]: Without dead ends: 241 [2021-11-25 18:59:06,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:06,494 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 24 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:06,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 461 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:59:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-25 18:59:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2021-11-25 18:59:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 160 states have (on average 1.69375) internal successors, (271), 234 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 271 transitions. [2021-11-25 18:59:06,501 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 271 transitions. Word has length 22 [2021-11-25 18:59:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:06,501 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 271 transitions. [2021-11-25 18:59:06,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-11-25 18:59:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 271 transitions. [2021-11-25 18:59:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 18:59:06,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:06,502 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] [2021-11-25 18:59:06,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 18:59:06,503 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash 41868091, now seen corresponding path program 1 times [2021-11-25 18:59:06,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:06,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452128101] [2021-11-25 18:59:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:06,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:59:06,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:06,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452128101] [2021-11-25 18:59:06,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452128101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:06,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:06,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:59:06,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136538904] [2021-11-25 18:59:06,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:06,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:06,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:06,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:06,582 INFO L87 Difference]: Start difference. First operand 235 states and 271 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) [2021-11-25 18:59:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:06,830 INFO L93 Difference]: Finished difference Result 249 states and 288 transitions. [2021-11-25 18:59:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:59:06,832 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 23 [2021-11-25 18:59:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:06,833 INFO L225 Difference]: With dead ends: 249 [2021-11-25 18:59:06,833 INFO L226 Difference]: Without dead ends: 249 [2021-11-25 18:59:06,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:59:06,834 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 47 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:06,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 484 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:06,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-25 18:59:06,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 234. [2021-11-25 18:59:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 160 states have (on average 1.6875) internal successors, (270), 233 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) [2021-11-25 18:59:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 270 transitions. [2021-11-25 18:59:06,842 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 270 transitions. Word has length 23 [2021-11-25 18:59:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:06,842 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 270 transitions. [2021-11-25 18:59:06,842 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) [2021-11-25 18:59:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 270 transitions. [2021-11-25 18:59:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 18:59:06,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:06,843 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] [2021-11-25 18:59:06,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 18:59:06,843 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash 41868092, now seen corresponding path program 1 times [2021-11-25 18:59:06,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:06,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762238114] [2021-11-25 18:59:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:06,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:06,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:06,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762238114] [2021-11-25 18:59:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762238114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:06,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:06,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:59:06,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734901058] [2021-11-25 18:59:06,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:06,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:59:06,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:06,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:59:06,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:59:06,974 INFO L87 Difference]: Start difference. First operand 234 states and 270 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:07,680 INFO L93 Difference]: Finished difference Result 345 states and 400 transitions. [2021-11-25 18:59:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:59:07,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-25 18:59:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:07,683 INFO L225 Difference]: With dead ends: 345 [2021-11-25 18:59:07,683 INFO L226 Difference]: Without dead ends: 345 [2021-11-25 18:59:07,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:59:07,685 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 405 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:07,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 803 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:59:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-25 18:59:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 233. [2021-11-25 18:59:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.68125) internal successors, (269), 232 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 269 transitions. [2021-11-25 18:59:07,692 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 269 transitions. Word has length 23 [2021-11-25 18:59:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:07,692 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 269 transitions. [2021-11-25 18:59:07,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 269 transitions. [2021-11-25 18:59:07,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:59:07,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:07,695 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] [2021-11-25 18:59:07,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 18:59:07,695 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr123REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1764034550, now seen corresponding path program 1 times [2021-11-25 18:59:07,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:07,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967698827] [2021-11-25 18:59:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:07,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:07,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:07,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967698827] [2021-11-25 18:59:07,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967698827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:07,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:07,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:07,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687518162] [2021-11-25 18:59:07,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:07,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:07,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:07,730 INFO L87 Difference]: Start difference. First operand 233 states and 269 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:07,799 INFO L93 Difference]: Finished difference Result 220 states and 246 transitions. [2021-11-25 18:59:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-25 18:59:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:07,801 INFO L225 Difference]: With dead ends: 220 [2021-11-25 18:59:07,801 INFO L226 Difference]: Without dead ends: 203 [2021-11-25 18:59:07,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:07,803 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 26 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:07,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 334 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:59:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-25 18:59:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-11-25 18:59:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 130 states have (on average 1.7615384615384615) internal successors, (229), 202 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) [2021-11-25 18:59:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2021-11-25 18:59:07,815 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 24 [2021-11-25 18:59:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:07,815 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2021-11-25 18:59:07,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2021-11-25 18:59:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:59:07,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:07,816 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] [2021-11-25 18:59:07,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 18:59:07,817 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1592358732, now seen corresponding path program 1 times [2021-11-25 18:59:07,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:07,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656915299] [2021-11-25 18:59:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:07,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:07,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:07,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656915299] [2021-11-25 18:59:07,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656915299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:07,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816583855] [2021-11-25 18:59:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:07,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:07,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:07,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:08,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:59:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:08,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 18:59:08,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:08,235 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 [2021-11-25 18:59:08,309 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:59:08,310 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 11 treesize of output 11 [2021-11-25 18:59:08,454 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 14 [2021-11-25 18:59:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:08,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:59:08,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816583855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:08,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:59:08,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2021-11-25 18:59:08,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014628880] [2021-11-25 18:59:08,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:08,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:59:08,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:08,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:59:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:59:08,474 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 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) [2021-11-25 18:59:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:08,966 INFO L93 Difference]: Finished difference Result 334 states and 375 transitions. [2021-11-25 18:59:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:59:08,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 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 [2021-11-25 18:59:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:08,969 INFO L225 Difference]: With dead ends: 334 [2021-11-25 18:59:08,969 INFO L226 Difference]: Without dead ends: 334 [2021-11-25 18:59:08,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:59:08,971 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 485 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:08,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 424 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:59:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-25 18:59:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 206. [2021-11-25 18:59:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 205 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) [2021-11-25 18:59:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2021-11-25 18:59:08,978 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 25 [2021-11-25 18:59:08,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:08,978 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2021-11-25 18:59:08,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 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) [2021-11-25 18:59:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2021-11-25 18:59:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:59:08,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:08,979 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] [2021-11-25 18:59:09,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:09,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-25 18:59:09,183 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1592358733, now seen corresponding path program 1 times [2021-11-25 18:59:09,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:09,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71495073] [2021-11-25 18:59:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:09,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:09,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:09,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71495073] [2021-11-25 18:59:09,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71495073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:09,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279423539] [2021-11-25 18:59:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:09,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:09,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:09,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:09,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:59:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:09,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 18:59:09,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:09,516 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 14 [2021-11-25 18:59:09,547 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 14 [2021-11-25 18:59:09,570 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 14 [2021-11-25 18:59:09,596 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:59:09,597 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 11 treesize of output 11 [2021-11-25 18:59:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:59:09,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:59:09,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279423539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:09,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:59:09,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-11-25 18:59:09,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230766183] [2021-11-25 18:59:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:09,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:09,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:59:09,610 INFO L87 Difference]: Start difference. First operand 206 states and 236 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:09,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:09,800 INFO L93 Difference]: Finished difference Result 227 states and 260 transitions. [2021-11-25 18:59:09,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:59:09,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2021-11-25 18:59:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:09,802 INFO L225 Difference]: With dead ends: 227 [2021-11-25 18:59:09,802 INFO L226 Difference]: Without dead ends: 227 [2021-11-25 18:59:09,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:59:09,803 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 445 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:09,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 187 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-25 18:59:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 207. [2021-11-25 18:59:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 206 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2021-11-25 18:59:09,810 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 25 [2021-11-25 18:59:09,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:09,810 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2021-11-25 18:59:09,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2021-11-25 18:59:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 18:59:09,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:09,811 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] [2021-11-25 18:59:09,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:10,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:10,035 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:10,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1726985257, now seen corresponding path program 1 times [2021-11-25 18:59:10,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:10,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117561440] [2021-11-25 18:59:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:10,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:10,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117561440] [2021-11-25 18:59:10,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117561440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:10,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:10,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 18:59:10,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038820175] [2021-11-25 18:59:10,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:10,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:59:10,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:59:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:59:10,390 INFO L87 Difference]: Start difference. First operand 207 states and 237 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) [2021-11-25 18:59:11,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:11,358 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2021-11-25 18:59:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:59:11,358 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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 [2021-11-25 18:59:11,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:11,359 INFO L225 Difference]: With dead ends: 208 [2021-11-25 18:59:11,359 INFO L226 Difference]: Without dead ends: 208 [2021-11-25 18:59:11,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:59:11,361 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 280 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:11,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1145 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:59:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-25 18:59:11,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2021-11-25 18:59:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.7352941176470589) internal successors, (236), 206 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) [2021-11-25 18:59:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2021-11-25 18:59:11,366 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 26 [2021-11-25 18:59:11,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:11,367 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2021-11-25 18:59:11,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) [2021-11-25 18:59:11,367 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2021-11-25 18:59:11,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:59:11,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:11,368 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] [2021-11-25 18:59:11,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 18:59:11,368 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1527445437, now seen corresponding path program 1 times [2021-11-25 18:59:11,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:11,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007926355] [2021-11-25 18:59:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:11,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:11,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:11,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007926355] [2021-11-25 18:59:11,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007926355] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:11,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533591181] [2021-11-25 18:59:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:11,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:11,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:11,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:11,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:59:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:11,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-25 18:59:11,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:11,807 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 [2021-11-25 18:59:11,843 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 13 treesize of output 9 [2021-11-25 18:59:11,851 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 [2021-11-25 18:59:11,904 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:59:11,904 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 11 treesize of output 11 [2021-11-25 18:59:11,938 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 [2021-11-25 18:59:11,943 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 23 treesize of output 22 [2021-11-25 18:59:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:12,006 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 18:59:12,011 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-11-25 18:59:12,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:12,018 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 18:59:12,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:12,102 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 18:59:12,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:12,121 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 18:59:12,121 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-11-25 18:59:12,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:12,229 INFO L354 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2021-11-25 18:59:12,229 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2021-11-25 18:59:12,240 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 18:59:12,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-11-25 18:59:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:12,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:59:13,930 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_869 Int) (v_ArrVal_866 Int)) (= 0 (let ((.cse1 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (select (let ((.cse0 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_ArrVal_869))) (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse0) (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|))) (+ (select (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse1 v_ArrVal_866) |ULTIMATE.start_main_~#iter~0#1.offset|) 4))))) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_869 Int) (v_ArrVal_866 Int)) (= (let ((.cse3 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse2 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse3 v_ArrVal_866))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse2) (select (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse3 v_ArrVal_869) |ULTIMATE.start_main_~#iter~0#1.offset|)) (+ (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|) 4)))) 0))) is different from false [2021-11-25 18:59:15,137 INFO L354 Elim1Store]: treesize reduction 106, result has 22.1 percent of original size [2021-11-25 18:59:15,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 7821 treesize of output 6200 [2021-11-25 18:59:15,186 INFO L354 Elim1Store]: treesize reduction 82, result has 21.2 percent of original size [2021-11-25 18:59:15,187 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 2 case distinctions, treesize of input 9282 treesize of output 7270 [2021-11-25 18:59:15,255 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:15,255 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 7270 treesize of output 6896 [2021-11-25 18:59:15,302 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:15,302 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 6896 treesize of output 6522 [2021-11-25 18:59:15,424 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-25 18:59:15,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [423194516] [2021-11-25 18:59:15,448 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 18:59:15,448 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:59:15,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:59:15,458 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:59:15,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:59:15,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,555 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 [2021-11-25 18:59:15,573 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 13 treesize of output 9 [2021-11-25 18:59:15,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,581 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 34 treesize of output 21 [2021-11-25 18:59:15,589 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 13 treesize of output 9 [2021-11-25 18:59:15,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,618 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 26 treesize of output 28 [2021-11-25 18:59:15,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,635 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 [2021-11-25 18:59:15,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-11-25 18:59:15,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,654 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 25 treesize of output 13 [2021-11-25 18:59:15,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,680 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 21 treesize of output 20 [2021-11-25 18:59:15,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,697 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 46 treesize of output 36 [2021-11-25 18:59:15,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,708 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 21 treesize of output 20 [2021-11-25 18:59:15,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,739 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 30 treesize of output 32 [2021-11-25 18:59:15,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,751 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 30 treesize of output 32 [2021-11-25 18:59:15,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,766 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 50 treesize of output 36 [2021-11-25 18:59:15,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,821 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 38 treesize of output 47 [2021-11-25 18:59:15,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:15,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:15,926 INFO L354 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2021-11-25 18:59:15,926 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 165 treesize of output 133 [2021-11-25 18:59:15,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,946 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 66 treesize of output 44 [2021-11-25 18:59:15,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:15,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2021-11-25 18:59:16,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,044 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-25 18:59:16,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 197 treesize of output 153 [2021-11-25 18:59:16,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 55 [2021-11-25 18:59:16,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,111 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 58 treesize of output 51 [2021-11-25 18:59:16,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 91 [2021-11-25 18:59:16,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,218 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 18:59:16,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 193 treesize of output 160 [2021-11-25 18:59:16,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 59 [2021-11-25 18:59:16,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 98 [2021-11-25 18:59:16,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,451 INFO L354 Elim1Store]: treesize reduction 80, result has 27.3 percent of original size [2021-11-25 18:59:16,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 487 treesize of output 451 [2021-11-25 18:59:16,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,531 INFO L354 Elim1Store]: treesize reduction 156, result has 26.4 percent of original size [2021-11-25 18:59:16,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 611 treesize of output 626 [2021-11-25 18:59:16,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:16,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:16,567 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-25 18:59:16,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 693 treesize of output 646 [2021-11-25 18:59:17,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:17,425 INFO L354 Elim1Store]: treesize reduction 338, result has 16.7 percent of original size [2021-11-25 18:59:17,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 2646 treesize of output 2547 [2021-11-25 18:59:19,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:19,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:19,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:19,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:19,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:19,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:19,315 INFO L354 Elim1Store]: treesize reduction 238, result has 17.1 percent of original size [2021-11-25 18:59:19,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 4151 treesize of output 2252 [2021-11-25 18:59:19,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:19,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:19,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:19,528 INFO L354 Elim1Store]: treesize reduction 384, result has 13.1 percent of original size [2021-11-25 18:59:19,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 4152 treesize of output 3270 [2021-11-25 18:59:19,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:19,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:19,620 INFO L354 Elim1Store]: treesize reduction 159, result has 8.6 percent of original size [2021-11-25 18:59:19,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4057 treesize of output 3602 [2021-11-25 18:59:22,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:22,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:22,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:22,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:22,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:22,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:22,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:22,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:22,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:22,440 INFO L354 Elim1Store]: treesize reduction 274, result has 11.0 percent of original size [2021-11-25 18:59:22,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 13040 treesize of output 6905 [2021-11-25 18:59:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:22,864 INFO L354 Elim1Store]: treesize reduction 458, result has 14.4 percent of original size [2021-11-25 18:59:22,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 13041 treesize of output 12415 [2021-11-25 18:59:22,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:23,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:23,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:23,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:23,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:23,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:23,283 INFO L354 Elim1Store]: treesize reduction 448, result has 9.1 percent of original size [2021-11-25 18:59:23,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 12973 treesize of output 10053 [2021-11-25 18:59:23,600 INFO L354 Elim1Store]: treesize reduction 208, result has 24.1 percent of original size [2021-11-25 18:59:23,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 8 case distinctions, treesize of input 12901 treesize of output 11393 [2021-11-25 18:59:37,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,325 INFO L354 Elim1Store]: treesize reduction 262, result has 11.5 percent of original size [2021-11-25 18:59:37,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 38987 treesize of output 20729 [2021-11-25 18:59:37,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,776 INFO L354 Elim1Store]: treesize reduction 432, result has 9.4 percent of original size [2021-11-25 18:59:37,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 39005 treesize of output 30438 [2021-11-25 18:59:38,108 INFO L354 Elim1Store]: treesize reduction 292, result has 20.0 percent of original size [2021-11-25 18:59:38,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 38998 treesize of output 35326 [2021-11-25 18:59:43,505 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 [2021-11-25 18:59:43,510 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 [2021-11-25 18:59:43,514 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 [2021-11-25 18:59:43,538 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:59:43,539 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 18:59:43,561 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:59:43,561 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 [2021-11-25 18:59:43,578 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 23 treesize of output 22 [2021-11-25 18:59:43,584 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 13 treesize of output 9 [2021-11-25 18:59:43,592 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 19 treesize of output 1 [2021-11-25 18:59:43,609 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 [2021-11-25 18:59:43,632 INFO L354 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2021-11-25 18:59:43,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-25 18:59:43,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:43,644 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 25 treesize of output 13 [2021-11-25 18:59:43,675 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:59:43,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 33 [2021-11-25 18:59:43,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:43,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-11-25 18:59:43,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-25 18:59:43,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 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 [2021-11-25 18:59:43,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 18:59:43,741 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 [2021-11-25 18:59:43,746 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 [2021-11-25 18:59:43,751 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 [2021-11-25 18:59:43,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 18:59:43,797 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 [2021-11-25 18:59:43,817 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 [2021-11-25 18:59:43,823 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 [2021-11-25 18:59:43,836 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 15 treesize of output 1 [2021-11-25 18:59:43,885 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 19 treesize of output 1 [2021-11-25 18:59:43,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:43,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:43,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:43,899 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:59:43,899 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 25 treesize of output 27 [2021-11-25 18:59:43,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:43,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:43,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:43,914 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:59:43,914 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 25 treesize of output 27 [2021-11-25 18:59:44,000 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 19 treesize of output 1 [2021-11-25 18:59:44,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,058 INFO L354 Elim1Store]: treesize reduction 74, result has 22.9 percent of original size [2021-11-25 18:59:44,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 69 treesize of output 70 [2021-11-25 18:59:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,104 INFO L354 Elim1Store]: treesize reduction 74, result has 22.9 percent of original size [2021-11-25 18:59:44,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 65 treesize of output 66 [2021-11-25 18:59:44,181 INFO L354 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2021-11-25 18:59:44,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 37 [2021-11-25 18:59:44,191 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 15 treesize of output 1 [2021-11-25 18:59:44,214 INFO L354 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2021-11-25 18:59:44,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 37 [2021-11-25 18:59:45,673 INFO L354 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2021-11-25 18:59:45,674 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2021-11-25 18:59:46,039 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:59:46,039 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 [2021-11-25 18:59:46,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:46,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 18:59:46,139 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:59:46,139 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 [2021-11-25 18:59:46,219 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 [2021-11-25 18:59:46,224 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 [2021-11-25 18:59:46,230 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 [2021-11-25 18:59:46,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:46,245 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 [2021-11-25 18:59:46,250 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 [2021-11-25 18:59:46,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:46,257 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 [2021-11-25 18:59:46,271 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:59:46,272 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 18:59:46,293 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:59:46,294 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 [2021-11-25 18:59:46,297 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:59:48,444 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16232#(and (= (select |#valid| |ULTIMATE.start_main_~#iter~0#1.base|) 1) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_#t~mem13#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= |ULTIMATE.start_main_~#iter~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.base|) (<= (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#iter~0#1.base|)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~#iter~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (not (= 1 (select |#valid| |ULTIMATE.start_main_#t~mem13#1.base|))) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_11| Int) (|v_ULTIMATE.start_main_#t~mem11#1.base_12| Int)) (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_12|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4))) (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_12|) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_12|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4))) (or (= |v_ULTIMATE.start_main_#t~mem11#1.base_12| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_12|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4))) (not (= |ULTIMATE.start_main_~#iter~0#1.offset| (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4))) (not (= |ULTIMATE.start_main_~#iter~0#1.base| |v_ULTIMATE.start_main_#t~mem11#1.base_12|))) (or (not (= |ULTIMATE.start_main_~#iter~0#1.offset| (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4))) (not (= |ULTIMATE.start_main_~#iter~0#1.base| |v_ULTIMATE.start_main_#t~mem11#1.base_12|)) (= |v_ULTIMATE.start_main_#t~mem11#1.offset_11| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_12|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4)))) (or (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_12|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4)) 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_12|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4)) 0))) (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_11| 4)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_11|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_12|)))) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)))' at error location [2021-11-25 18:59:48,444 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:59:48,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:59:48,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-25 18:59:48,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993988052] [2021-11-25 18:59:48,444 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 18:59:48,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:59:48,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:59:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1408, Unknown=1, NotChecked=76, Total=1640 [2021-11-25 18:59:48,446 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:48,997 INFO L93 Difference]: Finished difference Result 255 states and 289 transitions. [2021-11-25 18:59:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:59:48,998 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-25 18:59:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:49,000 INFO L225 Difference]: With dead ends: 255 [2021-11-25 18:59:49,000 INFO L226 Difference]: Without dead ends: 255 [2021-11-25 18:59:49,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=205, Invalid=1868, Unknown=1, NotChecked=88, Total=2162 [2021-11-25 18:59:49,002 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 53 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:49,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1079 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:59:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-25 18:59:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 229. [2021-11-25 18:59:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 158 states have (on average 1.639240506329114) internal successors, (259), 228 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 259 transitions. [2021-11-25 18:59:49,008 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 259 transitions. Word has length 27 [2021-11-25 18:59:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:49,009 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 259 transitions. [2021-11-25 18:59:49,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 259 transitions. [2021-11-25 18:59:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 18:59:49,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:49,010 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] [2021-11-25 18:59:49,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:49,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-25 18:59:49,235 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:49,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash 688966908, now seen corresponding path program 1 times [2021-11-25 18:59:49,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:49,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770063775] [2021-11-25 18:59:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:49,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:59:49,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:49,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770063775] [2021-11-25 18:59:49,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770063775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:49,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:49,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:49,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82204894] [2021-11-25 18:59:49,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:49,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:49,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:49,306 INFO L87 Difference]: Start difference. First operand 229 states and 259 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2021-11-25 18:59:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:49,514 INFO L93 Difference]: Finished difference Result 234 states and 264 transitions. [2021-11-25 18:59:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:59:49,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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 31 [2021-11-25 18:59:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:49,517 INFO L225 Difference]: With dead ends: 234 [2021-11-25 18:59:49,517 INFO L226 Difference]: Without dead ends: 234 [2021-11-25 18:59:49,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:59:49,518 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:49,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 604 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-25 18:59:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2021-11-25 18:59:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 162 states have (on average 1.623456790123457) internal successors, (263), 232 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 263 transitions. [2021-11-25 18:59:49,524 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 263 transitions. Word has length 31 [2021-11-25 18:59:49,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:49,525 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 263 transitions. [2021-11-25 18:59:49,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2021-11-25 18:59:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 263 transitions. [2021-11-25 18:59:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 18:59:49,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:49,526 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-25 18:59:49,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 18:59:49,526 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash 373171140, now seen corresponding path program 2 times [2021-11-25 18:59:49,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:49,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755411100] [2021-11-25 18:59:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:49,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:50,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:50,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755411100] [2021-11-25 18:59:50,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755411100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:50,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309644154] [2021-11-25 18:59:50,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:59:50,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:50,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:50,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:50,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:59:50,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 18:59:50,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:59:50,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-25 18:59:50,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:50,451 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 [2021-11-25 18:59:50,475 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:59:50,475 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 18 [2021-11-25 18:59:50,504 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:59:50,504 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 22 [2021-11-25 18:59:50,562 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 [2021-11-25 18:59:50,616 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 24 [2021-11-25 18:59:50,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:50,705 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-25 18:59:50,705 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 33 treesize of output 46 [2021-11-25 18:59:50,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:50,777 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 0 case distinctions, treesize of input 33 treesize of output 31 [2021-11-25 18:59:50,792 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 [2021-11-25 18:59:50,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:50,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:50,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:50,997 INFO L354 Elim1Store]: treesize reduction 143, result has 13.3 percent of original size [2021-11-25 18:59:50,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 77 treesize of output 60 [2021-11-25 18:59:51,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:51,002 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 86 treesize of output 73 [2021-11-25 18:59:51,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:51,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:51,326 INFO L354 Elim1Store]: treesize reduction 128, result has 12.9 percent of original size [2021-11-25 18:59:51,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 77 treesize of output 61 [2021-11-25 18:59:51,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:51,330 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 45 treesize of output 36 [2021-11-25 18:59:51,409 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 23 [2021-11-25 18:59:51,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:51,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:51,559 INFO L354 Elim1Store]: treesize reduction 125, result has 12.6 percent of original size [2021-11-25 18:59:51,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 48 [2021-11-25 18:59:51,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:51,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:51,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-11-25 18:59:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:51,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:59:51,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309644154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:51,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:59:51,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19] total 33 [2021-11-25 18:59:51,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201723981] [2021-11-25 18:59:51,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:51,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 18:59:51,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 18:59:51,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 18:59:51,778 INFO L87 Difference]: Start difference. First operand 233 states and 263 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:53,550 INFO L93 Difference]: Finished difference Result 249 states and 277 transitions. [2021-11-25 18:59:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:59:53,551 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-25 18:59:53,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:53,552 INFO L225 Difference]: With dead ends: 249 [2021-11-25 18:59:53,552 INFO L226 Difference]: Without dead ends: 249 [2021-11-25 18:59:53,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=340, Invalid=1822, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 18:59:53,554 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 154 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:53,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1347 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1292 Invalid, 0 Unknown, 442 Unchecked, 1.0s Time] [2021-11-25 18:59:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-25 18:59:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 232. [2021-11-25 18:59:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 162 states have (on average 1.617283950617284) internal successors, (262), 231 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 262 transitions. [2021-11-25 18:59:53,560 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 262 transitions. Word has length 33 [2021-11-25 18:59:53,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:53,561 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 262 transitions. [2021-11-25 18:59:53,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:53,561 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 262 transitions. [2021-11-25 18:59:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 18:59:53,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:53,562 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-25 18:59:53,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:53,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:53,775 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 18:59:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash 373171141, now seen corresponding path program 1 times [2021-11-25 18:59:53,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:53,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410640956] [2021-11-25 18:59:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:53,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:54,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410640956] [2021-11-25 18:59:54,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410640956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442893728] [2021-11-25 18:59:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:54,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:54,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:54,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:54,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:59:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:54,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-25 18:59:54,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:54,506 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 [2021-11-25 18:59:54,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:54,605 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 14 treesize of output 16 [2021-11-25 18:59:54,621 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:59:54,622 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 17 treesize of output 21 [2021-11-25 18:59:54,665 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:59:54,666 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 17 treesize of output 21 [2021-11-25 18:59:54,680 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 14 treesize of output 16 [2021-11-25 18:59:54,749 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 [2021-11-25 18:59:54,757 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 13 treesize of output 9 [2021-11-25 18:59:54,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:54,871 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:59:54,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2021-11-25 18:59:54,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:54,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 18:59:54,922 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 38 treesize of output 29 [2021-11-25 18:59:54,924 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 23 treesize of output 22 [2021-11-25 18:59:55,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,011 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 18:59:55,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,024 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 18:59:55,025 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 52 [2021-11-25 18:59:55,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,131 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 18:59:55,131 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 52 [2021-11-25 18:59:55,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,135 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 18:59:55,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:55,321 INFO L354 Elim1Store]: treesize reduction 109, result has 9.2 percent of original size [2021-11-25 18:59:55,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 67 [2021-11-25 18:59:55,327 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:59:55,328 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 1 case distinctions, treesize of input 36 treesize of output 33 [2021-11-25 18:59:55,417 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 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-25 18:59:55,420 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 0 case distinctions, treesize of input 45 treesize of output 21 [2021-11-25 18:59:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:55,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:59:57,816 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_1293 Int) (v_ArrVal_1292 Int)) (<= 0 (let ((.cse1 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse1 v_ArrVal_1292))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse0) (select (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_ArrVal_1293) |ULTIMATE.start_main_~#iter~0#1.offset|)) (+ (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|) 4)))))) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_1293 Int) (v_ArrVal_1292 Int)) (let ((.cse6 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse2 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse6 v_ArrVal_1292)) (.cse5 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_1293))) (let ((.cse3 (select .cse5 |ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse4 (+ (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse2) .cse3) .cse4) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse5) .cse3) .cse4)))))))) is different from false [2021-11-25 18:59:58,510 INFO L354 Elim1Store]: treesize reduction 134, result has 6.9 percent of original size [2021-11-25 18:59:58,510 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 2 case distinctions, treesize of input 6785 treesize of output 5662 [2021-11-25 18:59:58,563 INFO L354 Elim1Store]: treesize reduction 191, result has 11.6 percent of original size [2021-11-25 18:59:58,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 56212 treesize of output 43112 [2021-11-25 18:59:58,712 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:58,713 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 43112 treesize of output 41010 [2021-11-25 18:59:58,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:58,873 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 41010 treesize of output 38908 [2021-11-25 18:59:59,125 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-25 18:59:59,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1665103560] [2021-11-25 18:59:59,128 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 18:59:59,128 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:59:59,128 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:59:59,129 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:59:59,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:59:59,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,165 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 [2021-11-25 18:59:59,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,182 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 34 treesize of output 21 [2021-11-25 18:59:59,190 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 13 treesize of output 9 [2021-11-25 18:59:59,198 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 13 treesize of output 9 [2021-11-25 18:59:59,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,221 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 26 treesize of output 28 [2021-11-25 18:59:59,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,236 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 [2021-11-25 18:59:59,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-11-25 18:59:59,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,260 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 25 treesize of output 13 [2021-11-25 18:59:59,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,281 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 21 treesize of output 20 [2021-11-25 18:59:59,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,293 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 46 treesize of output 36 [2021-11-25 18:59:59,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,309 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 21 treesize of output 20 [2021-11-25 18:59:59,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,337 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 30 treesize of output 32 [2021-11-25 18:59:59,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,351 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 30 treesize of output 32 [2021-11-25 18:59:59,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,364 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 50 treesize of output 36 [2021-11-25 18:59:59,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,416 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 38 treesize of output 47 [2021-11-25 18:59:59,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,480 INFO L354 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2021-11-25 18:59:59,481 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 113 [2021-11-25 18:59:59,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-25 18:59:59,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,519 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 58 treesize of output 40 [2021-11-25 18:59:59,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,606 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-25 18:59:59,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 131 [2021-11-25 18:59:59,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 55 [2021-11-25 18:59:59,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,685 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 50 treesize of output 47 [2021-11-25 18:59:59,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:59:59,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,765 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 18:59:59,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 138 [2021-11-25 18:59:59,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2021-11-25 18:59:59,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-25 18:59:59,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,902 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 18:59:59,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 483 treesize of output 492 [2021-11-25 18:59:59,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,967 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-25 18:59:59,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 506 treesize of output 466 [2021-11-25 18:59:59,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:59,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:59,995 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-25 18:59:59,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 611 treesize of output 570 [2021-11-25 19:00:00,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:00,543 INFO L354 Elim1Store]: treesize reduction 296, result has 15.9 percent of original size [2021-11-25 19:00:00,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 2282 treesize of output 2195 [2021-11-25 19:00:01,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:01,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:01,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:01,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:01,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:01,545 INFO L354 Elim1Store]: treesize reduction 216, result has 16.0 percent of original size [2021-11-25 19:00:01,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 2906 treesize of output 1725 [2021-11-25 19:00:01,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:01,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:01,621 INFO L354 Elim1Store]: treesize reduction 147, result has 9.3 percent of original size [2021-11-25 19:00:01,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2884 treesize of output 2575 [2021-11-25 19:00:01,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:01,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:01,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:01,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:01,731 INFO L354 Elim1Store]: treesize reduction 298, result has 17.9 percent of original size [2021-11-25 19:00:01,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 2896 treesize of output 2593 [2021-11-25 19:00:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:02,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:02,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:02,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:02,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:02,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:03,138 INFO L354 Elim1Store]: treesize reduction 254, result has 9.9 percent of original size [2021-11-25 19:00:03,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 8429 treesize of output 4944 [2021-11-25 19:00:03,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:03,431 INFO L354 Elim1Store]: treesize reduction 410, result has 13.7 percent of original size [2021-11-25 19:00:03,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 8430 treesize of output 8024 [2021-11-25 19:00:03,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:03,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:03,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:03,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:03,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:03,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:03,583 INFO L354 Elim1Store]: treesize reduction 330, result has 8.8 percent of original size [2021-11-25 19:00:03,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 8399 treesize of output 7350 [2021-11-25 19:00:03,712 INFO L354 Elim1Store]: treesize reduction 184, result has 22.7 percent of original size [2021-11-25 19:00:03,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 8 case distinctions, treesize of input 8368 treesize of output 7416 [2021-11-25 19:00:10,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:10,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:10,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:10,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:10,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:10,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:10,823 INFO L354 Elim1Store]: treesize reduction 242, result has 10.4 percent of original size [2021-11-25 19:00:10,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 17681 treesize of output 10433 [2021-11-25 19:00:10,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:10,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:10,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:10,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:10,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:10,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:11,031 INFO L354 Elim1Store]: treesize reduction 318, result has 9.1 percent of original size [2021-11-25 19:00:11,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 17699 treesize of output 15561 [2021-11-25 19:00:11,229 INFO L354 Elim1Store]: treesize reduction 262, result has 18.9 percent of original size [2021-11-25 19:00:11,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 17692 treesize of output 16168 [2021-11-25 19:00:13,242 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 13 treesize of output 9 [2021-11-25 19:00:13,247 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 19 treesize of output 1 [2021-11-25 19:00:13,251 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 [2021-11-25 19:00:13,273 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:00:13,274 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 19:00:13,296 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:13,296 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 [2021-11-25 19:00:13,313 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 13 treesize of output 9 [2021-11-25 19:00:13,321 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 19 treesize of output 1 [2021-11-25 19:00:13,327 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 23 treesize of output 22 [2021-11-25 19:00:13,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,350 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 34 treesize of output 25 [2021-11-25 19:00:13,356 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 [2021-11-25 19:00:13,385 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:00:13,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 33 [2021-11-25 19:00:13,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-11-25 19:00:13,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2021-11-25 19:00:13,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:00:13,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-25 19:00:13,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-25 19:00:13,456 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 [2021-11-25 19:00:13,460 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 [2021-11-25 19:00:13,465 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 [2021-11-25 19:00:13,499 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 [2021-11-25 19:00:13,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 19:00:13,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-25 19:00:13,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:00:13,532 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 [2021-11-25 19:00:13,559 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 19 treesize of output 1 [2021-11-25 19:00:13,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:13,573 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:00:13,574 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 25 treesize of output 27 [2021-11-25 19:00:13,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:13,585 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:00:13,585 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 25 treesize of output 27 [2021-11-25 19:00:13,661 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 19 treesize of output 1 [2021-11-25 19:00:13,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:13,710 INFO L354 Elim1Store]: treesize reduction 74, result has 22.9 percent of original size [2021-11-25 19:00:13,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 69 treesize of output 70 [2021-11-25 19:00:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:13,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:13,746 INFO L354 Elim1Store]: treesize reduction 74, result has 22.9 percent of original size [2021-11-25 19:00:13,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 69 treesize of output 70 [2021-11-25 19:00:13,813 INFO L354 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2021-11-25 19:00:13,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 37 [2021-11-25 19:00:13,823 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 15 treesize of output 1 [2021-11-25 19:00:13,853 INFO L354 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2021-11-25 19:00:13,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 37 [2021-11-25 19:00:14,291 INFO L354 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2021-11-25 19:00:14,291 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2021-11-25 19:00:14,464 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2021-11-25 19:00:14,498 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:14,498 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 [2021-11-25 19:00:14,544 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 [2021-11-25 19:00:14,549 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 [2021-11-25 19:00:14,553 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 [2021-11-25 19:00:14,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:14,570 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 [2021-11-25 19:00:14,584 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:14,585 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 [2021-11-25 19:00:14,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:14,593 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 25 treesize of output 13 [2021-11-25 19:00:14,598 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 [2021-11-25 19:00:14,609 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 [2021-11-25 19:00:14,611 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:00:17,346 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18058#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~#iter~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.base|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)))' at error location [2021-11-25 19:00:17,346 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:00:17,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:00:17,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-25 19:00:17,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60393486] [2021-11-25 19:00:17,347 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:00:17,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:00:17,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:00:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2870, Unknown=1, NotChecked=108, Total=3192 [2021-11-25 19:00:17,348 INFO L87 Difference]: Start difference. First operand 232 states and 262 transitions. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:18,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:18,693 INFO L93 Difference]: Finished difference Result 344 states and 393 transitions. [2021-11-25 19:00:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:00:18,693 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-25 19:00:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:18,695 INFO L225 Difference]: With dead ends: 344 [2021-11-25 19:00:18,695 INFO L226 Difference]: Without dead ends: 344 [2021-11-25 19:00:18,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=377, Invalid=4048, Unknown=1, NotChecked=130, Total=4556 [2021-11-25 19:00:18,697 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 837 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:18,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 1157 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 19:00:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-25 19:00:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 231. [2021-11-25 19:00:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 162 states have (on average 1.6111111111111112) internal successors, (261), 230 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2021-11-25 19:00:18,703 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 33 [2021-11-25 19:00:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:18,704 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2021-11-25 19:00:18,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2021-11-25 19:00:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:00:18,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:18,705 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] [2021-11-25 19:00:18,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:18,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:18,919 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:00:18,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:18,920 INFO L85 PathProgramCache]: Analyzing trace with hash 671181745, now seen corresponding path program 1 times [2021-11-25 19:00:18,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:18,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339995700] [2021-11-25 19:00:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:18,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:19,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:19,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339995700] [2021-11-25 19:00:19,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339995700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:19,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:19,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:00:19,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533103348] [2021-11-25 19:00:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:19,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:00:19,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:00:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:00:19,041 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:19,544 INFO L93 Difference]: Finished difference Result 356 states and 407 transitions. [2021-11-25 19:00:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:00:19,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-25 19:00:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:19,546 INFO L225 Difference]: With dead ends: 356 [2021-11-25 19:00:19,546 INFO L226 Difference]: Without dead ends: 356 [2021-11-25 19:00:19,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:00:19,547 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 721 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:19,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 600 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:00:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-25 19:00:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 284. [2021-11-25 19:00:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 215 states have (on average 1.613953488372093) internal successors, (347), 283 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 347 transitions. [2021-11-25 19:00:19,554 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 347 transitions. Word has length 33 [2021-11-25 19:00:19,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:19,555 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 347 transitions. [2021-11-25 19:00:19,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 347 transitions. [2021-11-25 19:00:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:00:19,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:19,556 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, 1, 1] [2021-11-25 19:00:19,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 19:00:19,556 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:00:19,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:19,557 INFO L85 PathProgramCache]: Analyzing trace with hash 944318581, now seen corresponding path program 1 times [2021-11-25 19:00:19,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:19,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103094200] [2021-11-25 19:00:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:19,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:19,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:19,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103094200] [2021-11-25 19:00:19,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103094200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:19,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:19,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:00:19,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379876839] [2021-11-25 19:00:19,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:19,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:00:19,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:00:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:19,630 INFO L87 Difference]: Start difference. First operand 284 states and 347 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:19,971 INFO L93 Difference]: Finished difference Result 386 states and 435 transitions. [2021-11-25 19:00:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:00:19,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-11-25 19:00:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:19,974 INFO L225 Difference]: With dead ends: 386 [2021-11-25 19:00:19,974 INFO L226 Difference]: Without dead ends: 386 [2021-11-25 19:00:19,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:00:19,974 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 1153 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:19,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 654 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:00:19,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-25 19:00:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 283. [2021-11-25 19:00:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 214 states have (on average 1.602803738317757) internal successors, (343), 282 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 343 transitions. [2021-11-25 19:00:19,981 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 343 transitions. Word has length 37 [2021-11-25 19:00:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:19,981 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 343 transitions. [2021-11-25 19:00:19,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 343 transitions. [2021-11-25 19:00:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:00:19,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:19,982 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, 1, 1, 1] [2021-11-25 19:00:19,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 19:00:19,983 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:00:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1458941221, now seen corresponding path program 1 times [2021-11-25 19:00:19,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:19,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996235729] [2021-11-25 19:00:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:19,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:20,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:20,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996235729] [2021-11-25 19:00:20,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996235729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:20,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:20,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:00:20,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310337737] [2021-11-25 19:00:20,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:20,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:00:20,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:20,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:00:20,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:20,150 INFO L87 Difference]: Start difference. First operand 283 states and 343 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:20,799 INFO L93 Difference]: Finished difference Result 384 states and 431 transitions. [2021-11-25 19:00:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:00:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 [2021-11-25 19:00:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:20,802 INFO L225 Difference]: With dead ends: 384 [2021-11-25 19:00:20,802 INFO L226 Difference]: Without dead ends: 384 [2021-11-25 19:00:20,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:00:20,803 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 1072 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:20,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 216 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:00:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-25 19:00:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 304. [2021-11-25 19:00:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 235 states have (on average 1.6680851063829787) internal successors, (392), 303 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 392 transitions. [2021-11-25 19:00:20,810 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 392 transitions. Word has length 38 [2021-11-25 19:00:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:20,810 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 392 transitions. [2021-11-25 19:00:20,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 392 transitions. [2021-11-25 19:00:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:00:20,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:20,811 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, 1, 1, 1] [2021-11-25 19:00:20,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 19:00:20,811 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:00:20,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:20,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1457382676, now seen corresponding path program 1 times [2021-11-25 19:00:20,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:20,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692091451] [2021-11-25 19:00:20,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:20,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:00:20,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:20,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692091451] [2021-11-25 19:00:20,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692091451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:20,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:20,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:00:20,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114255954] [2021-11-25 19:00:20,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:20,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:00:20,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:00:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:00:20,885 INFO L87 Difference]: Start difference. First operand 304 states and 392 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:21,199 INFO L93 Difference]: Finished difference Result 398 states and 499 transitions. [2021-11-25 19:00:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:00:21,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-11-25 19:00:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:21,202 INFO L225 Difference]: With dead ends: 398 [2021-11-25 19:00:21,202 INFO L226 Difference]: Without dead ends: 398 [2021-11-25 19:00:21,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:00:21,203 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 312 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:21,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 297 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:00:21,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-25 19:00:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 308. [2021-11-25 19:00:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 239 states have (on average 1.6610878661087867) internal successors, (397), 307 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 397 transitions. [2021-11-25 19:00:21,209 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 397 transitions. Word has length 38 [2021-11-25 19:00:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:21,209 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 397 transitions. [2021-11-25 19:00:21,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:21,210 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 397 transitions. [2021-11-25 19:00:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:00:21,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:21,210 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, 1, 1, 1] [2021-11-25 19:00:21,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 19:00:21,210 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:00:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1457382675, now seen corresponding path program 1 times [2021-11-25 19:00:21,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:21,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606148677] [2021-11-25 19:00:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:21,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:21,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:21,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606148677] [2021-11-25 19:00:21,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606148677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:21,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:21,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 19:00:21,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211753865] [2021-11-25 19:00:21,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:21,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:00:21,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:00:21,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:00:21,426 INFO L87 Difference]: Start difference. First operand 308 states and 397 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:22,219 INFO L93 Difference]: Finished difference Result 402 states and 455 transitions. [2021-11-25 19:00:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 19:00:22,220 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 [2021-11-25 19:00:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:22,222 INFO L225 Difference]: With dead ends: 402 [2021-11-25 19:00:22,222 INFO L226 Difference]: Without dead ends: 402 [2021-11-25 19:00:22,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2021-11-25 19:00:22,223 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 1323 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:22,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 554 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:00:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-25 19:00:22,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 308. [2021-11-25 19:00:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 239 states have (on average 1.6569037656903767) internal successors, (396), 307 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 396 transitions. [2021-11-25 19:00:22,230 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 396 transitions. Word has length 38 [2021-11-25 19:00:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:22,231 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 396 transitions. [2021-11-25 19:00:22,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 396 transitions. [2021-11-25 19:00:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 19:00:22,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:22,232 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, 1, 1, 1, 1] [2021-11-25 19:00:22,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 19:00:22,232 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:00:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:22,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2017471956, now seen corresponding path program 1 times [2021-11-25 19:00:22,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:22,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86195327] [2021-11-25 19:00:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:22,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:22,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:22,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86195327] [2021-11-25 19:00:22,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86195327] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:22,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568968733] [2021-11-25 19:00:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:22,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:22,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:22,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:22,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:00:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:22,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 19:00:22,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:22,843 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 13 treesize of output 9 [2021-11-25 19:00:22,850 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 [2021-11-25 19:00:22,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:22,934 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 [2021-11-25 19:00:22,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:22,942 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 14 treesize of output 16 [2021-11-25 19:00:22,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:22,995 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 14 treesize of output 16 [2021-11-25 19:00:23,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:23,009 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:00:23,010 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 28 treesize of output 30 [2021-11-25 19:00:23,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:23,095 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 14 treesize of output 16 [2021-11-25 19:00:23,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:23,109 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:00:23,110 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 28 treesize of output 30 [2021-11-25 19:00:23,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:23,184 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 0 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 19:00:23,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:23,189 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 14 treesize of output 16 [2021-11-25 19:00:23,192 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 5 treesize of output 3 [2021-11-25 19:00:23,289 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 9 treesize of output 3 [2021-11-25 19:00:23,291 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 9 treesize of output 3 [2021-11-25 19:00:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:23,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:25,766 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:00:25,767 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-11-25 19:00:25,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:00:25,786 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2021-11-25 19:00:25,790 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 60 treesize of output 48 [2021-11-25 19:00:25,793 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 62 treesize of output 50 [2021-11-25 19:00:25,797 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 41 treesize of output 37 [2021-11-25 19:00:25,801 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 37 treesize of output 33 [2021-11-25 19:00:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:25,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568968733] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:00:25,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [20961880] [2021-11-25 19:00:25,890 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-11-25 19:00:25,890 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:00:25,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:00:25,891 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:00:25,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:00:25,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:25,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:25,938 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 [2021-11-25 19:00:25,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:25,959 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 34 treesize of output 21 [2021-11-25 19:00:25,968 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 13 treesize of output 9 [2021-11-25 19:00:25,975 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 13 treesize of output 9 [2021-11-25 19:00:26,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-11-25 19:00:26,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,010 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 26 treesize of output 28 [2021-11-25 19:00:26,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,025 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 [2021-11-25 19:00:26,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,035 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 25 treesize of output 13 [2021-11-25 19:00:26,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,070 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 21 treesize of output 20 [2021-11-25 19:00:26,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,082 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 21 treesize of output 20 [2021-11-25 19:00:26,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,095 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 46 treesize of output 36 [2021-11-25 19:00:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,126 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 30 treesize of output 32 [2021-11-25 19:00:26,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,138 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 50 treesize of output 36 [2021-11-25 19:00:26,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,151 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 30 treesize of output 32 [2021-11-25 19:00:26,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,200 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 38 treesize of output 47 [2021-11-25 19:00:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,263 INFO L354 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2021-11-25 19:00:26,264 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 165 treesize of output 133 [2021-11-25 19:00:26,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,279 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 66 treesize of output 44 [2021-11-25 19:00:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2021-11-25 19:00:26,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,369 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-25 19:00:26,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 151 [2021-11-25 19:00:26,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,392 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 58 treesize of output 51 [2021-11-25 19:00:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 89 [2021-11-25 19:00:26,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 55 [2021-11-25 19:00:26,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,511 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:00:26,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 138 [2021-11-25 19:00:26,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-25 19:00:26,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2021-11-25 19:00:26,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,681 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-25 19:00:26,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 483 treesize of output 447 [2021-11-25 19:00:26,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,756 INFO L354 Elim1Store]: treesize reduction 154, result has 26.0 percent of original size [2021-11-25 19:00:26,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 607 treesize of output 622 [2021-11-25 19:00:26,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:26,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:26,790 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-25 19:00:26,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 611 treesize of output 570 [2021-11-25 19:00:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:27,439 INFO L354 Elim1Store]: treesize reduction 296, result has 15.9 percent of original size [2021-11-25 19:00:27,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 2282 treesize of output 2195 [2021-11-25 19:00:28,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:28,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:28,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:28,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:28,466 INFO L354 Elim1Store]: treesize reduction 216, result has 16.0 percent of original size [2021-11-25 19:00:28,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 2906 treesize of output 1725 [2021-11-25 19:00:28,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:28,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:28,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:28,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:28,625 INFO L354 Elim1Store]: treesize reduction 298, result has 17.9 percent of original size [2021-11-25 19:00:28,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 2896 treesize of output 2593 [2021-11-25 19:00:28,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:28,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:28,713 INFO L354 Elim1Store]: treesize reduction 147, result has 9.3 percent of original size [2021-11-25 19:00:28,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2856 treesize of output 2547 [2021-11-25 19:00:30,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:30,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:30,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:30,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:30,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:30,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:30,226 INFO L354 Elim1Store]: treesize reduction 254, result has 9.9 percent of original size [2021-11-25 19:00:30,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 8429 treesize of output 4944 [2021-11-25 19:00:30,479 INFO L354 Elim1Store]: treesize reduction 184, result has 22.7 percent of original size [2021-11-25 19:00:30,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 8 case distinctions, treesize of input 8416 treesize of output 7464 [2021-11-25 19:00:30,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:30,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:30,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:30,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:30,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:30,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:30,700 INFO L354 Elim1Store]: treesize reduction 330, result has 8.8 percent of original size [2021-11-25 19:00:30,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 8111 treesize of output 7062 [2021-11-25 19:00:30,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,022 INFO L354 Elim1Store]: treesize reduction 410, result has 13.7 percent of original size [2021-11-25 19:00:31,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 8094 treesize of output 7688 [2021-11-25 19:00:38,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:38,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:38,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:38,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:38,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:38,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:38,182 INFO L354 Elim1Store]: treesize reduction 242, result has 10.4 percent of original size [2021-11-25 19:00:38,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 17681 treesize of output 10433 [2021-11-25 19:00:38,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:38,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:38,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:38,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:38,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:38,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:38,387 INFO L354 Elim1Store]: treesize reduction 318, result has 9.1 percent of original size [2021-11-25 19:00:38,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 17699 treesize of output 15561 [2021-11-25 19:00:38,610 INFO L354 Elim1Store]: treesize reduction 262, result has 18.9 percent of original size [2021-11-25 19:00:38,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 17692 treesize of output 16168 [2021-11-25 19:00:40,784 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 [2021-11-25 19:00:40,788 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 [2021-11-25 19:00:40,792 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 [2021-11-25 19:00:40,818 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:40,818 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 [2021-11-25 19:00:40,825 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 [2021-11-25 19:00:40,840 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 23 treesize of output 22 [2021-11-25 19:00:40,846 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 19 treesize of output 1 [2021-11-25 19:00:40,851 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 13 treesize of output 9 [2021-11-25 19:00:40,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:40,865 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 34 treesize of output 25 [2021-11-25 19:00:40,871 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 [2021-11-25 19:00:40,894 INFO L354 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2021-11-25 19:00:40,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-25 19:00:40,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:40,905 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 25 treesize of output 13 [2021-11-25 19:00:40,932 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:00:40,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 33 [2021-11-25 19:00:40,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-25 19:00:40,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-25 19:00:40,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:00:40,978 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 [2021-11-25 19:00:40,982 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 [2021-11-25 19:00:40,986 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 [2021-11-25 19:00:41,016 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 [2021-11-25 19:00:41,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 19:00:41,036 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 15 treesize of output 1 [2021-11-25 19:00:41,042 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 [2021-11-25 19:00:41,047 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 [2021-11-25 19:00:41,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:41,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:41,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:41,080 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:00:41,080 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 25 treesize of output 27 [2021-11-25 19:00:41,086 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 19 treesize of output 1 [2021-11-25 19:00:41,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:41,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:41,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:41,103 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:00:41,103 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 25 treesize of output 27 [2021-11-25 19:00:41,163 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 19 treesize of output 1 [2021-11-25 19:00:41,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:41,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:41,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:41,200 INFO L354 Elim1Store]: treesize reduction 74, result has 22.9 percent of original size [2021-11-25 19:00:41,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 69 treesize of output 70 [2021-11-25 19:00:41,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:41,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:41,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:41,232 INFO L354 Elim1Store]: treesize reduction 74, result has 22.9 percent of original size [2021-11-25 19:00:41,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 69 treesize of output 70 [2021-11-25 19:00:41,286 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 15 treesize of output 1 [2021-11-25 19:00:41,313 INFO L354 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2021-11-25 19:00:41,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 37 [2021-11-25 19:00:41,339 INFO L354 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2021-11-25 19:00:41,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 37 [2021-11-25 19:00:42,301 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 [2021-11-25 19:00:42,471 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-11-25 19:00:42,471 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 2 case distinctions, treesize of input 17 treesize of output 28 [2021-11-25 19:00:42,561 INFO L354 Elim1Store]: treesize reduction 107, result has 22.5 percent of original size [2021-11-25 19:00:42,561 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 10 case distinctions, treesize of input 34 treesize of output 52 [2021-11-25 19:00:42,636 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:42,636 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 [2021-11-25 19:00:42,651 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 [2021-11-25 19:00:42,752 INFO L354 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2021-11-25 19:00:42,752 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2021-11-25 19:00:43,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:43,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 19:00:43,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:43,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 19:00:43,204 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:43,204 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 [2021-11-25 19:00:43,243 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-25 19:00:43,243 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 1 [2021-11-25 19:00:43,325 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 [2021-11-25 19:00:43,328 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 [2021-11-25 19:00:43,333 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 [2021-11-25 19:00:43,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:43,345 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 [2021-11-25 19:00:43,353 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 [2021-11-25 19:00:43,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:43,359 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 [2021-11-25 19:00:43,372 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:00:43,372 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 19:00:43,393 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:43,393 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 [2021-11-25 19:00:43,395 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:00:47,038 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22480#(and (<= 0 |ULTIMATE.start_main_~#dst~1#1.offset|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~#dst~1#1.offset| 0) (<= |ULTIMATE.start_main_~#sub1~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#sub2~0#1.base|) 1) (<= 0 |ULTIMATE.start_main_~dst~0#1.offset|) (<= (+ |ULTIMATE.start_main_~list~1#1.offset| 4) (select |#length| |ULTIMATE.start_main_~list~1#1.base|)) (not (= |ULTIMATE.start_main_~#sub2~0#1.base| |ULTIMATE.start_main_~list~1#1.base|)) (not (= (select |#valid| |ULTIMATE.start_main_~next~0#1.base|) 1)) (<= 0 |ULTIMATE.start_main_~node~1#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~list~1#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~list~1#1.base|) 1) (<= 0 |ULTIMATE.start_main_~node~1#1.base|) (<= 0 |ULTIMATE.start_main_~#sub1~0#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#sub2~0#1.base|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#sub1~0#1.base|) |ULTIMATE.start_main_~#sub1~0#1.offset|) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~list~1#1.base|) |ULTIMATE.start_main_~list~1#1.offset|)) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~dst~0#1.base|) (= 4 (select |#length| |ULTIMATE.start_main_~#sub2~0#1.base|)) (= |ULTIMATE.start_main_~#sub2~0#1.offset| 0) (<= 0 |#NULL.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#sub1~0#1.base|) |ULTIMATE.start_main_~#sub1~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~list~1#1.base|) |ULTIMATE.start_main_~list~1#1.offset|)) (<= |ULTIMATE.start_main_~dst~0#1.base| 0) (<= |ULTIMATE.start_main_~node~1#1.base| 0) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~list~1#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sub1~0#1.base|) (<= 0 |ULTIMATE.start_main_~#dst~1#1.base|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)) (<= |ULTIMATE.start_main_~dst~0#1.offset| 0) (<= |ULTIMATE.start_main_~node~1#1.offset| 0))' at error location [2021-11-25 19:00:47,038 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:00:47,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:00:47,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 24 [2021-11-25 19:00:47,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858402028] [2021-11-25 19:00:47,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:00:47,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:00:47,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:47,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:00:47,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2946, Unknown=3, NotChecked=0, Total=3192 [2021-11-25 19:00:47,042 INFO L87 Difference]: Start difference. First operand 308 states and 396 transitions. Second operand has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 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) [2021-11-25 19:00:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:47,633 INFO L93 Difference]: Finished difference Result 321 states and 409 transitions. [2021-11-25 19:00:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:00:47,634 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 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 39 [2021-11-25 19:00:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:47,635 INFO L225 Difference]: With dead ends: 321 [2021-11-25 19:00:47,636 INFO L226 Difference]: Without dead ends: 321 [2021-11-25 19:00:47,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=288, Invalid=3491, Unknown=3, NotChecked=0, Total=3782 [2021-11-25 19:00:47,638 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 41 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:47,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1936 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 865 Invalid, 0 Unknown, 326 Unchecked, 0.5s Time] [2021-11-25 19:00:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-25 19:00:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2021-11-25 19:00:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 248 states have (on average 1.6330645161290323) internal successors, (405), 316 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 405 transitions. [2021-11-25 19:00:47,645 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 405 transitions. Word has length 39 [2021-11-25 19:00:47,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:47,645 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 405 transitions. [2021-11-25 19:00:47,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 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) [2021-11-25 19:00:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 405 transitions. [2021-11-25 19:00:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 19:00:47,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:47,646 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-25 19:00:47,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 19:00:47,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-25 19:00:47,855 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:00:47,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2024368557, now seen corresponding path program 1 times [2021-11-25 19:00:47,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:47,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674720366] [2021-11-25 19:00:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:47,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:48,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:48,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674720366] [2021-11-25 19:00:48,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674720366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:48,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642349049] [2021-11-25 19:00:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:48,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:48,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:48,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:48,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:00:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:49,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-25 19:00:49,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:49,189 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 [2021-11-25 19:00:49,254 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:49,254 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 17 treesize of output 21 [2021-11-25 19:00:49,309 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 [2021-11-25 19:00:49,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:49,382 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 38 treesize of output 29 [2021-11-25 19:00:49,481 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-25 19:00:49,481 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 26 treesize of output 41 [2021-11-25 19:00:49,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-25 19:00:49,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-25 19:00:49,658 INFO L354 Elim1Store]: treesize reduction 66, result has 35.3 percent of original size [2021-11-25 19:00:49,659 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 31 treesize of output 53 [2021-11-25 19:00:49,772 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 52 treesize of output 35 [2021-11-25 19:00:49,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:49,884 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:00:49,884 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 90 treesize of output 60 [2021-11-25 19:00:49,911 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 [2021-11-25 19:00:50,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:50,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:50,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:50,125 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-25 19:00:50,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 69 [2021-11-25 19:00:50,233 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 [2021-11-25 19:00:50,251 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-25 19:00:50,251 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 3 case distinctions, treesize of input 137 treesize of output 81 [2021-11-25 19:00:50,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:50,615 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:00:50,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:50,660 INFO L354 Elim1Store]: treesize reduction 128, result has 14.7 percent of original size [2021-11-25 19:00:50,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 239 treesize of output 109 [2021-11-25 19:00:51,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:51,221 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 32 treesize of output 34 [2021-11-25 19:00:51,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:51,254 INFO L354 Elim1Store]: treesize reduction 170, result has 11.5 percent of original size [2021-11-25 19:00:51,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 238 treesize of output 112 [2021-11-25 19:00:51,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:51,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:51,760 INFO L354 Elim1Store]: treesize reduction 189, result has 11.7 percent of original size [2021-11-25 19:00:51,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 268 treesize of output 124 [2021-11-25 19:00:51,768 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:00:51,769 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 1 case distinctions, treesize of input 36 treesize of output 33 [2021-11-25 19:00:51,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-25 19:00:52,245 INFO L354 Elim1Store]: treesize reduction 128, result has 12.3 percent of original size [2021-11-25 19:00:52,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 158 treesize of output 99 [2021-11-25 19:00:52,587 INFO L354 Elim1Store]: treesize reduction 41, result has 8.9 percent of original size [2021-11-25 19:00:52,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 153 treesize of output 66 [2021-11-25 19:00:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:52,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:52,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642349049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:52,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:00:52,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [25] total 46 [2021-11-25 19:00:52,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030031146] [2021-11-25 19:00:52,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:52,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 19:00:52,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 19:00:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1977, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 19:00:52,705 INFO L87 Difference]: Start difference. First operand 317 states and 405 transitions. Second operand has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 23 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) [2021-11-25 19:00:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:54,861 INFO L93 Difference]: Finished difference Result 324 states and 414 transitions. [2021-11-25 19:00:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 19:00:54,862 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 23 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 40 [2021-11-25 19:00:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:54,865 INFO L225 Difference]: With dead ends: 324 [2021-11-25 19:00:54,865 INFO L226 Difference]: Without dead ends: 324 [2021-11-25 19:00:54,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=390, Invalid=3270, Unknown=0, NotChecked=0, Total=3660 [2021-11-25 19:00:54,867 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 77 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 677 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:54,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1277 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 865 Invalid, 0 Unknown, 677 Unchecked, 0.7s Time] [2021-11-25 19:00:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-25 19:00:54,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2021-11-25 19:00:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 252 states have (on average 1.630952380952381) internal successors, (411), 320 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 411 transitions. [2021-11-25 19:00:54,876 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 411 transitions. Word has length 40 [2021-11-25 19:00:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:54,876 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 411 transitions. [2021-11-25 19:00:54,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 23 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) [2021-11-25 19:00:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 411 transitions. [2021-11-25 19:00:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 19:00:54,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:54,877 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-25 19:00:54,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:55,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-25 19:00:55,091 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:00:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2024368556, now seen corresponding path program 1 times [2021-11-25 19:00:55,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:55,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571516708] [2021-11-25 19:00:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:55,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:56,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:56,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571516708] [2021-11-25 19:00:56,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571516708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:56,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660615812] [2021-11-25 19:00:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:56,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:56,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:56,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:56,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:00:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:56,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-25 19:00:56,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:56,653 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 [2021-11-25 19:00:56,745 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:00:56,746 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 17 treesize of output 21 [2021-11-25 19:00:56,754 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 14 treesize of output 16 [2021-11-25 19:00:56,818 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 [2021-11-25 19:00:56,822 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 [2021-11-25 19:00:56,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:56,886 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 53 treesize of output 40 [2021-11-25 19:00:56,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:56,889 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 [2021-11-25 19:00:56,994 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-25 19:00:56,994 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 26 treesize of output 41 [2021-11-25 19:00:57,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 24 [2021-11-25 19:00:57,083 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 54 treesize of output 48 [2021-11-25 19:00:57,086 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 29 treesize of output 29 [2021-11-25 19:00:57,127 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 54 treesize of output 48 [2021-11-25 19:00:57,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 24 [2021-11-25 19:00:57,139 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 29 treesize of output 29 [2021-11-25 19:00:57,171 INFO L354 Elim1Store]: treesize reduction 66, result has 35.3 percent of original size [2021-11-25 19:00:57,172 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 31 treesize of output 53 [2021-11-25 19:00:57,325 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 54 [2021-11-25 19:00:57,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2021-11-25 19:00:57,375 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 69 treesize of output 48 [2021-11-25 19:00:57,379 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 54 treesize of output 43 [2021-11-25 19:00:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 30 treesize of output 32 [2021-11-25 19:00:57,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,628 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-11-25 19:00:57,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2021-11-25 19:00:57,710 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 19:00:57,710 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 64 [2021-11-25 19:00:57,715 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 69 treesize of output 59 [2021-11-25 19:00:57,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,874 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-11-25 19:00:57,874 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 168 treesize of output 87 [2021-11-25 19:00:57,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,879 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 0 case distinctions, treesize of input 78 treesize of output 71 [2021-11-25 19:00:58,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,068 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-11-25 19:00:58,068 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 168 treesize of output 87 [2021-11-25 19:00:58,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,074 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 0 case distinctions, treesize of input 78 treesize of output 71 [2021-11-25 19:00:58,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:58,373 INFO L354 Elim1Store]: treesize reduction 139, result has 14.7 percent of original size [2021-11-25 19:00:58,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 205 treesize of output 108 [2021-11-25 19:00:58,386 INFO L354 Elim1Store]: treesize reduction 57, result has 10.9 percent of original size [2021-11-25 19:00:58,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 198 treesize of output 151 [2021-11-25 19:00:58,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:58,785 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-25 19:00:58,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 153 treesize of output 111 [2021-11-25 19:00:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,793 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:00:58,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 90 [2021-11-25 19:00:59,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,108 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:00:59,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 54 [2021-11-25 19:00:59,115 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-25 19:00:59,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 110 treesize of output 41 [2021-11-25 19:00:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:59,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:14,377 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_2165 Int) (v_ArrVal_2167 Int)) (let ((.cse6 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse6 v_ArrVal_2165)) (.cse3 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_2167))) (let ((.cse4 (select .cse3 |ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse5 (+ (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse3) .cse4) .cse5)) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse0) .cse4) .cse5))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| (store .cse0 |ULTIMATE.start_main_~#iter~0#1.offset| .cse1)) .cse2) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| (store .cse3 |ULTIMATE.start_main_~#iter~0#1.offset| .cse2)) .cse2) .cse1)))))))) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_2165 Int) (v_ArrVal_2167 Int)) (<= 0 (+ 4 (let ((.cse12 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse7 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse12 v_ArrVal_2165)) (.cse9 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse12 v_ArrVal_2167))) (let ((.cse10 (select .cse9 |ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse11 (+ (select .cse7 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse7) .cse10) .cse11))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| (store .cse7 |ULTIMATE.start_main_~#iter~0#1.offset| .cse8)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse9) .cse10) .cse11)) .cse8))))))))) is different from false [2021-11-25 19:01:33,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:33,753 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 799 treesize of output 713 [2021-11-25 19:01:33,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:33,769 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 713 treesize of output 606 [2021-11-25 19:01:34,287 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_8 (Array Int Int)) (v_arrayElimArr_7 (Array Int Int)) (|v_ULTIMATE.start_main_~#iter~0#1.base_75| Int)) (let ((.cse0 (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_75|) 0)) (not (= |c_ULTIMATE.start_main_~data~0#1.base| (select v_arrayElimArr_7 .cse0))) (<= |v_ULTIMATE.start_main_~#iter~0#1.base_75| |c_#StackHeapBarrier|) (not (= (select v_arrayElimArr_8 .cse0) |c_ULTIMATE.start_main_~data~0#1.offset|)) (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_2165 Int) (v_ArrVal_2167 Int)) (<= 0 (+ (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_7)) (.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_8)) (.cse8 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse2 (store (store (select .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_75|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.offset|) .cse8 v_ArrVal_2165)) (.cse5 (store (store (select .cse4 |v_ULTIMATE.start_main_~#iter~0#1.base_75|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.base|) .cse8 v_ArrVal_2167))) (let ((.cse6 (select .cse5 |ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse7 (+ (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (let ((.cse3 (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_75| .cse2) .cse6) .cse7))) (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_75| (store .cse2 |ULTIMATE.start_main_~#iter~0#1.offset| .cse3)) (select (select (store .cse4 |v_ULTIMATE.start_main_~#iter~0#1.base_75| .cse5) .cse6) .cse7)) .cse3))))) 4))) (forall ((v_prenex_7 Int) (v_ArrVal_2155 Int) (v_prenex_8 Int) (v_prenex_9 Int)) (let ((.cse13 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_7)) (.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_8)) (.cse17 (+ v_prenex_7 4))) (let ((.cse10 (store (store (select .cse9 |v_ULTIMATE.start_main_~#iter~0#1.base_75|) v_prenex_7 |c_ULTIMATE.start_main_~item~0#1.offset|) .cse17 v_prenex_8)) (.cse14 (store (store (select .cse13 |v_ULTIMATE.start_main_~#iter~0#1.base_75|) v_prenex_7 |c_ULTIMATE.start_main_~item~0#1.base|) .cse17 v_prenex_9))) (let ((.cse15 (select .cse14 v_prenex_7)) (.cse16 (+ (select .cse10 v_prenex_7) 4))) (let ((.cse12 (select (select (store .cse13 |v_ULTIMATE.start_main_~#iter~0#1.base_75| .cse14) .cse15) .cse16)) (.cse11 (select (select (store .cse9 |v_ULTIMATE.start_main_~#iter~0#1.base_75| .cse10) .cse15) .cse16))) (<= (+ (select (select (store .cse9 |v_ULTIMATE.start_main_~#iter~0#1.base_75| (store .cse10 v_prenex_7 .cse11)) .cse12) .cse11) 8) (select (store |c_#length| |v_ULTIMATE.start_main_~#iter~0#1.base_75| v_ArrVal_2155) (select (select (store .cse13 |v_ULTIMATE.start_main_~#iter~0#1.base_75| (store .cse14 v_prenex_7 .cse12)) .cse12) .cse11)))))))))))) is different from false [2021-11-25 19:01:47,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:48,165 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:48,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 1267 treesize of output 1057 [2021-11-25 19:01:48,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:48,250 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:48,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 1057 treesize of output 794 [2021-11-25 19:01:48,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:48,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:48,920 INFO L354 Elim1Store]: treesize reduction 184, result has 57.5 percent of original size [2021-11-25 19:01:48,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 55438 treesize of output 51904 [2021-11-25 19:01:49,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:49,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:49,686 INFO L354 Elim1Store]: treesize reduction 72, result has 68.6 percent of original size [2021-11-25 19:01:49,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 6521680 treesize of output 5651112 [2021-11-25 19:01:55,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:55,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:56,196 INFO L354 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2021-11-25 19:01:56,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 5719526 treesize of output 5712117 [2021-11-25 19:02:02,830 INFO L354 Elim1Store]: treesize reduction 696, result has 58.6 percent of original size [2021-11-25 19:02:02,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 55 case distinctions, treesize of input 5712123 treesize of output 5129145 [2021-11-25 19:02:08,058 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 4373 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:02:09,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:02:09,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:02:09,989 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-25 19:02:09,995 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 7688846 treesize of output 7387070 [2021-11-25 19:02:18,918 WARN L227 SmtUtils]: Spent 8.92s on a formula simplification that was a NOOP. DAG size: 4942 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:02:20,587 INFO L354 Elim1Store]: treesize reduction 288, result has 53.0 percent of original size [2021-11-25 19:02:20,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 7387076 treesize of output 6887930 [2021-11-25 19:02:29,723 WARN L227 SmtUtils]: Spent 9.12s on a formula simplification that was a NOOP. DAG size: 4980 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:02:32,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-25 19:02:32,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1238005443] [2021-11-25 19:02:32,338 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 19:02:32,338 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:02:32,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:02:32,339 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:02:32,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:02:32,393 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6e9cbce4 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:401) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) 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) [2021-11-25 19:02:32,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:02:32,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-25 19:02:32,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18536470] [2021-11-25 19:02:32,397 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:02:32,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 19:02:32,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 19:02:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2686, Unknown=20, NotChecked=210, Total=3080 [2021-11-25 19:02:32,400 INFO L87 Difference]: Start difference. First operand 321 states and 411 transitions. Second operand has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 23 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) [2021-11-25 19:02:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:02:32,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=164, Invalid=2686, Unknown=20, NotChecked=210, Total=3080 [2021-11-25 19:02:32,403 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 [2021-11-25 19:02:32,403 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] [2021-11-25 19:02:32,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:32,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-25 19:02:32,631 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@6e9cbce4 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) [2021-11-25 19:02:32,633 INFO L158 Benchmark]: Toolchain (without parser) took 217660.13ms. Allocated memory was 113.2MB in the beginning and 847.2MB in the end (delta: 734.0MB). Free memory was 71.2MB in the beginning and 722.0MB in the end (delta: -650.8MB). Peak memory consumption was 83.2MB. Max. memory is 16.1GB. [2021-11-25 19:02:32,634 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 88.7MB in the beginning and 88.6MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:02:32,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.46ms. Allocated memory is still 113.2MB. Free memory was 71.0MB in the beginning and 78.2MB in the end (delta: -7.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-25 19:02:32,634 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.68ms. Allocated memory is still 113.2MB. Free memory was 78.2MB in the beginning and 75.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:02:32,634 INFO L158 Benchmark]: Boogie Preprocessor took 75.44ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 72.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:02:32,634 INFO L158 Benchmark]: RCFGBuilder took 1263.91ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 72.2MB in the beginning and 104.1MB in the end (delta: -31.9MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2021-11-25 19:02:32,634 INFO L158 Benchmark]: TraceAbstraction took 215737.40ms. Allocated memory was 151.0MB in the beginning and 847.2MB in the end (delta: 696.3MB). Free memory was 104.1MB in the beginning and 722.0MB in the end (delta: -617.8MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. [2021-11-25 19:02:32,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 88.7MB in the beginning and 88.6MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.46ms. Allocated memory is still 113.2MB. Free memory was 71.0MB in the beginning and 78.2MB in the end (delta: -7.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.68ms. Allocated memory is still 113.2MB. Free memory was 78.2MB in the beginning and 75.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.44ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 72.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1263.91ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 72.2MB in the beginning and 104.1MB in the end (delta: -31.9MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. * TraceAbstraction took 215737.40ms. Allocated memory was 151.0MB in the beginning and 847.2MB in the end (delta: 696.3MB). Free memory was 104.1MB in the beginning and 722.0MB in the end (delta: -617.8MB). Peak memory consumption was 79.5MB. 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@6e9cbce4 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6e9cbce4: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 19:02:32,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0521.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7 --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 aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:02:35,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:02:35,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:02:35,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:02:35,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:02:35,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:02:35,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:02:35,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:02:35,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:02:35,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:02:35,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:02:35,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:02:35,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:02:35,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:02:35,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:02:35,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:02:35,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:02:35,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:02:35,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:02:35,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:02:35,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:02:35,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:02:35,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:02:35,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:02:35,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:02:35,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:02:35,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:02:35,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:02:35,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:02:35,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:02:35,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:02:35,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:02:35,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:02:35,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:02:35,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:02:35,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:02:35,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:02:35,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:02:35,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:02:35,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:02:35,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:02:35,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 19:02:35,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:02:35,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:02:35,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:02:35,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:02:35,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:02:35,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:02:35,571 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:02:35,571 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:02:35,571 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:02:35,572 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:02:35,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:02:35,572 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:02:35,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:02:35,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:02:35,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:02:35,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:02:35,575 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:02:35,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:02:35,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:02:35,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:02:35,576 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:02:35,576 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:02:35,576 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:02:35,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:02:35,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:02:35,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:02:35,578 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:02:35,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:02:35,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:02:35,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:02:35,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:02:35,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:02:35,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:02:35,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:02:35,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:02:35,580 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:02:35,580 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:02:35,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:02:35,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:02:35,581 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_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 [2021-11-25 19:02:36,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:02:36,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:02:36,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:02:36,110 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:02:36,111 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:02:36,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/memsafety/test-0521.i [2021-11-25 19:02:36,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data/845da8501/801c14646c5d4ddd99446dee5e9e4984/FLAG9a71147b5 [2021-11-25 19:02:37,005 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:02:37,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/sv-benchmarks/c/memsafety/test-0521.i [2021-11-25 19:02:37,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data/845da8501/801c14646c5d4ddd99446dee5e9e4984/FLAG9a71147b5 [2021-11-25 19:02:37,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/data/845da8501/801c14646c5d4ddd99446dee5e9e4984 [2021-11-25 19:02:37,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:02:37,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:02:37,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:02:37,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:02:37,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:02:37,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:37,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad53089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37, skipping insertion in model container [2021-11-25 19:02:37,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:37,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:02:37,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:02:37,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:02:37,783 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:02:37,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:02:37,932 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:02:37,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37 WrapperNode [2021-11-25 19:02:37,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:02:37,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:02:37,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:02:37,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:02:37,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:37,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,009 INFO L137 Inliner]: procedures = 128, calls = 95, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 298 [2021-11-25 19:02:38,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:02:38,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:02:38,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:02:38,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:02:38,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:02:38,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:02:38,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:02:38,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:02:38,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (1/1) ... [2021-11-25 19:02:38,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:02:38,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:02:38,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:02:38,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:02:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:02:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:02:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:02:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:02:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:02:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:02:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:02:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:02:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:02:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:02:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:02:38,417 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:02:38,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:02:39,976 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:02:39,989 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:02:39,989 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-25 19:02:39,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:02:39 BoogieIcfgContainer [2021-11-25 19:02:39,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:02:39,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:02:39,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:02:39,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:02:39,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:02:37" (1/3) ... [2021-11-25 19:02:39,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264add48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:02:39, skipping insertion in model container [2021-11-25 19:02:40,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:37" (2/3) ... [2021-11-25 19:02:40,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264add48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:02:40, skipping insertion in model container [2021-11-25 19:02:40,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:02:39" (3/3) ... [2021-11-25 19:02:40,002 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0521.i [2021-11-25 19:02:40,008 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:02:40,009 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 152 error locations. [2021-11-25 19:02:40,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:02:40,077 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 [2021-11-25 19:02:40,078 INFO L340 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2021-11-25 19:02:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 156 states have (on average 2.2115384615384617) internal successors, (345), 308 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:02:40,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:40,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:02:40,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 28727526, now seen corresponding path program 1 times [2021-11-25 19:02:40,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:40,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687493433] [2021-11-25 19:02:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:40,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:40,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:40,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:02:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:40,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:02:40,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:40,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:40,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:40,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687493433] [2021-11-25 19:02:40,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687493433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:40,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:40,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:40,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51553478] [2021-11-25 19:02:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:40,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:02:40,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:02:40,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:02:40,411 INFO L87 Difference]: Start difference. First operand has 309 states, 156 states have (on average 2.2115384615384617) internal successors, (345), 308 states have internal predecessors, (345), 0 states have call successors, (0), 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 2.5) 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) [2021-11-25 19:02:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:40,482 INFO L93 Difference]: Finished difference Result 309 states and 335 transitions. [2021-11-25 19:02:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:02:40,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2021-11-25 19:02:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:40,507 INFO L225 Difference]: With dead ends: 309 [2021-11-25 19:02:40,507 INFO L226 Difference]: Without dead ends: 307 [2021-11-25 19:02:40,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:02:40,514 INFO L933 BasicCegarLoop]: 335 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, 335 SdHoareTripleChecker+Invalid, 0 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 [2021-11-25 19:02:40,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:02:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-25 19:02:40,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-25 19:02:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 155 states have (on average 2.1483870967741936) internal successors, (333), 306 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 333 transitions. [2021-11-25 19:02:40,627 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 333 transitions. Word has length 5 [2021-11-25 19:02:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:40,628 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 333 transitions. [2021-11-25 19:02:40,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2021-11-25 19:02:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 333 transitions. [2021-11-25 19:02:40,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:02:40,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:40,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:02:40,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:40,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:40,845 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:40,849 INFO L85 PathProgramCache]: Analyzing trace with hash 28698696, now seen corresponding path program 1 times [2021-11-25 19:02:40,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:40,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470355472] [2021-11-25 19:02:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:40,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:40,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:40,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:40,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:02:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:40,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:02:40,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:41,059 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 [2021-11-25 19:02:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:41,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:41,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:41,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470355472] [2021-11-25 19:02:41,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470355472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:41,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:41,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:41,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074607472] [2021-11-25 19:02:41,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:41,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:41,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:41,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:41,104 INFO L87 Difference]: Start difference. First operand 307 states and 333 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) [2021-11-25 19:02:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:41,875 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2021-11-25 19:02:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:41,876 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 [2021-11-25 19:02:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:41,879 INFO L225 Difference]: With dead ends: 291 [2021-11-25 19:02:41,879 INFO L226 Difference]: Without dead ends: 291 [2021-11-25 19:02:41,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:41,881 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 77 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:41,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 396 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:02:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-25 19:02:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-11-25 19:02:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 155 states have (on average 2.0451612903225804) internal successors, (317), 290 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 317 transitions. [2021-11-25 19:02:41,923 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 317 transitions. Word has length 5 [2021-11-25 19:02:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:41,924 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 317 transitions. [2021-11-25 19:02:41,924 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) [2021-11-25 19:02:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 317 transitions. [2021-11-25 19:02:41,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:02:41,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:41,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:02:41,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-25 19:02:42,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:42,128 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:42,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash 28698697, now seen corresponding path program 1 times [2021-11-25 19:02:42,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:42,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106966695] [2021-11-25 19:02:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:42,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:42,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:42,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:42,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:02:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:42,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:02:42,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:42,255 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 [2021-11-25 19:02:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:42,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:42,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:42,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106966695] [2021-11-25 19:02:42,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106966695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:42,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:42,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:42,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237195386] [2021-11-25 19:02:42,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:42,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:42,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:42,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:42,289 INFO L87 Difference]: Start difference. First operand 291 states and 317 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) [2021-11-25 19:02:43,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:43,149 INFO L93 Difference]: Finished difference Result 275 states and 301 transitions. [2021-11-25 19:02:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:43,154 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 [2021-11-25 19:02:43,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:43,157 INFO L225 Difference]: With dead ends: 275 [2021-11-25 19:02:43,157 INFO L226 Difference]: Without dead ends: 275 [2021-11-25 19:02:43,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:43,159 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 61 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:43,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 405 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:02:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-25 19:02:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-11-25 19:02:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 155 states have (on average 1.9419354838709677) internal successors, (301), 274 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2021-11-25 19:02:43,174 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 5 [2021-11-25 19:02:43,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:43,175 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2021-11-25 19:02:43,175 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) [2021-11-25 19:02:43,175 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2021-11-25 19:02:43,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:02:43,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:43,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:02:43,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:43,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:43,389 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:43,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:43,390 INFO L85 PathProgramCache]: Analyzing trace with hash 28699819, now seen corresponding path program 1 times [2021-11-25 19:02:43,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:43,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723834710] [2021-11-25 19:02:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:43,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:43,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:43,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:43,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:02:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:43,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:02:43,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:43,525 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 [2021-11-25 19:02:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:43,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:43,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:43,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723834710] [2021-11-25 19:02:43,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723834710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:43,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:43,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:43,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22449080] [2021-11-25 19:02:43,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:43,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:43,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:43,554 INFO L87 Difference]: Start difference. First operand 275 states and 301 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) [2021-11-25 19:02:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:44,307 INFO L93 Difference]: Finished difference Result 329 states and 364 transitions. [2021-11-25 19:02:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:44,308 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 [2021-11-25 19:02:44,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:44,311 INFO L225 Difference]: With dead ends: 329 [2021-11-25 19:02:44,311 INFO L226 Difference]: Without dead ends: 329 [2021-11-25 19:02:44,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:44,313 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 74 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:44,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 471 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:02:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-25 19:02:44,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 273. [2021-11-25 19:02:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 155 states have (on average 1.929032258064516) internal successors, (299), 272 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 299 transitions. [2021-11-25 19:02:44,325 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 299 transitions. Word has length 5 [2021-11-25 19:02:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:44,326 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 299 transitions. [2021-11-25 19:02:44,326 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) [2021-11-25 19:02:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 299 transitions. [2021-11-25 19:02:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:02:44,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:44,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:02:44,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:44,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:44,544 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2021-11-25 19:02:44,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:44,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742870158] [2021-11-25 19:02:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:44,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:44,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:44,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:44,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:02:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:44,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:02:44,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:44,657 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 [2021-11-25 19:02:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:44,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:44,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:44,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742870158] [2021-11-25 19:02:44,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742870158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:44,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:44,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:44,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499809090] [2021-11-25 19:02:44,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:44,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:44,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:44,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:44,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:44,683 INFO L87 Difference]: Start difference. First operand 273 states and 299 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) [2021-11-25 19:02:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:45,778 INFO L93 Difference]: Finished difference Result 461 states and 509 transitions. [2021-11-25 19:02:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:45,779 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 [2021-11-25 19:02:45,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:45,783 INFO L225 Difference]: With dead ends: 461 [2021-11-25 19:02:45,783 INFO L226 Difference]: Without dead ends: 461 [2021-11-25 19:02:45,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:45,784 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 218 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:45,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 569 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 19:02:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-25 19:02:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 271. [2021-11-25 19:02:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 155 states have (on average 1.9161290322580644) internal successors, (297), 270 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 297 transitions. [2021-11-25 19:02:45,822 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 297 transitions. Word has length 5 [2021-11-25 19:02:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:45,823 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 297 transitions. [2021-11-25 19:02:45,823 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) [2021-11-25 19:02:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 297 transitions. [2021-11-25 19:02:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:02:45,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:45,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:45,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:46,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:46,036 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1809643625, now seen corresponding path program 1 times [2021-11-25 19:02:46,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:46,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649682269] [2021-11-25 19:02:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:46,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:46,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:46,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:46,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:02:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:46,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:02:46,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:46,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:46,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:46,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649682269] [2021-11-25 19:02:46,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649682269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:46,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:46,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:02:46,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388520558] [2021-11-25 19:02:46,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:46,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:02:46,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:02:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:02:46,223 INFO L87 Difference]: Start difference. First operand 271 states and 297 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:46,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:46,377 INFO L93 Difference]: Finished difference Result 668 states and 734 transitions. [2021-11-25 19:02:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:02:46,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-25 19:02:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:46,384 INFO L225 Difference]: With dead ends: 668 [2021-11-25 19:02:46,385 INFO L226 Difference]: Without dead ends: 668 [2021-11-25 19:02:46,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:46,386 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 587 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:46,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 855 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:02:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-25 19:02:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 275. [2021-11-25 19:02:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 159 states have (on average 1.89937106918239) internal successors, (302), 274 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) [2021-11-25 19:02:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 302 transitions. [2021-11-25 19:02:46,399 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 302 transitions. Word has length 7 [2021-11-25 19:02:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:46,400 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 302 transitions. [2021-11-25 19:02:46,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 302 transitions. [2021-11-25 19:02:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:02:46,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:46,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:46,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:46,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:46,613 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash 642085168, now seen corresponding path program 1 times [2021-11-25 19:02:46,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:46,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23640462] [2021-11-25 19:02:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:46,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:46,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:46,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:46,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:02:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:46,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:02:46,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:46,756 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 [2021-11-25 19:02:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:46,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:46,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:46,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23640462] [2021-11-25 19:02:46,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23640462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:46,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:46,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:46,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847251738] [2021-11-25 19:02:46,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:46,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:46,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:46,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:46,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:46,771 INFO L87 Difference]: Start difference. First operand 275 states and 302 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:47,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:47,424 INFO L93 Difference]: Finished difference Result 324 states and 358 transitions. [2021-11-25 19:02:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:47,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-25 19:02:47,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:47,427 INFO L225 Difference]: With dead ends: 324 [2021-11-25 19:02:47,427 INFO L226 Difference]: Without dead ends: 324 [2021-11-25 19:02:47,428 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 [2021-11-25 19:02:47,428 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 70 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:47,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 464 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:02:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-25 19:02:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 273. [2021-11-25 19:02:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 159 states have (on average 1.8867924528301887) internal successors, (300), 272 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) [2021-11-25 19:02:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 300 transitions. [2021-11-25 19:02:47,439 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 300 transitions. Word has length 9 [2021-11-25 19:02:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:47,440 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 300 transitions. [2021-11-25 19:02:47,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 300 transitions. [2021-11-25 19:02:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:02:47,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:47,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:47,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:47,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:47,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash 642085169, now seen corresponding path program 1 times [2021-11-25 19:02:47,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:47,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624416499] [2021-11-25 19:02:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:47,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:47,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:47,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:47,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 19:02:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:47,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:02:47,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:47,741 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 [2021-11-25 19:02:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:47,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:47,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:47,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624416499] [2021-11-25 19:02:47,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624416499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:47,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:47,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:47,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554777748] [2021-11-25 19:02:47,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:47,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:47,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:47,764 INFO L87 Difference]: Start difference. First operand 273 states and 300 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:48,793 INFO L93 Difference]: Finished difference Result 456 states and 503 transitions. [2021-11-25 19:02:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:48,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-25 19:02:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:48,798 INFO L225 Difference]: With dead ends: 456 [2021-11-25 19:02:48,798 INFO L226 Difference]: Without dead ends: 456 [2021-11-25 19:02:48,799 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 [2021-11-25 19:02:48,800 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 214 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:48,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 562 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 19:02:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-25 19:02:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 271. [2021-11-25 19:02:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 159 states have (on average 1.8742138364779874) internal successors, (298), 270 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) [2021-11-25 19:02:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 298 transitions. [2021-11-25 19:02:48,811 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 298 transitions. Word has length 9 [2021-11-25 19:02:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:48,811 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 298 transitions. [2021-11-25 19:02:48,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 298 transitions. [2021-11-25 19:02:48,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:02:48,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:48,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:48,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:49,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:49,026 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1904018325, now seen corresponding path program 1 times [2021-11-25 19:02:49,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604343396] [2021-11-25 19:02:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:49,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:49,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:49,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:49,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 19:02:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:49,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:02:49,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:49,178 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 [2021-11-25 19:02:49,188 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 [2021-11-25 19:02:49,257 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 15 treesize of output 7 [2021-11-25 19:02:49,271 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 [2021-11-25 19:02:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:49,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:49,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:49,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604343396] [2021-11-25 19:02:49,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604343396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:49,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:49,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:02:49,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498082190] [2021-11-25 19:02:49,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:49,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:02:49,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:49,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:02:49,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:02:49,299 INFO L87 Difference]: Start difference. First operand 271 states and 298 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:50,123 INFO L93 Difference]: Finished difference Result 656 states and 722 transitions. [2021-11-25 19:02:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:02:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-25 19:02:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:50,130 INFO L225 Difference]: With dead ends: 656 [2021-11-25 19:02:50,131 INFO L226 Difference]: Without dead ends: 656 [2021-11-25 19:02:50,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:02:50,134 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 566 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:50,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1338 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:02:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-25 19:02:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 274. [2021-11-25 19:02:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 162 states have (on average 1.8580246913580247) internal successors, (301), 273 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 301 transitions. [2021-11-25 19:02:50,148 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 301 transitions. Word has length 12 [2021-11-25 19:02:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:50,149 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 301 transitions. [2021-11-25 19:02:50,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 301 transitions. [2021-11-25 19:02:50,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:02:50,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:50,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:50,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:50,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:50,365 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash 94773195, now seen corresponding path program 1 times [2021-11-25 19:02:50,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:50,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016369374] [2021-11-25 19:02:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:50,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:50,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:50,368 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:50,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 19:02:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:50,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:02:50,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:50,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:50,597 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:50,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016369374] [2021-11-25 19:02:50,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016369374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:50,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:50,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:02:50,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637629008] [2021-11-25 19:02:50,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:50,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:02:50,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:02:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:50,600 INFO L87 Difference]: Start difference. First operand 274 states and 301 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-25 19:02:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:50,819 INFO L93 Difference]: Finished difference Result 402 states and 440 transitions. [2021-11-25 19:02:50,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:02:50,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2021-11-25 19:02:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:50,823 INFO L225 Difference]: With dead ends: 402 [2021-11-25 19:02:50,824 INFO L226 Difference]: Without dead ends: 402 [2021-11-25 19:02:50,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:02:50,825 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 236 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:50,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1100 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:02:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-25 19:02:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 338. [2021-11-25 19:02:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 226 states have (on average 1.8982300884955752) internal successors, (429), 337 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 429 transitions. [2021-11-25 19:02:50,837 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 429 transitions. Word has length 14 [2021-11-25 19:02:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:50,838 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 429 transitions. [2021-11-25 19:02:50,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-25 19:02:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 429 transitions. [2021-11-25 19:02:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:02:50,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:50,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:50,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-25 19:02:51,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:51,053 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1350258318, now seen corresponding path program 1 times [2021-11-25 19:02:51,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:51,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574269868] [2021-11-25 19:02:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:51,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:51,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:51,054 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:51,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:02:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:51,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:02:51,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:51,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:51,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:51,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574269868] [2021-11-25 19:02:51,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574269868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:51,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:51,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:02:51,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227683288] [2021-11-25 19:02:51,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:51,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:51,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:51,182 INFO L87 Difference]: Start difference. First operand 338 states and 429 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:51,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:51,204 INFO L93 Difference]: Finished difference Result 323 states and 404 transitions. [2021-11-25 19:02:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:51,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-25 19:02:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:51,208 INFO L225 Difference]: With dead ends: 323 [2021-11-25 19:02:51,208 INFO L226 Difference]: Without dead ends: 323 [2021-11-25 19:02:51,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:51,209 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 220 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:51,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 356 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:02:51,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-25 19:02:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-11-25 19:02:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 211 states have (on average 1.914691943127962) internal successors, (404), 322 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 404 transitions. [2021-11-25 19:02:51,221 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 404 transitions. Word has length 15 [2021-11-25 19:02:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:51,221 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 404 transitions. [2021-11-25 19:02:51,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 404 transitions. [2021-11-25 19:02:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:02:51,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:51,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:51,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:51,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:51,436 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 882923631, now seen corresponding path program 1 times [2021-11-25 19:02:51,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:51,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471045102] [2021-11-25 19:02:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:51,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:51,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:51,438 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:51,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 19:02:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:51,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:02:51,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:51,568 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 [2021-11-25 19:02:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:51,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:51,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:51,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471045102] [2021-11-25 19:02:51,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471045102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:51,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:51,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:51,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756889810] [2021-11-25 19:02:51,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:51,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:51,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:51,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:51,578 INFO L87 Difference]: Start difference. First operand 323 states and 404 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2021-11-25 19:02:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:52,181 INFO L93 Difference]: Finished difference Result 307 states and 372 transitions. [2021-11-25 19:02:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:52,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 16 [2021-11-25 19:02:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:52,184 INFO L225 Difference]: With dead ends: 307 [2021-11-25 19:02:52,184 INFO L226 Difference]: Without dead ends: 307 [2021-11-25 19:02:52,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:52,185 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 77 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:52,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 336 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:02:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-25 19:02:52,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-25 19:02:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 211 states have (on average 1.7630331753554502) internal successors, (372), 306 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 372 transitions. [2021-11-25 19:02:52,198 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 372 transitions. Word has length 16 [2021-11-25 19:02:52,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:52,198 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 372 transitions. [2021-11-25 19:02:52,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2021-11-25 19:02:52,199 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 372 transitions. [2021-11-25 19:02:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:02:52,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:52,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:52,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:52,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:52,420 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:52,421 INFO L85 PathProgramCache]: Analyzing trace with hash 882923632, now seen corresponding path program 1 times [2021-11-25 19:02:52,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:52,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46904390] [2021-11-25 19:02:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:52,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:52,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:52,423 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:52,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:02:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:52,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:02:52,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:52,569 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 [2021-11-25 19:02:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:52,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:52,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:52,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46904390] [2021-11-25 19:02:52,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46904390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:52,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:52,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:02:52,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49549973] [2021-11-25 19:02:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:52,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:52,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:52,584 INFO L87 Difference]: Start difference. First operand 307 states and 372 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2021-11-25 19:02:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:53,160 INFO L93 Difference]: Finished difference Result 291 states and 340 transitions. [2021-11-25 19:02:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:53,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 16 [2021-11-25 19:02:53,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:53,163 INFO L225 Difference]: With dead ends: 291 [2021-11-25 19:02:53,163 INFO L226 Difference]: Without dead ends: 291 [2021-11-25 19:02:53,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:53,164 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 61 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:53,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 345 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:02:53,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-25 19:02:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-11-25 19:02:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 211 states have (on average 1.6113744075829384) internal successors, (340), 290 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 340 transitions. [2021-11-25 19:02:53,175 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 340 transitions. Word has length 16 [2021-11-25 19:02:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:53,175 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 340 transitions. [2021-11-25 19:02:53,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2021-11-25 19:02:53,176 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 340 transitions. [2021-11-25 19:02:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:02:53,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:53,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:53,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:53,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:53,393 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:53,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash -276171814, now seen corresponding path program 1 times [2021-11-25 19:02:53,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:53,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808878907] [2021-11-25 19:02:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:53,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:53,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:53,395 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:53,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 19:02:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:53,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:02:53,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:53,575 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 [2021-11-25 19:02:53,648 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:02:53,649 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 [2021-11-25 19:02:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:53,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:53,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:53,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808878907] [2021-11-25 19:02:53,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808878907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:53,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:53,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:02:53,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224912000] [2021-11-25 19:02:53,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:53,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:02:53,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:53,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:02:53,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:53,720 INFO L87 Difference]: Start difference. First operand 291 states and 340 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2021-11-25 19:02:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:54,707 INFO L93 Difference]: Finished difference Result 361 states and 418 transitions. [2021-11-25 19:02:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:02:54,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 16 [2021-11-25 19:02:54,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:54,709 INFO L225 Difference]: With dead ends: 361 [2021-11-25 19:02:54,710 INFO L226 Difference]: Without dead ends: 361 [2021-11-25 19:02:54,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:02:54,710 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 140 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:54,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 612 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 297 Invalid, 0 Unknown, 157 Unchecked, 0.9s Time] [2021-11-25 19:02:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-11-25 19:02:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 293. [2021-11-25 19:02:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 215 states have (on average 1.6046511627906976) internal successors, (345), 292 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 345 transitions. [2021-11-25 19:02:54,719 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 345 transitions. Word has length 16 [2021-11-25 19:02:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:54,720 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 345 transitions. [2021-11-25 19:02:54,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2021-11-25 19:02:54,720 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 345 transitions. [2021-11-25 19:02:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:02:54,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:54,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:54,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:54,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:54,932 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash -276171813, now seen corresponding path program 1 times [2021-11-25 19:02:54,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:54,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030951276] [2021-11-25 19:02:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:54,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:54,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:54,935 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:54,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 19:02:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:55,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:02:55,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:55,144 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 [2021-11-25 19:02:55,153 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 [2021-11-25 19:02:55,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:02:55,288 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 14 [2021-11-25 19:02:55,303 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:02:55,304 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 16 treesize of output 16 [2021-11-25 19:02:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:55,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:55,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:55,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030951276] [2021-11-25 19:02:55,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030951276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:55,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:55,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:02:55,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157639569] [2021-11-25 19:02:55,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:55,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:02:55,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:55,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:02:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:55,351 INFO L87 Difference]: Start difference. First operand 293 states and 345 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2021-11-25 19:02:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:56,998 INFO L93 Difference]: Finished difference Result 406 states and 474 transitions. [2021-11-25 19:02:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:02:56,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 16 [2021-11-25 19:02:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:57,000 INFO L225 Difference]: With dead ends: 406 [2021-11-25 19:02:57,001 INFO L226 Difference]: Without dead ends: 406 [2021-11-25 19:02:57,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:02:57,002 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 298 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:57,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 579 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 19:02:57,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-25 19:02:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 292. [2021-11-25 19:02:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 215 states have (on average 1.6) internal successors, (344), 291 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 344 transitions. [2021-11-25 19:02:57,011 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 344 transitions. Word has length 16 [2021-11-25 19:02:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:57,011 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 344 transitions. [2021-11-25 19:02:57,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2021-11-25 19:02:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 344 transitions. [2021-11-25 19:02:57,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 19:02:57,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:57,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:57,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:57,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:57,224 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:57,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1913905968, now seen corresponding path program 1 times [2021-11-25 19:02:57,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:57,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504350244] [2021-11-25 19:02:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:57,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:57,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:57,226 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:57,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-25 19:02:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:57,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:02:57,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:57,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:57,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:57,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504350244] [2021-11-25 19:02:57,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504350244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:57,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:57,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:02:57,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719087058] [2021-11-25 19:02:57,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:57,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:02:57,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:57,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:02:57,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:57,510 INFO L87 Difference]: Start difference. First operand 292 states and 344 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-11-25 19:02:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:57,755 INFO L93 Difference]: Finished difference Result 392 states and 439 transitions. [2021-11-25 19:02:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:02:57,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 [2021-11-25 19:02:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:57,758 INFO L225 Difference]: With dead ends: 392 [2021-11-25 19:02:57,758 INFO L226 Difference]: Without dead ends: 392 [2021-11-25 19:02:57,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:02:57,759 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 275 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:57,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 963 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:02:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-25 19:02:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 289. [2021-11-25 19:02:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 212 states have (on average 1.5943396226415094) internal successors, (338), 288 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 338 transitions. [2021-11-25 19:02:57,768 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 338 transitions. Word has length 18 [2021-11-25 19:02:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:57,768 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 338 transitions. [2021-11-25 19:02:57,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-11-25 19:02:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 338 transitions. [2021-11-25 19:02:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 19:02:57,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:57,769 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] [2021-11-25 19:02:57,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:57,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:57,969 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:57,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1787332292, now seen corresponding path program 1 times [2021-11-25 19:02:57,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:57,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116503213] [2021-11-25 19:02:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:57,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:57,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:57,972 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:58,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 19:02:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:58,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:02:58,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:58,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:58,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:58,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116503213] [2021-11-25 19:02:58,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116503213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:58,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:58,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:02:58,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396880287] [2021-11-25 19:02:58,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:58,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:02:58,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:02:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:58,188 INFO L87 Difference]: Start difference. First operand 289 states and 338 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:58,337 INFO L93 Difference]: Finished difference Result 312 states and 347 transitions. [2021-11-25 19:02:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:02:58,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-25 19:02:58,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:58,340 INFO L225 Difference]: With dead ends: 312 [2021-11-25 19:02:58,340 INFO L226 Difference]: Without dead ends: 312 [2021-11-25 19:02:58,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:02:58,341 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 655 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:58,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 637 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:02:58,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-25 19:02:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 289. [2021-11-25 19:02:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 212 states have (on average 1.5896226415094339) internal successors, (337), 288 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 337 transitions. [2021-11-25 19:02:58,351 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 337 transitions. Word has length 21 [2021-11-25 19:02:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:58,352 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 337 transitions. [2021-11-25 19:02:58,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 337 transitions. [2021-11-25 19:02:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 19:02:58,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:58,353 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] [2021-11-25 19:02:58,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-25 19:02:58,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:58,568 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:58,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1853899934, now seen corresponding path program 1 times [2021-11-25 19:02:58,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:58,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388360587] [2021-11-25 19:02:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:58,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:58,570 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:58,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 19:02:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:58,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:02:58,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:58,849 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 [2021-11-25 19:02:58,856 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 [2021-11-25 19:02:58,914 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 [2021-11-25 19:02:58,919 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 [2021-11-25 19:02:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:58,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:58,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:58,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388360587] [2021-11-25 19:02:58,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388360587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:58,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:58,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:02:58,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218756857] [2021-11-25 19:02:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:58,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:02:58,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:02:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:02:58,949 INFO L87 Difference]: Start difference. First operand 289 states and 337 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:59,751 INFO L93 Difference]: Finished difference Result 388 states and 434 transitions. [2021-11-25 19:02:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:02:59,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-25 19:02:59,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:59,755 INFO L225 Difference]: With dead ends: 388 [2021-11-25 19:02:59,755 INFO L226 Difference]: Without dead ends: 388 [2021-11-25 19:02:59,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:02:59,756 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 250 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:59,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 1378 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:02:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-25 19:02:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 275. [2021-11-25 19:02:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 198 states have (on average 1.5858585858585859) internal successors, (314), 274 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 314 transitions. [2021-11-25 19:02:59,765 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 314 transitions. Word has length 23 [2021-11-25 19:02:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:59,766 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 314 transitions. [2021-11-25 19:02:59,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 314 transitions. [2021-11-25 19:02:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:02:59,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:59,767 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] [2021-11-25 19:02:59,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-25 19:02:59,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:02:59,980 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:02:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:59,980 INFO L85 PathProgramCache]: Analyzing trace with hash 984415872, now seen corresponding path program 1 times [2021-11-25 19:02:59,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:59,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723639959] [2021-11-25 19:02:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:59,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:59,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:59,983 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:59,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-25 19:03:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:00,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 19:03:00,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:00,262 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:03:00,263 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 21 [2021-11-25 19:03:00,380 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 19:03:00,381 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 32 treesize of output 49 [2021-11-25 19:03:00,597 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 [2021-11-25 19:03:00,762 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:03:00,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 42 [2021-11-25 19:03:01,169 INFO L354 Elim1Store]: treesize reduction 77, result has 36.9 percent of original size [2021-11-25 19:03:01,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 59 treesize of output 90 [2021-11-25 19:03:01,698 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 57 [2021-11-25 19:03:04,874 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 70 treesize of output 53 [2021-11-25 19:03:16,047 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 0 case distinctions, treesize of input 75 treesize of output 43 [2021-11-25 19:03:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:17,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:03:17,814 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_310 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| v_ArrVal_310) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) (_ bv1 1)))) is different from false [2021-11-25 19:03:17,873 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_310 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_309 (_ BitVec 1)) (|v_ULTIMATE.start_main_~#iter~0#1.base_53| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_53|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_53| v_ArrVal_309) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_53| v_ArrVal_310) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|)))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_309)))))) is different from false [2021-11-25 19:03:17,977 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_310 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_309 (_ BitVec 1)) (|v_ULTIMATE.start_main_~#iter~0#1.base_53| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_53|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_309)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_53| v_ArrVal_309) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_53| v_ArrVal_310) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))))))))) (_ bv1 1))))) is different from false [2021-11-25 19:03:18,072 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_310 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_308 (_ BitVec 32)) (v_ArrVal_309 (_ BitVec 1)) (|v_ULTIMATE.start_main_~#iter~0#1.base_53| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_53| v_ArrVal_309) (select (select (store (store |c_#memory_$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_ArrVal_308)) |v_ULTIMATE.start_main_~#iter~0#1.base_53| v_ArrVal_310) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_53|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_309)))))) is different from false [2021-11-25 19:03:18,122 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-25 19:03:18,122 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 44 [2021-11-25 19:03:18,132 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 60 treesize of output 52 [2021-11-25 19:03:18,139 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 24 treesize of output 22 [2021-11-25 19:03:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:34,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723639959] [2021-11-25 19:03:34,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723639959] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:03:34,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:03:34,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 22 [2021-11-25 19:03:34,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47374208] [2021-11-25 19:03:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:34,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:03:34,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:03:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:03:34,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=297, Unknown=9, NotChecked=148, Total=506 [2021-11-25 19:03:34,099 INFO L87 Difference]: Start difference. First operand 275 states and 314 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:37,946 INFO L93 Difference]: Finished difference Result 276 states and 315 transitions. [2021-11-25 19:03:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:03:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-25 19:03:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:37,948 INFO L225 Difference]: With dead ends: 276 [2021-11-25 19:03:37,949 INFO L226 Difference]: Without dead ends: 276 [2021-11-25 19:03:37,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=79, Invalid=479, Unknown=10, NotChecked=188, Total=756 [2021-11-25 19:03:37,950 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 60 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 745 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:37,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1395 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 614 Invalid, 0 Unknown, 745 Unchecked, 1.5s Time] [2021-11-25 19:03:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-25 19:03:37,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2021-11-25 19:03:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 198 states have (on average 1.5808080808080809) internal successors, (313), 273 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 313 transitions. [2021-11-25 19:03:37,959 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 313 transitions. Word has length 24 [2021-11-25 19:03:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:37,959 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 313 transitions. [2021-11-25 19:03:37,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:37,960 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 313 transitions. [2021-11-25 19:03:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:03:37,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:37,961 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] [2021-11-25 19:03:37,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:03:38,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:03:38,176 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:03:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 984415873, now seen corresponding path program 1 times [2021-11-25 19:03:38,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:03:38,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804745992] [2021-11-25 19:03:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:38,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:03:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:03:38,181 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:03:38,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-25 19:03:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:38,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-25 19:03:38,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:38,434 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 [2021-11-25 19:03:38,442 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 [2021-11-25 19:03:38,532 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:03:38,533 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 18 [2021-11-25 19:03:38,563 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:03:38,564 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 25 treesize of output 32 [2021-11-25 19:03:38,647 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 [2021-11-25 19:03:38,657 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 [2021-11-25 19:03:38,727 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:03:38,727 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 49 treesize of output 40 [2021-11-25 19:03:38,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:38,746 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 21 treesize of output 20 [2021-11-25 19:03:38,897 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-25 19:03:38,898 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 40 treesize of output 42 [2021-11-25 19:03:38,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 18 [2021-11-25 19:03:38,973 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 32 treesize of output 30 [2021-11-25 19:03:38,992 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 14 treesize of output 16 [2021-11-25 19:03:39,129 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 43 treesize of output 30 [2021-11-25 19:03:39,137 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 25 treesize of output 20 [2021-11-25 19:03:39,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 10 [2021-11-25 19:03:39,509 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 0 case distinctions, treesize of input 54 treesize of output 20 [2021-11-25 19:03:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:39,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:03:39,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:39,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804745992] [2021-11-25 19:03:39,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804745992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:39,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:39,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 19:03:39,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832962940] [2021-11-25 19:03:39,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:39,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:03:39,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:03:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:03:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:03:39,619 INFO L87 Difference]: Start difference. First operand 274 states and 313 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:40,658 INFO L93 Difference]: Finished difference Result 275 states and 314 transitions. [2021-11-25 19:03:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:03:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-25 19:03:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:40,661 INFO L225 Difference]: With dead ends: 275 [2021-11-25 19:03:40,662 INFO L226 Difference]: Without dead ends: 275 [2021-11-25 19:03:40,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:03:40,663 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 3 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 774 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:40,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1240 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 264 Invalid, 0 Unknown, 774 Unchecked, 1.0s Time] [2021-11-25 19:03:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-25 19:03:40,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2021-11-25 19:03:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 198 states have (on average 1.5757575757575757) internal successors, (312), 272 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 312 transitions. [2021-11-25 19:03:40,671 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 312 transitions. Word has length 24 [2021-11-25 19:03:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:40,671 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 312 transitions. [2021-11-25 19:03:40,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 312 transitions. [2021-11-25 19:03:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:03:40,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:40,673 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] [2021-11-25 19:03:40,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-25 19:03:40,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:03:40,888 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr151ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:03:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:40,888 INFO L85 PathProgramCache]: Analyzing trace with hash -824348362, now seen corresponding path program 1 times [2021-11-25 19:03:40,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:03:40,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650843958] [2021-11-25 19:03:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:40,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:03:40,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:03:40,889 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:03:40,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 19:03:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:41,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:03:41,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:41,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:03:41,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:41,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650843958] [2021-11-25 19:03:41,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650843958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:41,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:41,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:03:41,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916774486] [2021-11-25 19:03:41,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:41,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:03:41,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:03:41,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:03:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:03:41,315 INFO L87 Difference]: Start difference. First operand 273 states and 312 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) [2021-11-25 19:03:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:41,744 INFO L93 Difference]: Finished difference Result 279 states and 318 transitions. [2021-11-25 19:03:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:03:41,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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 [2021-11-25 19:03:41,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:41,748 INFO L225 Difference]: With dead ends: 279 [2021-11-25 19:03:41,748 INFO L226 Difference]: Without dead ends: 275 [2021-11-25 19:03:41,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:03:41,749 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 6 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:41,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 785 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 347 Unchecked, 0.4s Time] [2021-11-25 19:03:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-25 19:03:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274. [2021-11-25 19:03:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 199 states have (on average 1.5728643216080402) internal successors, (313), 273 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 313 transitions. [2021-11-25 19:03:41,757 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 313 transitions. Word has length 25 [2021-11-25 19:03:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:41,757 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 313 transitions. [2021-11-25 19:03:41,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) [2021-11-25 19:03:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 313 transitions. [2021-11-25 19:03:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 19:03:41,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:41,758 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] [2021-11-25 19:03:41,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-25 19:03:41,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:03:41,972 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr123REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:03:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash 221644505, now seen corresponding path program 1 times [2021-11-25 19:03:41,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:03:41,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098564643] [2021-11-25 19:03:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:41,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:03:41,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:03:41,974 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:03:41,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-25 19:03:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:42,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:03:42,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:42,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:03:42,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:42,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098564643] [2021-11-25 19:03:42,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098564643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:42,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:42,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:42,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310950480] [2021-11-25 19:03:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:42,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:42,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:03:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:42,136 INFO L87 Difference]: Start difference. First operand 274 states and 313 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2021-11-25 19:03:42,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:42,149 INFO L93 Difference]: Finished difference Result 256 states and 284 transitions. [2021-11-25 19:03:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 [2021-11-25 19:03:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:42,153 INFO L225 Difference]: With dead ends: 256 [2021-11-25 19:03:42,153 INFO L226 Difference]: Without dead ends: 238 [2021-11-25 19:03:42,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:42,154 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 31 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:42,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 471 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:03:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-25 19:03:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-11-25 19:03:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 163 states have (on average 1.6319018404907975) internal successors, (266), 237 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-11-25 19:03:42,160 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 26 [2021-11-25 19:03:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:42,161 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-11-25 19:03:42,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2021-11-25 19:03:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-11-25 19:03:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 19:03:42,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:42,162 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] [2021-11-25 19:03:42,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-25 19:03:42,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:03:42,374 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:03:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1120078838, now seen corresponding path program 1 times [2021-11-25 19:03:42,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:03:42,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414535524] [2021-11-25 19:03:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:42,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:03:42,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:03:42,377 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:03:42,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-25 19:03:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:42,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:03:42,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:42,580 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 [2021-11-25 19:03:42,613 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:03:42,613 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 22 treesize of output 21 [2021-11-25 19:03:42,626 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 [2021-11-25 19:03:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:42,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:03:42,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:42,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414535524] [2021-11-25 19:03:42,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414535524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:42,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:42,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:03:42,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981088622] [2021-11-25 19:03:42,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:42,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:03:42,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:03:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:03:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:03:42,645 INFO L87 Difference]: Start difference. First operand 238 states and 266 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2021-11-25 19:03:43,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:43,345 INFO L93 Difference]: Finished difference Result 263 states and 293 transitions. [2021-11-25 19:03:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:03:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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 [2021-11-25 19:03:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:43,348 INFO L225 Difference]: With dead ends: 263 [2021-11-25 19:03:43,348 INFO L226 Difference]: Without dead ends: 263 [2021-11-25 19:03:43,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:03:43,349 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 709 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:43,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 739 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:03:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-25 19:03:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 238. [2021-11-25 19:03:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 163 states have (on average 1.6257668711656441) internal successors, (265), 237 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 265 transitions. [2021-11-25 19:03:43,356 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 265 transitions. Word has length 26 [2021-11-25 19:03:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:43,357 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 265 transitions. [2021-11-25 19:03:43,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2021-11-25 19:03:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 265 transitions. [2021-11-25 19:03:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:03:43,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:43,358 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] [2021-11-25 19:03:43,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-25 19:03:43,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:03:43,571 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:03:43,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 119440586, now seen corresponding path program 1 times [2021-11-25 19:03:43,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:03:43,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121322650] [2021-11-25 19:03:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:43,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:03:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:03:43,577 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:03:43,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-25 19:03:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:43,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:03:43,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:43,796 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 [2021-11-25 19:03:43,834 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:03:43,835 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 26 [2021-11-25 19:03:43,895 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:03:43,895 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 28 treesize of output 27 [2021-11-25 19:03:43,915 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 [2021-11-25 19:03:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:03:43,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:03:43,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:43,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121322650] [2021-11-25 19:03:43,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121322650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:43,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:43,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:03:43,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427713104] [2021-11-25 19:03:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:43,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:03:43,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:03:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:03:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:03:43,931 INFO L87 Difference]: Start difference. First operand 238 states and 265 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:45,036 INFO L93 Difference]: Finished difference Result 254 states and 284 transitions. [2021-11-25 19:03:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:03:45,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 [2021-11-25 19:03:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:45,038 INFO L225 Difference]: With dead ends: 254 [2021-11-25 19:03:45,038 INFO L226 Difference]: Without dead ends: 254 [2021-11-25 19:03:45,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:03:45,039 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 51 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:45,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 653 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 19:03:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-25 19:03:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 237. [2021-11-25 19:03:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 163 states have (on average 1.6196319018404908) internal successors, (264), 236 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 264 transitions. [2021-11-25 19:03:45,046 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 264 transitions. Word has length 28 [2021-11-25 19:03:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:45,046 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 264 transitions. [2021-11-25 19:03:45,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 264 transitions. [2021-11-25 19:03:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:03:45,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:45,047 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] [2021-11-25 19:03:45,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-25 19:03:45,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:03:45,251 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:03:45,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:45,252 INFO L85 PathProgramCache]: Analyzing trace with hash 119440587, now seen corresponding path program 1 times [2021-11-25 19:03:45,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:03:45,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352668933] [2021-11-25 19:03:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:45,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:03:45,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:03:45,254 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:03:45,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-25 19:03:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:45,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 19:03:45,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:45,484 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 [2021-11-25 19:03:45,490 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 [2021-11-25 19:03:45,580 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:03:45,581 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 18 [2021-11-25 19:03:45,598 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:03:45,598 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 16 treesize of output 16 [2021-11-25 19:03:45,634 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 [2021-11-25 19:03:45,644 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 [2021-11-25 19:03:45,711 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:03:45,711 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 31 treesize of output 26 [2021-11-25 19:03:45,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:45,721 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 21 treesize of output 20 [2021-11-25 19:03:45,820 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:03:45,821 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 [2021-11-25 19:03:45,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:45,828 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 31 treesize of output 26 [2021-11-25 19:03:45,863 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 13 [2021-11-25 19:03:45,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2021-11-25 19:03:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:45,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:03:45,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:45,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352668933] [2021-11-25 19:03:45,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352668933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:45,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:45,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:03:45,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119461005] [2021-11-25 19:03:45,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:45,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:03:45,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:03:45,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:03:45,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:03:45,899 INFO L87 Difference]: Start difference. First operand 237 states and 264 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:47,772 INFO L93 Difference]: Finished difference Result 261 states and 291 transitions. [2021-11-25 19:03:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:03:47,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 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 [2021-11-25 19:03:47,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:47,774 INFO L225 Difference]: With dead ends: 261 [2021-11-25 19:03:47,774 INFO L226 Difference]: Without dead ends: 261 [2021-11-25 19:03:47,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:03:47,775 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 229 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:47,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 731 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 19:03:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-25 19:03:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 236. [2021-11-25 19:03:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 163 states have (on average 1.6134969325153374) internal successors, (263), 235 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 263 transitions. [2021-11-25 19:03:47,781 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 263 transitions. Word has length 28 [2021-11-25 19:03:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:47,782 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 263 transitions. [2021-11-25 19:03:47,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 263 transitions. [2021-11-25 19:03:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 19:03:47,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:47,783 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] [2021-11-25 19:03:47,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-25 19:03:47,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:03:47,995 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:03:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1996547125, now seen corresponding path program 1 times [2021-11-25 19:03:47,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:03:47,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61018241] [2021-11-25 19:03:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:47,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:03:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:03:47,997 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:03:47,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-25 19:03:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:48,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:03:48,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:48,203 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 13 treesize of output 15 [2021-11-25 19:03:48,223 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 14 [2021-11-25 19:03:48,252 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 14 [2021-11-25 19:03:48,298 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:03:48,299 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 14 treesize of output 14 [2021-11-25 19:03:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:03:48,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:03:48,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:48,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61018241] [2021-11-25 19:03:48,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61018241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:48,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:48,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:03:48,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782747313] [2021-11-25 19:03:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:48,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:03:48,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:03:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:03:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:03:48,333 INFO L87 Difference]: Start difference. First operand 236 states and 263 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 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) [2021-11-25 19:03:49,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:49,069 INFO L93 Difference]: Finished difference Result 259 states and 289 transitions. [2021-11-25 19:03:49,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:03:49,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 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 [2021-11-25 19:03:49,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:49,071 INFO L225 Difference]: With dead ends: 259 [2021-11-25 19:03:49,071 INFO L226 Difference]: Without dead ends: 259 [2021-11-25 19:03:49,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:03:49,072 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 513 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:49,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 264 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:03:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-25 19:03:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 237. [2021-11-25 19:03:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 164 states have (on average 1.6097560975609757) internal successors, (264), 236 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 264 transitions. [2021-11-25 19:03:49,079 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 264 transitions. Word has length 31 [2021-11-25 19:03:49,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:49,079 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 264 transitions. [2021-11-25 19:03:49,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 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) [2021-11-25 19:03:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 264 transitions. [2021-11-25 19:03:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:03:49,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:49,080 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] [2021-11-25 19:03:49,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-25 19:03:49,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:03:49,296 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:03:49,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:49,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1753849390, now seen corresponding path program 1 times [2021-11-25 19:03:49,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:03:49,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531105170] [2021-11-25 19:03:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:49,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:03:49,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:03:49,298 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:03:49,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-25 19:03:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:49,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-25 19:03:49,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:49,628 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 [2021-11-25 19:03:49,677 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 [2021-11-25 19:03:49,689 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 [2021-11-25 19:03:49,755 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:03:49,755 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 19 treesize of output 19 [2021-11-25 19:03:49,791 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 [2021-11-25 19:03:49,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-25 19:03:49,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:49,909 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:03:49,909 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-11-25 19:03:49,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:49,917 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:03:50,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:50,079 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:03:50,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:50,101 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:03:50,101 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-11-25 19:03:50,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:03:50,236 INFO L354 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2021-11-25 19:03:50,237 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2021-11-25 19:03:50,251 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:03:50,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-11-25 19:03:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:50,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:04:40,786 INFO L354 Elim1Store]: treesize reduction 112, result has 22.2 percent of original size [2021-11-25 19:04:40,787 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 2 case distinctions, treesize of input 1933 treesize of output 1572 [2021-11-25 19:04:41,585 INFO L354 Elim1Store]: treesize reduction 76, result has 20.8 percent of original size [2021-11-25 19:04:41,585 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 2 case distinctions, treesize of input 3002 treesize of output 2350 [2021-11-25 19:04:41,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:41,623 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 2350 treesize of output 2232 [2021-11-25 19:04:41,663 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:41,664 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 2232 treesize of output 2114 [2021-11-25 19:04:41,756 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 18 treesize of output 4 [2021-11-25 19:04:41,836 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 18 treesize of output 4 [2021-11-25 19:04:49,848 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 387 treesize of output 373 [2021-11-25 19:04:49,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:49,886 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:49,887 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 361 treesize of output 365 [2021-11-25 19:04:51,219 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 24 treesize of output 22 [2021-11-25 19:04:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:51,276 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:04:51,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531105170] [2021-11-25 19:04:51,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531105170] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:04:51,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1140686897] [2021-11-25 19:04:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:51,277 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:04:51,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:04:51,279 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:04:51,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-25 19:04:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:51,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 19:04:51,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:51,966 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 [2021-11-25 19:04:51,973 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 [2021-11-25 19:04:52,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:52,333 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 [2021-11-25 19:04:52,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:52,346 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 23 treesize of output 22 [2021-11-25 19:04:52,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:52,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:52,587 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:04:52,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:52,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:52,648 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:04:52,649 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 40 [2021-11-25 19:04:52,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:52,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:53,023 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:04:53,025 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 40 [2021-11-25 19:04:53,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:53,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:53,048 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:04:53,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:53,604 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:53,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 36 [2021-11-25 19:04:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:53,631 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:04:53,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-11-25 19:04:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:53,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:04:56,631 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_57| (_ BitVec 32))) (or (and (forall ((v_ArrVal_699 (_ BitVec 32)) (v_ArrVal_698 (_ BitVec 32))) (= (_ bv0 32) (select (let ((.cse0 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_57|) (_ bv0 32) |c_ULTIMATE.start_main_~data~0#1.base|) (_ bv4 32) v_ArrVal_698))) (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_57| .cse0) (select .cse0 (_ bv0 32)))) (bvadd (select (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_57|) (_ bv0 32) |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv4 32) v_ArrVal_699) (_ bv0 32)) (_ bv4 32))))) (forall ((v_ArrVal_699 (_ BitVec 32)) (v_ArrVal_698 (_ BitVec 32))) (= (let ((.cse1 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_57|) (_ bv0 32) |c_ULTIMATE.start_main_~data~0#1.offset|) (_ bv4 32) v_ArrVal_699))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_57| .cse1) (select (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_57|) (_ bv0 32) |c_ULTIMATE.start_main_~data~0#1.base|) (_ bv4 32) v_ArrVal_698) (_ bv0 32))) (bvadd (select .cse1 (_ bv0 32)) (_ bv4 32)))) (_ bv0 32)))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#iter~0#1.base_57|)))) is different from false [2021-11-25 19:04:58,748 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_57| (_ BitVec 32))) (or (and (forall ((v_ArrVal_699 (_ BitVec 32)) (v_ArrVal_698 (_ BitVec 32))) (= (select (let ((.cse0 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_57|) (_ bv0 32) |c_ULTIMATE.start_main_~item~0#1.base|) (_ bv4 32) v_ArrVal_698))) (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_57| .cse0) (select .cse0 (_ bv0 32)))) (bvadd (_ bv4 32) (select (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_57|) (_ bv0 32) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv4 32) v_ArrVal_699) (_ bv0 32)))) (_ bv0 32))) (forall ((v_ArrVal_699 (_ BitVec 32)) (v_ArrVal_698 (_ BitVec 32))) (= (let ((.cse1 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_57|) (_ bv0 32) |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv4 32) v_ArrVal_699))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_57| .cse1) (select (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_57|) (_ bv0 32) |c_ULTIMATE.start_main_~item~0#1.base|) (_ bv4 32) v_ArrVal_698) (_ bv0 32))) (bvadd (_ bv4 32) (select .cse1 (_ bv0 32))))) (_ bv0 32)))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#iter~0#1.base_57|)))) is different from false [2021-11-25 19:04:58,805 INFO L354 Elim1Store]: treesize reduction 106, result has 22.1 percent of original size [2021-11-25 19:04:58,805 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 2 case distinctions, treesize of input 3539 treesize of output 2770 [2021-11-25 19:04:58,850 INFO L354 Elim1Store]: treesize reduction 70, result has 20.5 percent of original size [2021-11-25 19:04:58,850 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 2 case distinctions, treesize of input 8474 treesize of output 6330 [2021-11-25 19:04:58,902 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:58,902 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 6330 treesize of output 5956 [2021-11-25 19:04:58,961 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:58,962 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 5956 treesize of output 5582 [2021-11-25 19:04:59,070 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-25 19:04:59,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016630342] [2021-11-25 19:04:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:59,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:59,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:59,075 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:04:59,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-25 19:04:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:59,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 19:04:59,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:59,312 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 [2021-11-25 19:04:59,380 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 [2021-11-25 19:04:59,389 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 [2021-11-25 19:04:59,457 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:04:59,457 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 19 treesize of output 19 [2021-11-25 19:04:59,480 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 [2021-11-25 19:04:59,485 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 23 treesize of output 22 [2021-11-25 19:04:59,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:59,580 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:04:59,580 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-11-25 19:04:59,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:59,589 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:04:59,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:59,765 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:04:59,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:59,805 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:04:59,805 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-11-25 19:04:59,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:59,922 INFO L354 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2021-11-25 19:04:59,922 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2021-11-25 19:04:59,938 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:04:59,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-11-25 19:04:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:59,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:05:02,564 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_58| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_58|))) (and (forall ((v_ArrVal_699 (_ BitVec 32)) (|ULTIMATE.start_main_~#iter~0#1.offset| (_ BitVec 32)) (v_ArrVal_698 (_ BitVec 32))) (= (let ((.cse1 (bvadd (_ bv4 32) |ULTIMATE.start_main_~#iter~0#1.offset|))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_58|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.offset|) .cse1 v_ArrVal_699))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_58| .cse0) (select (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_58|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.base|) .cse1 v_ArrVal_698) |ULTIMATE.start_main_~#iter~0#1.offset|)) (bvadd (_ bv4 32) (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|))))) (_ bv0 32))) (forall ((v_ArrVal_699 (_ BitVec 32)) (|ULTIMATE.start_main_~#iter~0#1.offset| (_ BitVec 32)) (v_ArrVal_698 (_ BitVec 32))) (= (let ((.cse3 (bvadd (_ bv4 32) |ULTIMATE.start_main_~#iter~0#1.offset|))) (select (let ((.cse2 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_58|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.base|) .cse3 v_ArrVal_698))) (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_58| .cse2) (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|))) (bvadd (_ bv4 32) (select (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_58|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.offset|) .cse3 v_ArrVal_699) |ULTIMATE.start_main_~#iter~0#1.offset|)))) (_ bv0 32)))))) is different from false [2021-11-25 19:05:12,927 INFO L354 Elim1Store]: treesize reduction 112, result has 22.2 percent of original size [2021-11-25 19:05:12,928 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 2 case distinctions, treesize of input 1933 treesize of output 1572 [2021-11-25 19:05:14,079 INFO L354 Elim1Store]: treesize reduction 86, result has 10.4 percent of original size [2021-11-25 19:05:14,080 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 2 case distinctions, treesize of input 4602 treesize of output 3540 [2021-11-25 19:05:14,119 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:05:14,120 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 3540 treesize of output 3360 [2021-11-25 19:05:14,164 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:05:14,165 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 3360 treesize of output 3178 [2021-11-25 19:05:14,255 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 18 treesize of output 4 [2021-11-25 19:05:14,327 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 8 treesize of output 4 [2021-11-25 19:05:19,968 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 420 treesize of output 406 [2021-11-25 19:05:21,466 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 385 treesize of output 381 [2021-11-25 19:05:21,667 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 26 treesize of output 24 [2021-11-25 19:05:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:05:21,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016630342] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:05:21,747 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:05:21,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 11] total 18 [2021-11-25 19:05:21,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122318964] [2021-11-25 19:05:21,748 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:05:21,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:05:21,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:05:21,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:05:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=517, Unknown=21, NotChecked=144, Total=756 [2021-11-25 19:05:21,750 INFO L87 Difference]: Start difference. First operand 237 states and 264 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:06:09,775 WARN L227 SmtUtils]: Spent 25.11s on a formula simplification. DAG size of input: 70 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:06:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:11,575 INFO L93 Difference]: Finished difference Result 300 states and 334 transitions. [2021-11-25 19:06:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:06:11,575 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 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 32 [2021-11-25 19:06:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:11,577 INFO L225 Difference]: With dead ends: 300 [2021-11-25 19:06:11,577 INFO L226 Difference]: Without dead ends: 300 [2021-11-25 19:06:11,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 117.1s TimeCoverageRelationStatistics Valid=106, Invalid=686, Unknown=32, NotChecked=168, Total=992 [2021-11-25 19:06:11,578 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 88 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 832 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:11,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2283 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 390 Invalid, 0 Unknown, 832 Unchecked, 1.7s Time] [2021-11-25 19:06:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-25 19:06:11,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 264. [2021-11-25 19:06:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 191 states have (on average 1.5340314136125655) internal successors, (293), 263 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:06:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 293 transitions. [2021-11-25 19:06:11,584 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 293 transitions. Word has length 32 [2021-11-25 19:06:11,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:11,584 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 293 transitions. [2021-11-25 19:06:11,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:06:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 293 transitions. [2021-11-25 19:06:11,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:06:11,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:11,586 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] [2021-11-25 19:06:11,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-25 19:06:11,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-25 19:06:12,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-25 19:06:12,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:06:12,201 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:06:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1770158664, now seen corresponding path program 1 times [2021-11-25 19:06:12,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:06:12,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484973105] [2021-11-25 19:06:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:12,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:06:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:06:12,203 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:06:12,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-25 19:06:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:12,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-25 19:06:12,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:06:12,482 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:06:12,482 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 23 [2021-11-25 19:06:12,586 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 [2021-11-25 19:06:12,616 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 [2021-11-25 19:06:12,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:06:12,677 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 21 treesize of output 20 [2021-11-25 19:06:12,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:06:12,689 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 21 treesize of output 20 [2021-11-25 19:06:12,824 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 19:06:12,825 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 36 treesize of output 53 [2021-11-25 19:06:13,535 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 [2021-11-25 19:06:13,543 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 23 treesize of output 22 [2021-11-25 19:06:13,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:06:13,977 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:06:13,977 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 67 [2021-11-25 19:06:13,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:06:13,988 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:06:14,927 INFO L354 Elim1Store]: treesize reduction 77, result has 36.9 percent of original size [2021-11-25 19:06:14,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 51 treesize of output 82 [2021-11-25 19:06:15,765 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:06:15,765 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 75 [2021-11-25 19:06:15,782 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 25 treesize of output 30 [2021-11-25 19:06:23,878 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 36 treesize of output 34 [2021-11-25 19:06:23,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:06:23,915 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:06:23,916 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 69 [2021-11-25 19:07:05,793 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:07:05,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 36 [2021-11-25 19:07:10,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:10,768 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-25 19:07:10,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 76 [2021-11-25 19:07:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:07:15,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:17,139 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_913 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| v_ArrVal_912) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| v_ArrVal_913) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (.cse4 (bvadd .cse2 (_ bv4 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| (store v_ArrVal_913 .cse1 .cse3)) .cse3) .cse4))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| .cse0)))))) (_ bv1 1))) (and (= .cse0 (_ bv0 32)) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| (store v_ArrVal_912 .cse1 .cse2)) .cse3) .cse4) (_ bv0 32)))))))) is different from false [2021-11-25 19:07:17,951 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_60| (_ BitVec 32)) (v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_913 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_911 (_ BitVec 1))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_912) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_913) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|)) (.cse3 (bvadd .cse1 (_ bv4 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_913 (_ bv4 32) .cse2)) .cse2) .cse3))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_911) .cse0)))))) (_ bv1 1))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_911) (_ bv1 1)))) (and (= .cse0 (_ bv0 32)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_912 (_ bv4 32) .cse1)) .cse2) .cse3) (_ bv0 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_60|)))))))) is different from false [2021-11-25 19:07:19,856 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_60| (_ BitVec 32)) (v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_913 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_911 (_ BitVec 1))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_912) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_913) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (.cse3 (bvadd .cse1 (_ bv4 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_913 (_ bv4 32) .cse2)) .cse2) .cse3))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_911) .cse0))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_911) (_ bv1 1)))) (and (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_912 (_ bv4 32) .cse1)) .cse2) .cse3) (_ bv0 32)) (= (_ bv0 32) .cse0)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_60|)))))))) is different from false [2021-11-25 19:07:21,963 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_60| (_ BitVec 32)) (v_ArrVal_910 (_ BitVec 32)) (v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_913 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_908 (_ BitVec 32)) (v_ArrVal_911 (_ BitVec 1))) (let ((.cse6 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) .cse6 v_ArrVal_908)))) (let ((.cse2 (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_912) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) .cse6 v_ArrVal_910)))) (let ((.cse3 (select (select (store .cse5 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_913) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (.cse4 (bvadd .cse2 (_ bv4 32)))) (let ((.cse0 (select (select (store .cse5 |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_913 (_ bv4 32) .cse3)) .cse3) .cse4))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_911) .cse0))))))))) (and (= .cse0 (_ bv0 32)) (= (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_912 (_ bv4 32) .cse2)) .cse3) .cse4) (_ bv0 32))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_911) (_ bv1 1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_60|)))))))))) is different from false [2021-11-25 19:07:24,866 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_60| (_ BitVec 32)) (|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_ArrVal_910 (_ BitVec 32)) (v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_913 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_908 (_ BitVec 32)) (v_ArrVal_911 (_ BitVec 1))) (let ((.cse6 (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.offset|) .cse6 v_ArrVal_908)))) (let ((.cse2 (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_912) |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse5 (store |c_#memory_$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| |c_ULTIMATE.start_main_~node~0#1.base|) .cse6 v_ArrVal_910)))) (let ((.cse3 (select (select (store .cse5 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_913) |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse4 (bvadd .cse2 (_ bv4 32)))) (let ((.cse0 (select (select (store .cse5 |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_913 (_ bv4 32) .cse3)) .cse3) .cse4))) (or (and (= (_ bv0 32) .cse0) (= (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_912 (_ bv4 32) .cse2)) .cse3) .cse4) (_ bv0 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_911) .cse0))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_911) (_ bv1 1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_60|)))))))))) is different from false [2021-11-25 19:07:33,015 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_17| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#iter~0#1.base_60| (_ BitVec 32)) (|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_ArrVal_910 (_ BitVec 32)) (v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_902 (_ BitVec 1)) (v_ArrVal_913 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_908 (_ BitVec 32)) (v_ArrVal_911 (_ BitVec 1))) (let ((.cse7 (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_17| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_17|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.offset|) .cse7 v_ArrVal_908)))) (let ((.cse3 (select (select (store .cse2 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_912) |v_ULTIMATE.start_main_~item~0#1.base_17|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse6 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_17| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_17|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.base|) .cse7 v_ArrVal_910)))) (let ((.cse4 (select (select (store .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_913) |v_ULTIMATE.start_main_~item~0#1.base_17|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse5 (bvadd (_ bv4 32) .cse3))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_17| v_ArrVal_902)) (.cse1 (select (select (store .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_913 (_ bv4 32) .cse4)) .cse4) .cse5))) (or (not (= (_ bv0 1) (bvneg (select .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_60|)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_911) .cse1))))))))))))))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_902) (_ bv1 1)))) (and (= (select (select (store .cse2 |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_912 (_ bv4 32) .cse3)) .cse4) .cse5) (_ bv0 32)) (= .cse1 (_ bv0 32))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_17|)))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_911) (_ bv1 1))))))))))) is different from false [2021-11-25 19:07:52,667 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_17| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#iter~0#1.base_60| (_ BitVec 32)) (|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_ArrVal_910 (_ BitVec 32)) (v_ArrVal_899 (_ BitVec 32)) (v_ArrVal_898 (_ BitVec 32)) (v_ArrVal_912 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_902 (_ BitVec 1)) (v_ArrVal_913 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_908 (_ BitVec 32)) (v_ArrVal_911 (_ BitVec 1))) (let ((.cse8 (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse1 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~node~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~node~0#1.base|) |c_ULTIMATE.start_main_~node~0#1.offset| v_ArrVal_899)))) (store .cse9 |v_ULTIMATE.start_main_~item~0#1.base_17| (store (store (select .cse9 |v_ULTIMATE.start_main_~item~0#1.base_17|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.offset|) .cse8 v_ArrVal_908))))) (let ((.cse2 (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_912) |v_ULTIMATE.start_main_~item~0#1.base_17|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~node~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~node~0#1.base|) |c_ULTIMATE.start_main_~node~0#1.offset| v_ArrVal_898)))) (store .cse7 |v_ULTIMATE.start_main_~item~0#1.base_17| (store (store (select .cse7 |v_ULTIMATE.start_main_~item~0#1.base_17|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.base|) .cse8 v_ArrVal_910))))) (let ((.cse3 (select (select (store .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_913) |v_ULTIMATE.start_main_~item~0#1.base_17|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse4 (bvadd .cse2 (_ bv4 32)))) (let ((.cse5 (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_17| v_ArrVal_902)) (.cse0 (select (select (store .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_913 (_ bv4 32) .cse3)) .cse3) .cse4))) (or (and (= .cse0 (_ bv0 32)) (= (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_60| (store v_ArrVal_912 (_ bv4 32) .cse2)) .cse3) .cse4) (_ bv0 32))) (not (= (_ bv0 1) (bvneg (select .cse5 |v_ULTIMATE.start_main_~#iter~0#1.base_60|)))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_902) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_17|)))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_911) (_ bv1 1)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse5 |v_ULTIMATE.start_main_~#iter~0#1.base_60| v_ArrVal_911) .cse0))))))))))))))) (_ bv1 1)))))))))) is different from false [2021-11-25 19:08:27,827 WARN L227 SmtUtils]: Spent 35.10s on a formula simplification. DAG size of input: 65 DAG size of output: 42 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 19:08:27,828 INFO L354 Elim1Store]: treesize reduction 167, result has 32.1 percent of original size [2021-11-25 19:08:27,828 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 603 treesize of output 408 [2021-11-25 19:08:27,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:27,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:01,141 WARN L227 SmtUtils]: Spent 33.27s on a formula simplification. DAG size of input: 54 DAG size of output: 42 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 19:09:01,142 INFO L354 Elim1Store]: treesize reduction 100, result has 44.1 percent of original size [2021-11-25 19:09:01,142 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 330 treesize of output 213 [2021-11-25 19:09:01,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:01,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:05,453 INFO L354 Elim1Store]: treesize reduction 58, result has 33.3 percent of original size [2021-11-25 19:09:05,453 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 5 case distinctions, treesize of input 270 treesize of output 226 [2021-11-25 19:09:05,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:05,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:05,777 INFO L354 Elim1Store]: treesize reduction 41, result has 24.1 percent of original size [2021-11-25 19:09:05,777 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 5 case distinctions, treesize of input 194 treesize of output 168 [2021-11-25 19:09:05,824 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 140 treesize of output 132 [2021-11-25 19:09:05,858 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 71 treesize of output 67 [2021-11-25 19:09:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:09:11,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:11,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484973105] [2021-11-25 19:09:11,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484973105] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:11,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:09:11,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [14] total 33 [2021-11-25 19:09:11,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166609473] [2021-11-25 19:09:11,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:11,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 19:09:11,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:11,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 19:09:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=583, Unknown=7, NotChecked=378, Total=1056 [2021-11-25 19:09:11,703 INFO L87 Difference]: Start difference. First operand 264 states and 293 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:14,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:19,078 INFO L93 Difference]: Finished difference Result 280 states and 311 transitions. [2021-11-25 19:09:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 19:09:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-25 19:09:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:19,080 INFO L225 Difference]: With dead ends: 280 [2021-11-25 19:09:19,080 INFO L226 Difference]: Without dead ends: 280 [2021-11-25 19:09:19,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=137, Invalid=1074, Unknown=7, NotChecked=504, Total=1722 [2021-11-25 19:09:19,081 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 47 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1189 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:19,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 2335 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1241 Invalid, 1 Unknown, 1189 Unchecked, 6.0s Time] [2021-11-25 19:09:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-25 19:09:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 270. [2021-11-25 19:09:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 269 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 301 transitions. [2021-11-25 19:09:19,088 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 301 transitions. Word has length 32 [2021-11-25 19:09:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:19,088 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 301 transitions. [2021-11-25 19:09:19,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 301 transitions. [2021-11-25 19:09:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:09:19,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:19,089 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] [2021-11-25 19:09:19,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:19,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:19,299 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:09:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1770158665, now seen corresponding path program 1 times [2021-11-25 19:09:19,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:19,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006836343] [2021-11-25 19:09:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:19,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:19,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:19,301 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:19,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-25 19:09:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:19,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-25 19:09:19,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:19,574 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 [2021-11-25 19:09:19,597 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 [2021-11-25 19:09:19,606 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 [2021-11-25 19:09:19,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:09:19,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,654 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 21 treesize of output 20 [2021-11-25 19:09:19,698 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:09:19,699 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 20 treesize of output 27 [2021-11-25 19:09:19,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 19:09:19,801 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 23 treesize of output 22 [2021-11-25 19:09:19,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,895 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:09:19,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,927 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:09:19,927 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 49 [2021-11-25 19:09:20,078 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 [2021-11-25 19:09:20,120 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-25 19:09:20,121 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 29 treesize of output 31 [2021-11-25 19:09:20,252 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:09:20,253 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 47 [2021-11-25 19:09:20,263 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 25 treesize of output 30 [2021-11-25 19:09:20,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:20,465 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:09:20,465 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 45 [2021-11-25 19:09:20,474 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 36 treesize of output 34 [2021-11-25 19:09:21,421 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:09:21,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 73 [2021-11-25 19:09:21,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:21,470 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-25 19:09:21,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 91 treesize of output 64 [2021-11-25 19:09:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:09:21,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:21,656 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:21,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006836343] [2021-11-25 19:09:21,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006836343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:21,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:21,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 19:09:21,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530409572] [2021-11-25 19:09:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:21,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:09:21,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:09:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:09:21,658 INFO L87 Difference]: Start difference. First operand 270 states and 301 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:22,893 INFO L93 Difference]: Finished difference Result 264 states and 291 transitions. [2021-11-25 19:09:22,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:09:22,894 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-25 19:09:22,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:22,895 INFO L225 Difference]: With dead ends: 264 [2021-11-25 19:09:22,895 INFO L226 Difference]: Without dead ends: 264 [2021-11-25 19:09:22,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:09:22,896 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 2 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 795 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:22,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1511 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 332 Invalid, 0 Unknown, 795 Unchecked, 1.1s Time] [2021-11-25 19:09:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-25 19:09:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-11-25 19:09:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 191 states have (on average 1.5235602094240839) internal successors, (291), 263 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 291 transitions. [2021-11-25 19:09:22,900 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 291 transitions. Word has length 32 [2021-11-25 19:09:22,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:22,901 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 291 transitions. [2021-11-25 19:09:22,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 291 transitions. [2021-11-25 19:09:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:09:22,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:22,902 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] [2021-11-25 19:09:22,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:23,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:23,114 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:09:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1113148053, now seen corresponding path program 1 times [2021-11-25 19:09:23,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:23,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970381240] [2021-11-25 19:09:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:23,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:23,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:23,116 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:23,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-25 19:09:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:23,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:09:23,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:23,295 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 [2021-11-25 19:09:23,302 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 [2021-11-25 19:09:23,350 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 [2021-11-25 19:09:23,353 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 [2021-11-25 19:09:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:09:23,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:23,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:23,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970381240] [2021-11-25 19:09:23,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970381240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:23,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:23,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:09:23,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913475473] [2021-11-25 19:09:23,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:23,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:09:23,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:23,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:09:23,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:09:23,377 INFO L87 Difference]: Start difference. First operand 264 states and 291 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:24,077 INFO L93 Difference]: Finished difference Result 270 states and 297 transitions. [2021-11-25 19:09:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:09:24,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-11-25 19:09:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:24,080 INFO L225 Difference]: With dead ends: 270 [2021-11-25 19:09:24,080 INFO L226 Difference]: Without dead ends: 270 [2021-11-25 19:09:24,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:09:24,081 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 2 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:24,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 833 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:09:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-25 19:09:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2021-11-25 19:09:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 267 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 295 transitions. [2021-11-25 19:09:24,085 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 295 transitions. Word has length 37 [2021-11-25 19:09:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:24,085 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 295 transitions. [2021-11-25 19:09:24,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:24,085 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 295 transitions. [2021-11-25 19:09:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 19:09:24,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:24,085 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] [2021-11-25 19:09:24,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:24,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:24,286 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:09:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:24,286 INFO L85 PathProgramCache]: Analyzing trace with hash 222305361, now seen corresponding path program 1 times [2021-11-25 19:09:24,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:24,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676876882] [2021-11-25 19:09:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:24,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:24,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:24,288 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:24,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-25 19:09:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:24,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:09:24,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:24,518 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 [2021-11-25 19:09:24,565 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:09:24,566 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 17 treesize of output 17 [2021-11-25 19:09:24,753 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 19 treesize of output 21 [2021-11-25 19:09:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:09:24,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:24,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:24,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676876882] [2021-11-25 19:09:24,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676876882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:24,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:24,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:09:24,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491924194] [2021-11-25 19:09:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:24,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:09:24,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:24,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:09:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:09:24,772 INFO L87 Difference]: Start difference. First operand 268 states and 295 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:26,390 INFO L93 Difference]: Finished difference Result 414 states and 457 transitions. [2021-11-25 19:09:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:09:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-11-25 19:09:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:26,392 INFO L225 Difference]: With dead ends: 414 [2021-11-25 19:09:26,393 INFO L226 Difference]: Without dead ends: 414 [2021-11-25 19:09:26,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:09:26,394 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 555 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:26,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 579 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 19:09:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-25 19:09:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 271. [2021-11-25 19:09:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 200 states have (on average 1.51) internal successors, (302), 270 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) [2021-11-25 19:09:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 302 transitions. [2021-11-25 19:09:26,401 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 302 transitions. Word has length 39 [2021-11-25 19:09:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:26,401 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 302 transitions. [2021-11-25 19:09:26,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 302 transitions. [2021-11-25 19:09:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 19:09:26,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:26,402 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] [2021-11-25 19:09:26,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:26,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:26,615 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:09:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash 222305362, now seen corresponding path program 1 times [2021-11-25 19:09:26,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:26,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746011426] [2021-11-25 19:09:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:26,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:26,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:26,617 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:26,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-25 19:09:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:26,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:09:26,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:26,964 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 [2021-11-25 19:09:26,973 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 [2021-11-25 19:09:27,044 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:09:27,044 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 [2021-11-25 19:09:27,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:27,051 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 21 treesize of output 20 [2021-11-25 19:09:27,144 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:09:27,144 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 [2021-11-25 19:09:27,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:27,153 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 21 treesize of output 20 [2021-11-25 19:09:27,175 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 [2021-11-25 19:09:27,179 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 [2021-11-25 19:09:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:09:27,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:27,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:27,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746011426] [2021-11-25 19:09:27,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746011426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:27,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:27,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:09:27,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616701118] [2021-11-25 19:09:27,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:27,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:09:27,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:09:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:09:27,304 INFO L87 Difference]: Start difference. First operand 271 states and 302 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:29,283 INFO L93 Difference]: Finished difference Result 416 states and 468 transitions. [2021-11-25 19:09:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:09:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-11-25 19:09:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:29,286 INFO L225 Difference]: With dead ends: 416 [2021-11-25 19:09:29,286 INFO L226 Difference]: Without dead ends: 416 [2021-11-25 19:09:29,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:09:29,287 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 919 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:29,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 807 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 19:09:29,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-25 19:09:29,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 335. [2021-11-25 19:09:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 264 states have (on average 1.5113636363636365) internal successors, (399), 334 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 399 transitions. [2021-11-25 19:09:29,294 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 399 transitions. Word has length 39 [2021-11-25 19:09:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:29,295 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 399 transitions. [2021-11-25 19:09:29,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:29,295 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 399 transitions. [2021-11-25 19:09:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 19:09:29,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:29,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:29,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:29,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:29,509 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:09:29,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash 850884481, now seen corresponding path program 2 times [2021-11-25 19:09:29,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:29,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623494840] [2021-11-25 19:09:29,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:09:29,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:29,510 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:29,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-25 19:09:29,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:09:29,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:09:29,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-25 19:09:29,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:29,831 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 [2021-11-25 19:09:29,881 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:09:29,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 27 [2021-11-25 19:09:30,068 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:09:30,068 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 23 treesize of output 32 [2021-11-25 19:09:30,418 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 [2021-11-25 19:09:30,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:30,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-25 19:09:31,303 INFO L354 Elim1Store]: treesize reduction 39, result has 55.2 percent of original size [2021-11-25 19:09:31,303 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 47 treesize of output 83 [2021-11-25 19:09:31,982 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 0 case distinctions, treesize of input 93 treesize of output 79 [2021-11-25 19:09:32,697 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 [2021-11-25 19:09:34,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:34,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:34,414 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 19:09:34,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 154 treesize of output 106 [2021-11-25 19:09:35,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:35,160 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 21 treesize of output 20 [2021-11-25 19:09:41,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:41,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:41,407 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-25 19:09:41,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 182 treesize of output 122 [2021-11-25 19:09:42,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:42,095 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 21 treesize of output 20 [2021-11-25 19:09:43,695 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 [2021-11-25 19:09:44,635 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 19:09:44,635 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 4 case distinctions, treesize of input 186 treesize of output 123 [2021-11-25 19:09:48,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 93 [2021-11-25 19:09:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:09:49,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:49,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:49,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623494840] [2021-11-25 19:09:49,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623494840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:49,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:49,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-25 19:09:49,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084174962] [2021-11-25 19:09:49,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:49,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 19:09:49,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:49,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 19:09:49,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:09:49,240 INFO L87 Difference]: Start difference. First operand 335 states and 399 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 21 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) [2021-11-25 19:09:51,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:51,202 INFO L93 Difference]: Finished difference Result 356 states and 423 transitions. [2021-11-25 19:09:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 19:09:51,202 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 21 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 [2021-11-25 19:09:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:51,204 INFO L225 Difference]: With dead ends: 356 [2021-11-25 19:09:51,204 INFO L226 Difference]: Without dead ends: 356 [2021-11-25 19:09:51,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 19:09:51,205 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 85 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1602 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:51,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1960 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 245 Invalid, 0 Unknown, 1602 Unchecked, 0.6s Time] [2021-11-25 19:09:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-25 19:09:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 334. [2021-11-25 19:09:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 264 states have (on average 1.5075757575757576) internal successors, (398), 333 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:51,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 398 transitions. [2021-11-25 19:09:51,212 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 398 transitions. Word has length 41 [2021-11-25 19:09:51,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:51,213 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 398 transitions. [2021-11-25 19:09:51,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 21 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) [2021-11-25 19:09:51,213 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 398 transitions. [2021-11-25 19:09:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 19:09:51,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:51,214 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:51,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:51,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:51,415 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:09:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash 850884482, now seen corresponding path program 1 times [2021-11-25 19:09:51,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:51,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409187266] [2021-11-25 19:09:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:51,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:51,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:51,417 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:51,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-25 19:09:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:51,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-25 19:09:51,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:51,782 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 [2021-11-25 19:09:51,790 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 [2021-11-25 19:09:51,890 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:09:51,890 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 18 [2021-11-25 19:09:51,924 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:09:51,924 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 17 treesize of output 17 [2021-11-25 19:09:52,009 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 [2021-11-25 19:09:52,029 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:09:52,029 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:09:52,104 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 [2021-11-25 19:09:52,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:52,171 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 22 treesize of output 21 [2021-11-25 19:09:52,193 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 [2021-11-25 19:09:52,376 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-11-25 19:09:52,376 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 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-25 19:09:52,414 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:09:52,414 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 17 treesize of output 17 [2021-11-25 19:09:52,489 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 [2021-11-25 19:09:52,503 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 0 case distinctions, treesize of input 33 treesize of output 31 [2021-11-25 19:09:52,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:52,787 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-11-25 19:09:52,788 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 5 case distinctions, treesize of input 75 treesize of output 59 [2021-11-25 19:09:52,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:52,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:09:53,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:53,093 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 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:09:53,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:53,138 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-11-25 19:09:53,138 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 5 case distinctions, treesize of input 75 treesize of output 59 [2021-11-25 19:09:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:53,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:53,467 INFO L354 Elim1Store]: treesize reduction 139, result has 14.7 percent of original size [2021-11-25 19:09:53,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 112 treesize of output 80 [2021-11-25 19:09:53,475 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:09:53,475 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 1 case distinctions, treesize of input 86 treesize of output 71 [2021-11-25 19:09:53,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-25 19:09:53,608 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 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-25 19:09:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:09:53,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:53,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:53,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409187266] [2021-11-25 19:09:53,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409187266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:53,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:53,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 19:09:53,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907103815] [2021-11-25 19:09:53,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:53,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:09:53,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:53,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:09:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:09:53,700 INFO L87 Difference]: Start difference. First operand 334 states and 398 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 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) [2021-11-25 19:09:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:59,220 INFO L93 Difference]: Finished difference Result 344 states and 408 transitions. [2021-11-25 19:09:59,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:09:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 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 [2021-11-25 19:09:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:59,222 INFO L225 Difference]: With dead ends: 344 [2021-11-25 19:09:59,223 INFO L226 Difference]: Without dead ends: 344 [2021-11-25 19:09:59,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2021-11-25 19:09:59,223 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 87 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:59,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1666 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1405 Invalid, 0 Unknown, 278 Unchecked, 4.3s Time] [2021-11-25 19:09:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-25 19:09:59,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 333. [2021-11-25 19:09:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 264 states have (on average 1.503787878787879) internal successors, (397), 332 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 397 transitions. [2021-11-25 19:09:59,229 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 397 transitions. Word has length 41 [2021-11-25 19:09:59,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:59,229 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 397 transitions. [2021-11-25 19:09:59,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 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) [2021-11-25 19:09:59,229 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 397 transitions. [2021-11-25 19:09:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:09:59,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:59,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:59,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:59,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:59,430 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:09:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:59,431 INFO L85 PathProgramCache]: Analyzing trace with hash 126379606, now seen corresponding path program 1 times [2021-11-25 19:09:59,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:59,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633466759] [2021-11-25 19:09:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:59,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:59,434 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:59,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-25 19:09:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:59,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:09:59,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:09:59,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:59,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:59,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633466759] [2021-11-25 19:09:59,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633466759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:59,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:59,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:09:59,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446324944] [2021-11-25 19:09:59,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:59,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:09:59,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:09:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:09:59,733 INFO L87 Difference]: Start difference. First operand 333 states and 397 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:00,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:00,066 INFO L93 Difference]: Finished difference Result 451 states and 502 transitions. [2021-11-25 19:10:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:10:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-25 19:10:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:00,068 INFO L225 Difference]: With dead ends: 451 [2021-11-25 19:10:00,068 INFO L226 Difference]: Without dead ends: 451 [2021-11-25 19:10:00,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:10:00,070 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 916 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:00,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 753 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:10:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-25 19:10:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 332. [2021-11-25 19:10:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 263 states have (on average 1.494296577946768) internal successors, (393), 331 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 393 transitions. [2021-11-25 19:10:00,077 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 393 transitions. Word has length 43 [2021-11-25 19:10:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:00,077 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 393 transitions. [2021-11-25 19:10:00,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 393 transitions. [2021-11-25 19:10:00,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:10:00,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:00,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:00,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:00,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:10:00,291 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:10:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash 355200729, now seen corresponding path program 1 times [2021-11-25 19:10:00,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:10:00,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526440219] [2021-11-25 19:10:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:00,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:10:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:10:00,293 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:10:00,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-25 19:10:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:00,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:10:00,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:00,578 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 [2021-11-25 19:10:00,634 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:10:00,634 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 [2021-11-25 19:10:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:10:00,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:00,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:10:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526440219] [2021-11-25 19:10:00,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526440219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:00,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:10:00,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:10:00,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68706964] [2021-11-25 19:10:00,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:00,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:10:00,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:10:00,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:10:00,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:10:00,693 INFO L87 Difference]: Start difference. First operand 332 states and 393 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 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) [2021-11-25 19:10:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:01,153 INFO L93 Difference]: Finished difference Result 338 states and 399 transitions. [2021-11-25 19:10:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:10:01,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 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 [2021-11-25 19:10:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:01,155 INFO L225 Difference]: With dead ends: 338 [2021-11-25 19:10:01,155 INFO L226 Difference]: Without dead ends: 338 [2021-11-25 19:10:01,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:10:01,155 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 68 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:01,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 407 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 128 Unchecked, 0.4s Time] [2021-11-25 19:10:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-25 19:10:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2021-11-25 19:10:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 267 states have (on average 1.4906367041198503) internal successors, (398), 335 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 398 transitions. [2021-11-25 19:10:01,161 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 398 transitions. Word has length 45 [2021-11-25 19:10:01,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:01,161 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 398 transitions. [2021-11-25 19:10:01,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 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) [2021-11-25 19:10:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 398 transitions. [2021-11-25 19:10:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:10:01,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:01,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:01,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:01,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:10:01,362 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:10:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash 355200730, now seen corresponding path program 1 times [2021-11-25 19:10:01,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:10:01,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107069087] [2021-11-25 19:10:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:01,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:10:01,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:10:01,364 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:10:01,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-25 19:10:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:01,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:10:01,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:01,655 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 [2021-11-25 19:10:01,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:01,917 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 14 [2021-11-25 19:10:01,927 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:10:01,928 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 15 treesize of output 15 [2021-11-25 19:10:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:10:01,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:01,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:10:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107069087] [2021-11-25 19:10:01,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107069087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:01,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:10:01,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:10:01,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705507663] [2021-11-25 19:10:01,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:01,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:10:01,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:10:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:10:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:10:01,968 INFO L87 Difference]: Start difference. First operand 336 states and 398 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 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) [2021-11-25 19:10:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:04,036 INFO L93 Difference]: Finished difference Result 453 states and 505 transitions. [2021-11-25 19:10:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:10:04,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 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 [2021-11-25 19:10:04,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:04,040 INFO L225 Difference]: With dead ends: 453 [2021-11-25 19:10:04,040 INFO L226 Difference]: Without dead ends: 453 [2021-11-25 19:10:04,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:10:04,041 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 1631 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:04,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1631 Valid, 492 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 19:10:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-25 19:10:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 337. [2021-11-25 19:10:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 268 states have (on average 1.4850746268656716) internal successors, (398), 336 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 398 transitions. [2021-11-25 19:10:04,047 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 398 transitions. Word has length 45 [2021-11-25 19:10:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:04,047 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 398 transitions. [2021-11-25 19:10:04,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 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) [2021-11-25 19:10:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 398 transitions. [2021-11-25 19:10:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 19:10:04,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:04,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:04,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:04,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:10:04,249 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:10:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1001029173, now seen corresponding path program 1 times [2021-11-25 19:10:04,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:10:04,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129248403] [2021-11-25 19:10:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:04,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:10:04,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:10:04,251 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:10:04,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-25 19:10:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:04,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 19:10:04,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:04,593 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 [2021-11-25 19:10:04,648 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 [2021-11-25 19:10:04,657 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 [2021-11-25 19:10:04,778 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:10:04,778 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 16 treesize of output 16 [2021-11-25 19:10:04,843 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 14 treesize of output 16 [2021-11-25 19:10:04,853 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 14 treesize of output 16 [2021-11-25 19:10:04,909 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 14 treesize of output 16 [2021-11-25 19:10:04,926 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 14 treesize of output 16 [2021-11-25 19:10:05,053 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 14 treesize of output 16 [2021-11-25 19:10:05,061 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 14 treesize of output 16 [2021-11-25 19:10:05,127 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 14 treesize of output 16 [2021-11-25 19:10:05,132 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 14 treesize of output 16 [2021-11-25 19:10:05,306 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 [2021-11-25 19:10:05,309 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 [2021-11-25 19:10:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:10:05,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:10:05,604 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1659 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| v_ArrVal_1659) |c_ULTIMATE.start_main_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)))) (forall ((v_ArrVal_1660 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| v_ArrVal_1660) |c_ULTIMATE.start_main_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))) is different from false [2021-11-25 19:10:06,125 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:10:06,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-11-25 19:10:06,133 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:10:06,133 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2021-11-25 19:10:06,137 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 60 treesize of output 48 [2021-11-25 19:10:06,140 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 62 treesize of output 50 [2021-11-25 19:10:06,144 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 41 treesize of output 37 [2021-11-25 19:10:06,147 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 37 treesize of output 33 [2021-11-25 19:10:06,332 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 22 treesize of output 20 [2021-11-25 19:10:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:10:06,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:10:06,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129248403] [2021-11-25 19:10:06,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129248403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:10:06,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1858537868] [2021-11-25 19:10:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:06,389 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:10:06,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:10:06,391 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:10:06,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2021-11-25 19:10:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:06,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 19:10:06,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:07,050 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 [2021-11-25 19:10:07,062 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 [2021-11-25 19:10:07,348 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:10:07,348 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 14 treesize of output 20 [2021-11-25 19:10:07,400 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:10:07,401 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 14 treesize of output 20 [2021-11-25 19:10:07,575 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:10:07,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 20 [2021-11-25 19:10:07,619 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:10:07,619 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 14 treesize of output 20 [2021-11-25 19:10:07,931 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:10:07,932 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 14 treesize of output 20 [2021-11-25 19:10:07,972 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:10:07,972 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 14 treesize of output 20 [2021-11-25 19:10:08,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:08,128 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 14 treesize of output 16 [2021-11-25 19:10:08,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:08,143 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 14 treesize of output 16 [2021-11-25 19:10:08,558 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 [2021-11-25 19:10:08,564 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 [2021-11-25 19:10:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:10:08,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:10:08,816 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1734 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| v_ArrVal_1734) |c_ULTIMATE.start_main_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)) (_ bv0 32))) (forall ((v_ArrVal_1733 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| v_ArrVal_1733) |c_ULTIMATE.start_main_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)) (_ bv0 32)))) is different from false [2021-11-25 19:10:11,007 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_67| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1734 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_67| v_ArrVal_1734) |c_ULTIMATE.start_main_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|)) (_ bv0 32))) (forall ((v_ArrVal_1733 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_67| v_ArrVal_1733) |c_ULTIMATE.start_main_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~data~0#1.offset|))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#iter~0#1.base_67|)))) is different from false [2021-11-25 19:10:13,086 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_67| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1733 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_67| v_ArrVal_1733) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|)) (_ bv0 32))) (forall ((v_ArrVal_1734 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_67| v_ArrVal_1734) |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#iter~0#1.base_67|)))) is different from false [2021-11-25 19:10:13,101 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:10:13,101 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-11-25 19:10:13,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:10:13,110 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2021-11-25 19:10:13,114 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 60 treesize of output 48 [2021-11-25 19:10:13,118 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 62 treesize of output 50 [2021-11-25 19:10:13,122 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 41 treesize of output 37 [2021-11-25 19:10:13,126 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 37 treesize of output 33 [2021-11-25 19:10:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2021-11-25 19:10:13,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1858537868] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:10:13,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054260394] [2021-11-25 19:10:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:13,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:13,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:10:13,335 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:10:13,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-25 19:10:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:13,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-25 19:10:13,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:13,571 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 [2021-11-25 19:10:13,762 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:10:13,762 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 15 treesize of output 15 [2021-11-25 19:10:13,857 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 [2021-11-25 19:10:13,868 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 [2021-11-25 19:10:14,026 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:10:14,027 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 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:10:14,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:14,039 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 21 treesize of output 20 [2021-11-25 19:10:14,199 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:10:14,200 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 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:10:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:14,209 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 21 treesize of output 20 [2021-11-25 19:10:14,572 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:10:14,573 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 47 [2021-11-25 19:10:14,581 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 36 treesize of output 30 [2021-11-25 19:10:14,587 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 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-25 19:10:14,591 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 28 treesize of output 22 [2021-11-25 19:10:14,819 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 [2021-11-25 19:10:14,822 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 [2021-11-25 19:10:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:10:14,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:14,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054260394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:14,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:10:14,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11, 11, 11, 11] total 36 [2021-11-25 19:10:14,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357161140] [2021-11-25 19:10:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:14,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:10:14,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:10:14,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:10:14,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=901, Unknown=12, NotChecked=252, Total=1260 [2021-11-25 19:10:14,846 INFO L87 Difference]: Start difference. First operand 337 states and 398 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:17,645 INFO L93 Difference]: Finished difference Result 346 states and 407 transitions. [2021-11-25 19:10:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:10:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-25 19:10:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:17,646 INFO L225 Difference]: With dead ends: 346 [2021-11-25 19:10:17,646 INFO L226 Difference]: Without dead ends: 346 [2021-11-25 19:10:17,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 198 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=147, Invalid=1339, Unknown=12, NotChecked=308, Total=1806 [2021-11-25 19:10:17,647 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 56 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:17,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1984 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 775 Invalid, 0 Unknown, 212 Unchecked, 2.3s Time] [2021-11-25 19:10:17,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-25 19:10:17,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2021-11-25 19:10:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 275 states have (on average 1.4727272727272727) internal successors, (405), 343 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:17,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 405 transitions. [2021-11-25 19:10:17,654 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 405 transitions. Word has length 48 [2021-11-25 19:10:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:17,654 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 405 transitions. [2021-11-25 19:10:17,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 405 transitions. [2021-11-25 19:10:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:10:17,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:17,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:17,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:17,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:18,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:18,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:18,270 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:10:18,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash -5287883, now seen corresponding path program 1 times [2021-11-25 19:10:18,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:10:18,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787274133] [2021-11-25 19:10:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:18,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:10:18,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:10:18,272 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:10:18,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-25 19:10:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:18,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:10:18,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:10:18,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:18,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:10:18,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787274133] [2021-11-25 19:10:18,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787274133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:18,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:10:18,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:10:18,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167988196] [2021-11-25 19:10:18,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:18,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:10:18,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:10:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:10:18,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:10:18,632 INFO L87 Difference]: Start difference. First operand 344 states and 405 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2021-11-25 19:10:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:19,015 INFO L93 Difference]: Finished difference Result 459 states and 511 transitions. [2021-11-25 19:10:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:10:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 50 [2021-11-25 19:10:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:19,017 INFO L225 Difference]: With dead ends: 459 [2021-11-25 19:10:19,017 INFO L226 Difference]: Without dead ends: 459 [2021-11-25 19:10:19,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:10:19,018 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1003 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:19,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 762 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:10:19,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-25 19:10:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 344. [2021-11-25 19:10:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 275 states have (on average 1.469090909090909) internal successors, (404), 343 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:10:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 404 transitions. [2021-11-25 19:10:19,024 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 404 transitions. Word has length 50 [2021-11-25 19:10:19,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:19,024 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 404 transitions. [2021-11-25 19:10:19,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2021-11-25 19:10:19,025 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 404 transitions. [2021-11-25 19:10:19,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:10:19,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:19,026 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:19,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-11-25 19:10:19,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:10:19,244 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-25 19:10:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -761049076, now seen corresponding path program 1 times [2021-11-25 19:10:19,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:10:19,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127816034] [2021-11-25 19:10:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:19,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:10:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:10:19,247 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:10:19,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929d010c-f105-40fe-80ec-65165d12aeee/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-25 19:10:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:19,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-25 19:10:19,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:19,785 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:10:19,786 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 13 treesize of output 22 [2021-11-25 19:10:19,998 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 19:10:19,998 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 35 treesize of output 52 [2021-11-25 19:10:20,400 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 [2021-11-25 19:10:20,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:20,647 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 52 treesize of output 43 [2021-11-25 19:10:21,246 INFO L354 Elim1Store]: treesize reduction 77, result has 36.9 percent of original size [2021-11-25 19:10:21,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 80 [2021-11-25 19:10:22,569 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 58 treesize of output 54 [2021-11-25 19:10:23,229 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 52 treesize of output 48 [2021-11-25 19:10:24,138 INFO L354 Elim1Store]: treesize reduction 100, result has 36.3 percent of original size [2021-11-25 19:10:24,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 71 treesize of output 112 [2021-11-25 19:10:27,405 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 65 treesize of output 59 [2021-11-25 19:10:29,047 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 68 treesize of output 51 [2021-11-25 19:10:31,027 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 [2021-11-25 19:10:34,802 INFO L354 Elim1Store]: treesize reduction 155, result has 35.4 percent of original size [2021-11-25 19:10:34,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 86 treesize of output 145 [2021-11-25 19:10:38,567 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 [2021-11-25 19:10:38,611 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:10:38,611 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 162 treesize of output 103 [2021-11-25 19:10:51,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:51,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:10:51,348 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:10:51,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 275 treesize of output 157 [2021-11-25 19:10:51,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:51,403 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 32 treesize of output 34