./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3b319f31812cf6dfaa3cae4a89a0875c72839a3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3b319f31812cf6dfaa3cae4a89a0875c72839a3 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:17:54,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:17:54,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:17:54,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:17:54,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:17:54,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:17:54,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:17:54,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:17:54,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:17:54,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:17:54,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:17:54,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:17:54,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:17:54,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:17:54,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:17:54,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:17:54,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:17:54,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:17:54,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:17:54,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:17:54,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:17:54,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:17:54,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:17:54,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:17:54,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:17:54,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:17:54,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:17:54,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:17:54,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:17:54,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:17:54,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:17:54,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:17:54,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:17:54,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:17:54,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:17:54,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:17:54,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:17:54,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:17:54,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:17:54,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:17:54,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:17:54,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:17:54,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:17:54,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:17:54,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:17:54,787 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:17:54,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:17:54,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:17:54,787 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:17:54,788 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:17:54,794 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:17:54,794 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:17:54,795 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:17:54,796 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:17:54,796 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:17:54,796 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:17:54,797 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:17:54,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:17:54,798 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:17:54,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:17:54,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:17:54,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:17:54,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:17:54,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:17:54,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:17:54,799 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:17:54,799 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:17:54,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:17:54,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:17:54,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:17:54,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:17:54,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:17:54,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:17:54,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:17:54,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:17:54,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:17:54,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:17:54,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:17:54,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:17:54,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:17:54,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:17:54,805 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_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3b319f31812cf6dfaa3cae4a89a0875c72839a3 [2021-10-16 02:17:55,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:17:55,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:17:55,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:17:55,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:17:55,126 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:17:55,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-regression/test22-1.c [2021-10-16 02:17:55,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data/a229084da/c2c6deeedb264f059b5e774ed655e736/FLAGd544dabde [2021-10-16 02:17:55,683 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:17:55,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/sv-benchmarks/c/ldv-regression/test22-1.c [2021-10-16 02:17:55,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data/a229084da/c2c6deeedb264f059b5e774ed655e736/FLAGd544dabde [2021-10-16 02:17:56,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data/a229084da/c2c6deeedb264f059b5e774ed655e736 [2021-10-16 02:17:56,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:17:56,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:17:56,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:17:56,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:17:56,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:17:56,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ac2441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56, skipping insertion in model container [2021-10-16 02:17:56,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:17:56,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:17:56,303 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2021-10-16 02:17:56,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:17:56,314 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:17:56,333 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2021-10-16 02:17:56,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:17:56,349 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:17:56,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56 WrapperNode [2021-10-16 02:17:56,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:17:56,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:17:56,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:17:56,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:17:56,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:17:56,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:17:56,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:17:56,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:17:56,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:17:56,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:17:56,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:17:56,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:17:56,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (1/1) ... [2021-10-16 02:17:56,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:17:56,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:17:56,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:17:56,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:17:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:17:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:17:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:17:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:17:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:17:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:17:57,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:17:57,133 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-16 02:17:57,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:17:57 BoogieIcfgContainer [2021-10-16 02:17:57,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:17:57,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:17:57,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:17:57,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:17:57,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:17:56" (1/3) ... [2021-10-16 02:17:57,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a772d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:17:57, skipping insertion in model container [2021-10-16 02:17:57,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:17:56" (2/3) ... [2021-10-16 02:17:57,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a772d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:17:57, skipping insertion in model container [2021-10-16 02:17:57,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:17:57" (3/3) ... [2021-10-16 02:17:57,159 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-1.c [2021-10-16 02:17:57,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:17:57,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:17:57,223 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:17:57,230 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:17:57,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:17:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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) [2021-10-16 02:17:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:17:57,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:17:57,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:17:57,280 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:17:57,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:17:57,293 INFO L82 PathProgramCache]: Analyzing trace with hash -820905233, now seen corresponding path program 1 times [2021-10-16 02:17:57,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:17:57,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771007541] [2021-10-16 02:17:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:17:57,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:17:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:17:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:17:57,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:17:57,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771007541] [2021-10-16 02:17:57,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771007541] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:17:57,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:17:57,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:17:57,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577290193] [2021-10-16 02:17:57,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:17:57,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:17:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:17:57,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:17:57,630 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-16 02:17:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:17:57,652 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-10-16 02:17:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:17:57,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2021-10-16 02:17:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:17:57,664 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:17:57,665 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 02:17:57,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:17:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 02:17:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 02:17:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:17:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-16 02:17:57,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-16 02:17:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:17:57,698 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-16 02:17:57,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-16 02:17:57,698 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-16 02:17:57,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:17:57,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:17:57,699 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:17:57,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:17:57,699 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:17:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:17:57,700 INFO L82 PathProgramCache]: Analyzing trace with hash 314487744, now seen corresponding path program 1 times [2021-10-16 02:17:57,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:17:57,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243524719] [2021-10-16 02:17:57,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:17:57,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:17:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:17:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:17:57,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:17:57,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243524719] [2021-10-16 02:17:57,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243524719] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:17:57,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:17:57,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:17:57,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147926115] [2021-10-16 02:17:57,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:17:57,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:17:57,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:17:57,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:17:57,924 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 5 states have (on average 1.4) 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) [2021-10-16 02:17:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:17:58,030 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-16 02:17:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:17:58,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) 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 [2021-10-16 02:17:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:17:58,043 INFO L225 Difference]: With dead ends: 14 [2021-10-16 02:17:58,043 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:17:58,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:17:58,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:17:58,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:17:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:17:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-16 02:17:58,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-16 02:17:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:17:58,048 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-16 02:17:58,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) 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) [2021-10-16 02:17:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-16 02:17:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:17:58,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:17:58,048 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:17:58,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:17:58,049 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:17:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:17:58,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1604245819, now seen corresponding path program 1 times [2021-10-16 02:17:58,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:17:58,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642819421] [2021-10-16 02:17:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:17:58,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:17:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:17:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:17:58,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:17:58,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642819421] [2021-10-16 02:17:58,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642819421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:17:58,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125974469] [2021-10-16 02:17:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:17:58,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:17:58,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:17:58,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:17:58,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:17:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:17:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 02:17:58,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:17:58,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:17:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:17:59,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:17:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:17:59,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125974469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:17:59,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [350254638] [2021-10-16 02:17:59,121 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 02:17:59,121 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:17:59,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:17:59,157 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:17:59,157 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:17:59,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,223 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-16 02:17:59,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-16 02:17:59,273 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,278 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-16 02:17:59,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-16 02:17:59,287 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,291 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-16 02:17:59,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-16 02:17:59,298 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,302 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-16 02:17:59,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-16 02:17:59,307 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,309 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-16 02:17:59,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-16 02:17:59,312 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,315 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-16 02:17:59,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-16 02:17:59,322 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-16 02:17:59,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:17:59,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:17:59,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-16 02:17:59,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 411 [2021-10-16 02:17:59,659 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:17:59,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:17:59,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:17:59,662 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:17:59,715 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:17:59,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:17:59,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:17:59,717 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:17:59,796 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:17:59,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:17:59,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:17:59,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:17:59,800 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:17:59,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:17:59,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:17:59,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:17:59,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:17:59,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:17:59,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:00,039 INFO L244 Elim1Store]: Index analysis took 176 ms [2021-10-16 02:18:00,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:00,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:00,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:00,113 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,171 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,173 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,213 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,216 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,257 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,259 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:00,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:00,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:00,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:00,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:00,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:00,598 INFO L244 Elim1Store]: Index analysis took 287 ms [2021-10-16 02:18:00,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:00,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:00,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:00,719 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,773 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,830 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,833 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,883 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,884 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,885 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,919 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,922 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,958 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:00,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:00,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:00,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:00,995 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,028 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,030 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,379 INFO L244 Elim1Store]: Index analysis took 306 ms [2021-10-16 02:18:01,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:01,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:01,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:01,498 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,541 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,572 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,574 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,605 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,607 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,655 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,686 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,691 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,721 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,724 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,753 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,790 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,817 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:01,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:01,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:01,822 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:01,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,016 INFO L244 Elim1Store]: Index analysis took 160 ms [2021-10-16 02:18:02,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:02,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:02,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:02,091 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:02,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,248 INFO L244 Elim1Store]: Index analysis took 124 ms [2021-10-16 02:18:02,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:02,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:02,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:02,307 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:02,336 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:02,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:02,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:02,339 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:02,368 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:02,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:02,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:02,370 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:02,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:02,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:02,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:02,399 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:02,439 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:02,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:02,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:02,442 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:02,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,607 INFO L244 Elim1Store]: Index analysis took 136 ms [2021-10-16 02:18:02,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:02,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:02,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:02,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:02,668 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:02,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:02,980 INFO L244 Elim1Store]: Index analysis took 270 ms [2021-10-16 02:18:03,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:03,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:03,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:03,095 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,126 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,128 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,175 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,177 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:03,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:03,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:03,348 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,374 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,376 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,401 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,403 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,429 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:03,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:03,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:03,605 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,630 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,635 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,659 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,661 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,708 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,711 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,740 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,764 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:03,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:03,767 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:03,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:03,918 INFO L244 Elim1Store]: Index analysis took 121 ms [2021-10-16 02:18:03,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:03,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:03,974 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:03,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:03,975 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,000 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:04,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,002 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,023 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:04,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,025 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,281 INFO L244 Elim1Store]: Index analysis took 224 ms [2021-10-16 02:18:04,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:04,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:04,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:04,376 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:04,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,401 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:04,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,428 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:04,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,456 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,479 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:04,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,481 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,502 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:04,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,503 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,523 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:18:04,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:18:04,526 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:04,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-10-16 02:18:04,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:04,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:04,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:18:04,632 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-10-16 02:18:04,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:18:04,968 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:05,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:18:05,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3669 [2021-10-16 02:18:05,120 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 12 xjuncts. [2021-10-16 02:18:05,121 INFO L247 ElimStorePlain]: Needed 57 recursive calls to eliminate 5 variables, input treesize:18953, output treesize:3669 [2021-10-16 02:18:05,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:05,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:18:05,340 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_24| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) 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:608) 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:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) 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) [2021-10-16 02:18:05,342 INFO L168 Benchmark]: Toolchain (without parser) took 9267.88 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 105.9 MB in the beginning and 98.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 106.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:05,342 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 44.2 MB in the beginning and 44.1 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:18:05,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.15 ms. Allocated memory is still 140.5 MB. Free memory was 105.9 MB in the beginning and 115.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:05,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.98 ms. Allocated memory is still 140.5 MB. Free memory was 115.6 MB in the beginning and 113.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:05,343 INFO L168 Benchmark]: Boogie Preprocessor took 28.69 ms. Allocated memory is still 140.5 MB. Free memory was 113.9 MB in the beginning and 112.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:05,344 INFO L168 Benchmark]: RCFGBuilder took 713.40 ms. Allocated memory is still 140.5 MB. Free memory was 112.7 MB in the beginning and 87.9 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:05,344 INFO L168 Benchmark]: TraceAbstraction took 8204.53 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 87.5 MB in the beginning and 98.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:18:05,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 44.2 MB in the beginning and 44.1 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.15 ms. Allocated memory is still 140.5 MB. Free memory was 105.9 MB in the beginning and 115.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.98 ms. Allocated memory is still 140.5 MB. Free memory was 115.6 MB in the beginning and 113.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.69 ms. Allocated memory is still 140.5 MB. Free memory was 113.9 MB in the beginning and 112.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 713.40 ms. Allocated memory is still 140.5 MB. Free memory was 112.7 MB in the beginning and 87.9 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8204.53 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 87.5 MB in the beginning and 98.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_24| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_24|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:18:05,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:18:07,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:18:07,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:18:07,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:18:07,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:18:07,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:18:07,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:18:07,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:18:07,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:18:07,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:18:07,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:18:07,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:18:07,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:18:07,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:18:07,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:18:07,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:18:07,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:18:07,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:18:07,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:18:07,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:18:07,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:18:07,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:18:07,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:18:07,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:18:07,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:18:07,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:18:07,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:18:07,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:18:07,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:18:07,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:18:07,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:18:07,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:18:08,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:18:08,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:18:08,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:18:08,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:18:08,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:18:08,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:18:08,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:18:08,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:18:08,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:18:08,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:18:08,061 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:18:08,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:18:08,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:18:08,064 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:18:08,064 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:18:08,064 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:18:08,064 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:18:08,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:18:08,065 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:18:08,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:18:08,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:18:08,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:18:08,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:18:08,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:18:08,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:18:08,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:18:08,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:18:08,069 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:18:08,069 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:18:08,069 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:18:08,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:18:08,070 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:18:08,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:18:08,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:18:08,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:18:08,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:18:08,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:18:08,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:18:08,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:18:08,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:18:08,072 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:18:08,072 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:18:08,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:18:08,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:18:08,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:18:08,074 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_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3b319f31812cf6dfaa3cae4a89a0875c72839a3 [2021-10-16 02:18:08,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:18:08,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:18:08,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:18:08,513 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:18:08,514 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:18:08,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-regression/test22-1.c [2021-10-16 02:18:08,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data/a4560dbd9/aeade3b5536647eb8b6ad710c4b62f67/FLAG1c57172bd [2021-10-16 02:18:09,089 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:18:09,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/sv-benchmarks/c/ldv-regression/test22-1.c [2021-10-16 02:18:09,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data/a4560dbd9/aeade3b5536647eb8b6ad710c4b62f67/FLAG1c57172bd [2021-10-16 02:18:09,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/data/a4560dbd9/aeade3b5536647eb8b6ad710c4b62f67 [2021-10-16 02:18:09,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:18:09,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:18:09,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:18:09,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:18:09,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:18:09,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ebdf50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09, skipping insertion in model container [2021-10-16 02:18:09,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:18:09,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:18:09,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2021-10-16 02:18:09,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:18:09,648 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:18:09,666 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2021-10-16 02:18:09,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:18:09,708 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:18:09,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09 WrapperNode [2021-10-16 02:18:09,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:18:09,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:18:09,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:18:09,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:18:09,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:18:09,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:18:09,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:18:09,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:18:09,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:18:09,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:18:09,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:18:09,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:18:09,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (1/1) ... [2021-10-16 02:18:09,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:18:09,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:18:09,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:18:09,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:18:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:18:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-16 02:18:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:18:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:18:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:18:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:18:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:18:10,346 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:18:10,346 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-16 02:18:10,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:18:10 BoogieIcfgContainer [2021-10-16 02:18:10,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:18:10,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:18:10,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:18:10,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:18:10,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:18:09" (1/3) ... [2021-10-16 02:18:10,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125a6fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:18:10, skipping insertion in model container [2021-10-16 02:18:10,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:18:09" (2/3) ... [2021-10-16 02:18:10,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125a6fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:18:10, skipping insertion in model container [2021-10-16 02:18:10,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:18:10" (3/3) ... [2021-10-16 02:18:10,357 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-1.c [2021-10-16 02:18:10,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:18:10,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:18:10,413 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:18:10,420 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:18:10,421 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:18:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 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) [2021-10-16 02:18:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:18:10,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:10,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:18:10,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:10,448 INFO L82 PathProgramCache]: Analyzing trace with hash 164664103, now seen corresponding path program 1 times [2021-10-16 02:18:10,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:18:10,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365992718] [2021-10-16 02:18:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:10,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:18:10,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:18:10,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:18:10,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:18:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:10,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:18:10,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:10,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:10,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:18:10,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365992718] [2021-10-16 02:18:10,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365992718] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:18:10,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:18:10,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:18:10,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877565003] [2021-10-16 02:18:10,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:18:10,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:18:10,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:18:10,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:18:10,867 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 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) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2021-10-16 02:18:10,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:18:10,881 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-10-16 02:18:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:18:10,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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 [2021-10-16 02:18:10,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:18:10,892 INFO L225 Difference]: With dead ends: 34 [2021-10-16 02:18:10,892 INFO L226 Difference]: Without dead ends: 21 [2021-10-16 02:18:10,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:18:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-16 02:18:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-16 02:18:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2021-10-16 02:18:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-16 02:18:10,934 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2021-10-16 02:18:10,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:18:10,934 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-16 02:18:10,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2021-10-16 02:18:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-16 02:18:10,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:18:10,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:10,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:18:10,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:11,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:18:11,153 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash 603612068, now seen corresponding path program 1 times [2021-10-16 02:18:11,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:18:11,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322002785] [2021-10-16 02:18:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:11,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:18:11,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:18:11,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:18:11,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:18:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:11,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:18:11,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:11,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:12,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:12,278 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:18:12,278 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 22 treesize of output 17 [2021-10-16 02:18:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:12,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:18:12,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322002785] [2021-10-16 02:18:12,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322002785] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:18:12,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:18:12,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 14 [2021-10-16 02:18:12,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670507729] [2021-10-16 02:18:12,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:18:12,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:18:12,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:18:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:18:12,424 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2021-10-16 02:18:15,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:18:15,586 INFO L93 Difference]: Finished difference Result 142 states and 161 transitions. [2021-10-16 02:18:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-16 02:18:15,587 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 20 [2021-10-16 02:18:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:18:15,590 INFO L225 Difference]: With dead ends: 142 [2021-10-16 02:18:15,590 INFO L226 Difference]: Without dead ends: 137 [2021-10-16 02:18:15,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2868.5ms TimeCoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2021-10-16 02:18:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-16 02:18:15,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 36. [2021-10-16 02:18:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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) [2021-10-16 02:18:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-10-16 02:18:15,604 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 20 [2021-10-16 02:18:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:18:15,605 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-10-16 02:18:15,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2021-10-16 02:18:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-10-16 02:18:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:18:15,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:15,607 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:18:15,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:15,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:18:15,819 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:15,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:15,820 INFO L82 PathProgramCache]: Analyzing trace with hash -407505182, now seen corresponding path program 1 times [2021-10-16 02:18:15,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:18:15,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073899323] [2021-10-16 02:18:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:15,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:18:15,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:18:15,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:18:15,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:18:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:15,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:18:15,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:15,995 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 157 treesize of output 155 [2021-10-16 02:18:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:16,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:16,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:18:16,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073899323] [2021-10-16 02:18:16,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073899323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:18:16,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:18:16,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-10-16 02:18:16,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122811849] [2021-10-16 02:18:16,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:18:16,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:18:16,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:18:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:18:16,325 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:18:16,944 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2021-10-16 02:18:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:18:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-16 02:18:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:18:16,946 INFO L225 Difference]: With dead ends: 95 [2021-10-16 02:18:16,946 INFO L226 Difference]: Without dead ends: 70 [2021-10-16 02:18:16,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 405.5ms TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2021-10-16 02:18:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-16 02:18:16,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 35. [2021-10-16 02:18:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 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) [2021-10-16 02:18:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-16 02:18:16,955 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 20 [2021-10-16 02:18:16,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:18:16,956 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-16 02:18:16,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:16,956 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-16 02:18:16,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:18:16,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:16,957 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:18:16,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:17,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:18:17,173 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:17,173 INFO L82 PathProgramCache]: Analyzing trace with hash -984735834, now seen corresponding path program 1 times [2021-10-16 02:18:17,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:18:17,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773740279] [2021-10-16 02:18:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:17,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:18:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:18:17,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:18:17,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:18:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:17,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:18:17,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:17,331 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 334 treesize of output 326 [2021-10-16 02:18:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:17,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:17,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:18:17,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773740279] [2021-10-16 02:18:17,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773740279] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:18:17,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:18:17,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-10-16 02:18:17,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102221828] [2021-10-16 02:18:17,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:18:17,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:18:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:18:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:18:17,661 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:18:18,198 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2021-10-16 02:18:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 02:18:18,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-16 02:18:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:18:18,200 INFO L225 Difference]: With dead ends: 85 [2021-10-16 02:18:18,201 INFO L226 Difference]: Without dead ends: 68 [2021-10-16 02:18:18,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 306.7ms TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-10-16 02:18:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-16 02:18:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 35. [2021-10-16 02:18:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 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) [2021-10-16 02:18:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-10-16 02:18:18,209 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 20 [2021-10-16 02:18:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:18:18,210 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-10-16 02:18:18,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:18,210 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-10-16 02:18:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:18:18,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:18,211 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:18:18,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:18,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:18:18,426 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1995853084, now seen corresponding path program 1 times [2021-10-16 02:18:18,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:18:18,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228606100] [2021-10-16 02:18:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:18,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:18:18,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:18:18,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:18:18,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:18:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:18,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:18:18,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:18,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:18,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:19,118 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:18:19,118 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 22 treesize of output 17 [2021-10-16 02:18:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:19,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:18:19,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228606100] [2021-10-16 02:18:19,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228606100] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:18:19,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:18:19,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 14 [2021-10-16 02:18:19,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562873118] [2021-10-16 02:18:19,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:18:19,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:18:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:18:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:18:19,204 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2021-10-16 02:18:21,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:18:21,064 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2021-10-16 02:18:21,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-16 02:18:21,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 20 [2021-10-16 02:18:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:18:21,072 INFO L225 Difference]: With dead ends: 81 [2021-10-16 02:18:21,072 INFO L226 Difference]: Without dead ends: 76 [2021-10-16 02:18:21,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1560.9ms TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2021-10-16 02:18:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-16 02:18:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 28. [2021-10-16 02:18:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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) [2021-10-16 02:18:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-16 02:18:21,080 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2021-10-16 02:18:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:18:21,080 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-16 02:18:21,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2021-10-16 02:18:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-16 02:18:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:18:21,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:21,082 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:18:21,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:21,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:18:21,294 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:21,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:21,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1048225454, now seen corresponding path program 1 times [2021-10-16 02:18:21,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:18:21,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199089258] [2021-10-16 02:18:21,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:21,295 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:18:21,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:18:21,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:18:21,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:18:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:21,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-16 02:18:21,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:21,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:21,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:22,548 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:18:22,549 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 36 treesize of output 23 [2021-10-16 02:18:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:22,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:18:22,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199089258] [2021-10-16 02:18:22,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199089258] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:18:22,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [989020155] [2021-10-16 02:18:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:22,638 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:18:22,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:18:22,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:18:22,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:18:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:22,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-16 02:18:22,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:24,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:24,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:24,242 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:18:24,242 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 36 treesize of output 23 [2021-10-16 02:18:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:24,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [989020155] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:18:24,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258380449] [2021-10-16 02:18:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:24,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:18:24,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:18:24,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:18:24,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:18:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:24,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-16 02:18:24,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:24,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:24,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:25,011 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:18:25,012 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 36 treesize of output 23 [2021-10-16 02:18:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:25,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258380449] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:18:25,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:18:25,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 32 [2021-10-16 02:18:25,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53466970] [2021-10-16 02:18:25,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-16 02:18:25,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:18:25,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-16 02:18:25,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2021-10-16 02:18:25,101 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:32,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:18:32,452 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2021-10-16 02:18:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-16 02:18:32,453 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 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 [2021-10-16 02:18:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:18:32,454 INFO L225 Difference]: With dead ends: 101 [2021-10-16 02:18:32,455 INFO L226 Difference]: Without dead ends: 96 [2021-10-16 02:18:32,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 7603.1ms TimeCoverageRelationStatistics Valid=1033, Invalid=4517, Unknown=0, NotChecked=0, Total=5550 [2021-10-16 02:18:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-16 02:18:32,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 43. [2021-10-16 02:18:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-10-16 02:18:32,473 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 24 [2021-10-16 02:18:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:18:32,476 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-10-16 02:18:32,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-10-16 02:18:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:18:32,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:32,478 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:18:32,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:32,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:32,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-10-16 02:18:33,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:18:33,091 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:33,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1209026451, now seen corresponding path program 1 times [2021-10-16 02:18:33,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:18:33,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652468800] [2021-10-16 02:18:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:33,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:18:33,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:18:33,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:18:33,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:18:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:33,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-16 02:18:33,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:33,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:33,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:34,712 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:18:34,713 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 36 treesize of output 23 [2021-10-16 02:18:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:34,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:18:34,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652468800] [2021-10-16 02:18:34,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652468800] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:18:34,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [111982187] [2021-10-16 02:18:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:34,811 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:18:34,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:18:34,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:18:34,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:18:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:35,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-16 02:18:35,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:18:35,344 INFO L354 Elim1Store]: treesize reduction 135, result has 27.4 percent of original size [2021-10-16 02:18:35,345 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 2 case distinctions, treesize of input 42 treesize of output 67 [2021-10-16 02:18:36,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:36,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:37,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [111982187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:18:37,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191044417] [2021-10-16 02:18:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:18:37,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:18:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:18:37,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:18:37,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:18:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:18:38,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-16 02:18:38,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:38,978 INFO L354 Elim1Store]: treesize reduction 155, result has 27.2 percent of original size [2021-10-16 02:18:38,979 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 3 case distinctions, treesize of input 42 treesize of output 67 [2021-10-16 02:18:39,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:39,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:39,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191044417] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:18:39,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:18:39,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 15, 15, 15] total 41 [2021-10-16 02:18:39,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375184504] [2021-10-16 02:18:39,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-16 02:18:39,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:18:39,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-16 02:18:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2021-10-16 02:18:39,627 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:18:54,281 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2021-10-16 02:18:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-16 02:18:54,282 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 0 states have call successors, (0), 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 [2021-10-16 02:18:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:18:54,284 INFO L225 Difference]: With dead ends: 121 [2021-10-16 02:18:54,284 INFO L226 Difference]: Without dead ends: 116 [2021-10-16 02:18:54,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 14632.0ms TimeCoverageRelationStatistics Valid=1689, Invalid=7623, Unknown=0, NotChecked=0, Total=9312 [2021-10-16 02:18:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-16 02:18:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 47. [2021-10-16 02:18:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 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) [2021-10-16 02:18:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2021-10-16 02:18:54,299 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 26 [2021-10-16 02:18:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:18:54,300 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2021-10-16 02:18:54,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:18:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2021-10-16 02:18:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:18:54,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:18:54,301 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:18:54,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:54,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:54,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:18:54,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:18:54,916 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:18:54,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:18:54,917 INFO L82 PathProgramCache]: Analyzing trace with hash 401075650, now seen corresponding path program 2 times [2021-10-16 02:18:54,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:18:54,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193652934] [2021-10-16 02:18:54,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:18:54,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:18:54,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:18:54,919 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:18:54,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:18:55,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:18:55,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:18:55,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-16 02:18:55,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:18:56,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:18:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:56,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:18:57,944 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:18:57,944 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 36 treesize of output 23 [2021-10-16 02:18:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:18:58,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:18:58,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193652934] [2021-10-16 02:18:58,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193652934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:18:58,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [340229392] [2021-10-16 02:18:58,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:18:58,032 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:18:58,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:18:58,038 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:18:58,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 02:18:58,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:18:58,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:18:58,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-16 02:18:58,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:00,307 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:00,307 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 24 treesize of output 15 [2021-10-16 02:19:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:00,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:00,740 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:19:00,740 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 36 treesize of output 23 [2021-10-16 02:19:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:00,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [340229392] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:00,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142908295] [2021-10-16 02:19:00,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:19:00,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:00,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:00,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:19:00,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 02:19:01,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:19:01,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:19:01,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-16 02:19:01,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:01,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:19:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:01,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:01,853 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:19:01,853 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 36 treesize of output 23 [2021-10-16 02:19:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:01,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142908295] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:01,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:19:01,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 45 [2021-10-16 02:19:01,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317240978] [2021-10-16 02:19:01,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-16 02:19:01,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-16 02:19:01,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1740, Unknown=0, NotChecked=0, Total=1980 [2021-10-16 02:19:01,942 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:31,028 INFO L93 Difference]: Finished difference Result 163 states and 179 transitions. [2021-10-16 02:19:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-16 02:19:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-16 02:19:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:31,030 INFO L225 Difference]: With dead ends: 163 [2021-10-16 02:19:31,031 INFO L226 Difference]: Without dead ends: 158 [2021-10-16 02:19:31,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4942 ImplicationChecksByTransitivity, 30250.7ms TimeCoverageRelationStatistics Valid=2754, Invalid=13502, Unknown=0, NotChecked=0, Total=16256 [2021-10-16 02:19:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-16 02:19:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 69. [2021-10-16 02:19:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-10-16 02:19:31,058 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 32 [2021-10-16 02:19:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:31,058 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-10-16 02:19:31,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-10-16 02:19:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-16 02:19:31,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:31,060 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:31,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:31,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:31,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:31,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:31,666 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:31,667 INFO L82 PathProgramCache]: Analyzing trace with hash 188924172, now seen corresponding path program 2 times [2021-10-16 02:19:31,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:31,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440217069] [2021-10-16 02:19:31,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:19:31,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:31,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:31,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:31,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:19:32,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:19:32,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:19:32,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-16 02:19:32,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:33,057 INFO L354 Elim1Store]: treesize reduction 155, result has 27.2 percent of original size [2021-10-16 02:19:33,057 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 3 case distinctions, treesize of input 42 treesize of output 67 [2021-10-16 02:19:34,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:19:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:34,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:38,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:38,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440217069] [2021-10-16 02:19:38,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440217069] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:38,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1937217156] [2021-10-16 02:19:38,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:19:38,410 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:19:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:19:38,412 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:19:38,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 02:19:39,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:19:39,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:19:39,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:19:39,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:39,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:39,289 INFO L354 Elim1Store]: treesize reduction 135, result has 27.4 percent of original size [2021-10-16 02:19:39,290 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 2 case distinctions, treesize of input 42 treesize of output 67 [2021-10-16 02:19:42,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:19:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:42,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:44,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1937217156] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:44,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532915326] [2021-10-16 02:19:44,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:19:44,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:44,895 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:19:44,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-16 02:19:45,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:19:45,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:19:45,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-16 02:19:45,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:46,667 INFO L354 Elim1Store]: treesize reduction 155, result has 27.2 percent of original size [2021-10-16 02:19:46,667 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 3 case distinctions, treesize of input 42 treesize of output 67 [2021-10-16 02:19:50,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 02:19:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:50,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:50,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532915326] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:50,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:19:50,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20, 20, 20, 20] total 76 [2021-10-16 02:19:50,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522367672] [2021-10-16 02:19:50,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-16 02:19:50,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-16 02:19:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=4969, Unknown=0, NotChecked=0, Total=5700 [2021-10-16 02:19:50,992 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 76 states, 76 states have (on average 1.7105263157894737) internal successors, (130), 76 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:39,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:39,390 INFO L93 Difference]: Finished difference Result 203 states and 225 transitions. [2021-10-16 02:20:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-16 02:20:39,391 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.7105263157894737) internal successors, (130), 76 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-16 02:20:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:39,392 INFO L225 Difference]: With dead ends: 203 [2021-10-16 02:20:39,392 INFO L226 Difference]: Without dead ends: 198 [2021-10-16 02:20:39,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10113 ImplicationChecksByTransitivity, 54496.7ms TimeCoverageRelationStatistics Valid=5250, Invalid=27692, Unknown=0, NotChecked=0, Total=32942 [2021-10-16 02:20:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-16 02:20:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 89. [2021-10-16 02:20:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 88 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2021-10-16 02:20:39,422 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 36 [2021-10-16 02:20:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:39,422 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2021-10-16 02:20:39,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.7105263157894737) internal successors, (130), 76 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2021-10-16 02:20:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 02:20:39,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:39,424 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:39,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:39,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:39,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:40,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:20:40,035 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:40,036 INFO L82 PathProgramCache]: Analyzing trace with hash -998842154, now seen corresponding path program 3 times [2021-10-16 02:20:40,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:40,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053928617] [2021-10-16 02:20:40,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:20:40,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:40,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:40,038 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:40,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 02:20:40,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:20:40,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:20:40,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-16 02:20:40,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:41,206 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 49 treesize of output 29 [2021-10-16 02:20:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-16 02:20:41,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:42,759 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:20:42,759 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 35 treesize of output 26 [2021-10-16 02:20:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-16 02:20:42,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:42,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053928617] [2021-10-16 02:20:42,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053928617] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:42,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1602116409] [2021-10-16 02:20:42,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:20:42,823 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:20:42,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:20:42,825 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:20:42,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-16 02:20:43,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:20:43,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:20:43,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-16 02:20:43,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:44,897 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 49 treesize of output 29 [2021-10-16 02:20:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-16 02:20:44,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:45,726 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:20:45,727 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 35 treesize of output 26 [2021-10-16 02:20:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-16 02:20:45,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1602116409] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:45,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248657023] [2021-10-16 02:20:45,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:20:45,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:20:45,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:20:45,799 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:20:45,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-16 02:20:46,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:20:46,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:20:46,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:20:46,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:46,952 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 49 treesize of output 29 [2021-10-16 02:20:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-16 02:20:46,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:47,666 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 02:20:47,667 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 35 treesize of output 26 [2021-10-16 02:20:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-16 02:20:47,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248657023] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:47,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:20:47,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16, 16, 16, 16] total 37 [2021-10-16 02:20:47,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18154449] [2021-10-16 02:20:47,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-16 02:20:47,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-16 02:20:47,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1211, Unknown=0, NotChecked=0, Total=1332 [2021-10-16 02:20:47,749 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:04,345 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2021-10-16 02:21:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-16 02:21:04,345 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2021-10-16 02:21:04,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:04,345 INFO L225 Difference]: With dead ends: 182 [2021-10-16 02:21:04,345 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:21:04,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 17154.0ms TimeCoverageRelationStatistics Valid=737, Invalid=4091, Unknown=2, NotChecked=0, Total=4830 [2021-10-16 02:21:04,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:21:04,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:21:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:21:04,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-10-16 02:21:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:04,348 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:21:04,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:04,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:21:04,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:21:04,351 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:21:04,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:21:04,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:21:04,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-10-16 02:21:04,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:21:04,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:21:04,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:07,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:07,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:07,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:07,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:07,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:07,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:22:35,611 WARN L207 SmtUtils]: Spent 1.46 m on a formula simplification. DAG size of input: 481 DAG size of output: 63 [2021-10-16 02:22:43,973 WARN L207 SmtUtils]: Spent 7.56 s on a formula simplification. DAG size of input: 154 DAG size of output: 64 [2021-10-16 02:22:44,078 INFO L853 garLoopResultBuilder]: At program point L44(lines 33 52) the Hoare annotation is: false [2021-10-16 02:22:44,078 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2021-10-16 02:22:44,078 INFO L853 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset))) (let ((.cse0 (not (bvsgt .cse1 (_ bv0 32)))) (.cse2 (select (select |#memory_int| ULTIMATE.start_main_~pd1~0.base) ULTIMATE.start_main_~pd1~0.offset))) (and (or .cse0 (not (bvslt (bvadd .cse1 (_ bv4294967288 32)) .cse2)) (bvslt (bvadd .cse1 (_ bv4294967289 32)) .cse2)) (not (= |~#d2~0.base| |~#d1~0.base|)) (or (= .cse1 ULTIMATE.start_main_~i~0) (bvslt ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset))) (or .cse0 (not (bvslt (bvadd .cse1 (_ bv4294967293 32)) .cse2)) (bvslt (bvadd .cse1 (_ bv4294967294 32)) .cse2)) (forall ((ULTIMATE.start_main_~i~0 (_ BitVec 32))) (let ((.cse3 (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse4 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset))) (or (= .cse3 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset)) (not (bvslt ULTIMATE.start_main_~i~0 .cse4)) (bvslt .cse3 .cse4)))) (= |~#d2~0.offset| (_ bv0 32)) (= |~#d1~0.offset| (_ bv0 32)) (or (not |ULTIMATE.start_main_#t~short19|) (forall ((ULTIMATE.start_main_~i~0 (_ BitVec 32))) (let ((.cse5 (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse6 (select (select |#memory_int| ULTIMATE.start_main_~pd1~0.base) ULTIMATE.start_main_~pd1~0.offset))) (or (= .cse5 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset)) (bvslt .cse5 .cse6) (not (bvslt ULTIMATE.start_main_~i~0 .cse6))))))))) [2021-10-16 02:22:44,078 INFO L857 garLoopResultBuilder]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2021-10-16 02:22:44,078 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:22:44,078 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:22:44,079 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:22:44,079 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-16 02:22:44,079 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2021-10-16 02:22:44,079 INFO L857 garLoopResultBuilder]: For program point L24-2(line 24) no Hoare annotation was computed. [2021-10-16 02:22:44,079 INFO L853 garLoopResultBuilder]: At program point L24-3(lines 22 25) the Hoare annotation is: (let ((.cse3 (= |~#d2~0.base| |ULTIMATE.start_get_dummy_#res.base|)) (.cse2 (= |ULTIMATE.start_get_dummy_#res.base| |~#d1~0.base|)) (.cse0 (= |~#d2~0.offset| (_ bv0 32))) (.cse1 (= |~#d1~0.offset| (_ bv0 32)))) (or (and (= |ULTIMATE.start_get_dummy_#res.offset| |~#d2~0.offset|) .cse0 .cse1 (not .cse2) .cse3) (and (not .cse3) .cse2 .cse0 .cse1 (= |ULTIMATE.start_get_dummy_#res.offset| |~#d1~0.offset|)))) [2021-10-16 02:22:44,079 INFO L857 garLoopResultBuilder]: For program point L24-4(line 24) no Hoare annotation was computed. [2021-10-16 02:22:44,080 INFO L857 garLoopResultBuilder]: For program point L24-6(line 24) no Hoare annotation was computed. [2021-10-16 02:22:44,080 INFO L853 garLoopResultBuilder]: At program point L24-7(lines 22 25) the Hoare annotation is: (or (and (= |~#d2~0.offset| (_ bv0 32)) (= |~#d1~0.offset| (_ bv0 32)) (or (and (= |ULTIMATE.start_get_dummy_#res.offset| |~#d1~0.offset|) (= ULTIMATE.start_main_~pd1~0.base |~#d1~0.base|) (= ULTIMATE.start_main_~pd1~0.offset |~#d1~0.offset|) (not (= |~#d2~0.base| ULTIMATE.start_main_~pd1~0.base))) (and (= |ULTIMATE.start_get_dummy_#res.offset| |~#d2~0.offset|) (not (= |ULTIMATE.start_get_dummy_#res.base| |~#d1~0.base|)) (= |~#d2~0.base| |ULTIMATE.start_get_dummy_#res.base|) (= ULTIMATE.start_main_~pd1~0.offset |~#d2~0.offset|)))) (and (not (= |~#d2~0.base| |~#d1~0.base|)) (not (= ULTIMATE.start_main_~pd1~0.base |ULTIMATE.start_get_dummy_#res.base|)))) [2021-10-16 02:22:44,080 INFO L857 garLoopResultBuilder]: For program point L24-8(line 24) no Hoare annotation was computed. [2021-10-16 02:22:44,080 INFO L857 garLoopResultBuilder]: For program point L24-10(line 24) no Hoare annotation was computed. [2021-10-16 02:22:44,080 INFO L853 garLoopResultBuilder]: At program point L24-11(lines 22 25) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pd1~0.base)) (.cse4 (= ULTIMATE.start_main_~pd1~0.base |~#d1~0.base|)) (.cse1 (= |~#d2~0.base| ULTIMATE.start_main_~pd1~0.base))) (let ((.cse2 (= ULTIMATE.start_main_~pd2~0.offset (_ bv0 32))) (.cse3 (let ((.cse5 (= ULTIMATE.start_main_~pd1~0.offset ULTIMATE.start_main_~pd2~0.offset))) (or (and .cse0 .cse1 .cse5 (= ULTIMATE.start_main_~pd1~0.offset |~#d2~0.offset|) (not .cse4)) (and .cse0 .cse5 .cse4 (= ULTIMATE.start_main_~pd1~0.offset |~#d1~0.offset|) (not .cse1)))))) (or (and (not (= |~#d2~0.base| |~#d1~0.base|)) (not .cse0)) (and .cse1 (= |~#d1~0.offset| (_ bv0 32)) .cse2 .cse3) (and (= |~#d2~0.offset| (_ bv0 32)) .cse4 .cse2 .cse3)))) [2021-10-16 02:22:44,081 INFO L857 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-10-16 02:22:44,081 INFO L857 garLoopResultBuilder]: For program point L37-2(lines 37 46) no Hoare annotation was computed. [2021-10-16 02:22:44,081 INFO L857 garLoopResultBuilder]: For program point L37-4(lines 37 46) no Hoare annotation was computed. [2021-10-16 02:22:44,081 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:22:44,081 INFO L853 garLoopResultBuilder]: At program point L29(lines 27 30) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset))) (let ((.cse0 (not (bvsgt .cse1 (_ bv0 32)))) (.cse2 (select (select |#memory_int| ULTIMATE.start_main_~pd1~0.base) ULTIMATE.start_main_~pd1~0.offset))) (and (or .cse0 (not (bvslt (bvadd .cse1 (_ bv4294967288 32)) .cse2)) (bvslt (bvadd .cse1 (_ bv4294967289 32)) .cse2)) (not (= |~#d2~0.base| |~#d1~0.base|)) (or .cse0 (not (bvslt (bvadd .cse1 (_ bv4294967293 32)) .cse2)) (bvslt (bvadd .cse1 (_ bv4294967294 32)) .cse2)) (forall ((ULTIMATE.start_main_~i~0 (_ BitVec 32))) (let ((.cse3 (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse4 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset))) (or (= .cse3 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset)) (not (bvslt ULTIMATE.start_main_~i~0 .cse4)) (bvslt .cse3 .cse4)))) (= |ULTIMATE.start_check_#res| (_ bv1 32)) (= .cse1 ULTIMATE.start_main_~i~0) (= |~#d2~0.offset| (_ bv0 32)) (= |~#d1~0.offset| (_ bv0 32)) (or (not |ULTIMATE.start_main_#t~short19|) (forall ((ULTIMATE.start_main_~i~0 (_ BitVec 32))) (let ((.cse5 (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse6 (select (select |#memory_int| ULTIMATE.start_main_~pd1~0.base) ULTIMATE.start_main_~pd1~0.offset))) (or (= .cse5 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset)) (bvslt .cse5 .cse6) (not (bvslt ULTIMATE.start_main_~i~0 .cse6))))))))) [2021-10-16 02:22:44,082 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 20) no Hoare annotation was computed. [2021-10-16 02:22:44,082 INFO L860 garLoopResultBuilder]: At program point L51(lines 32 52) the Hoare annotation is: true [2021-10-16 02:22:44,082 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2021-10-16 02:22:44,086 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:22:44,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,093 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,093 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,094 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,094 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,094 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,104 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,104 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,104 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,105 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,105 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,105 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,115 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,115 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,116 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,116 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,116 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,116 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,120 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,120 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,120 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:22:44 BoogieIcfgContainer [2021-10-16 02:22:44,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:22:44,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:22:44,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:22:44,124 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:22:44,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:18:10" (3/4) ... [2021-10-16 02:22:44,128 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:22:44,138 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:22:44,138 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-16 02:22:44,139 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:22:44,139 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:22:44,162 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\result == d2 && d2 == 0bv32) && d1 == 0bv32) && !(\result == d1)) && d2 == \result) || ((((!(d2 == \result) && \result == d1) && d2 == 0bv32) && d1 == 0bv32) && \result == d1) [2021-10-16 02:22:44,163 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((d2 == 0bv32 && d1 == 0bv32) && ((((\result == d1 && pd1 == d1) && pd1 == d1) && !(d2 == pd1)) || (((\result == d2 && !(\result == d1)) && d2 == \result) && pd1 == d2))) || (!(d2 == d1) && !(pd1 == \result)) [2021-10-16 02:22:44,164 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!~bvsgt32(unknown-#memory_int-unknown[pd2][pd2], 0bv32) || !~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967288bv32), unknown-#memory_int-unknown[pd1][pd1])) || ~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967289bv32), unknown-#memory_int-unknown[pd1][pd1])) && !(d2 == d1)) && ((!~bvsgt32(unknown-#memory_int-unknown[pd2][pd2], 0bv32) || !~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967293bv32), unknown-#memory_int-unknown[pd1][pd1])) || ~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967294bv32), unknown-#memory_int-unknown[pd1][pd1]))) && (forall ULTIMATE.start_main_~i~0 : bv32 :: (~bvadd64(ULTIMATE.start_main_~i~0, 1bv32) == unknown-#memory_int-unknown[pd2][pd2] || !~bvslt32(ULTIMATE.start_main_~i~0, unknown-#memory_int-unknown[pa][pa])) || ~bvslt32(~bvadd64(ULTIMATE.start_main_~i~0, 1bv32), unknown-#memory_int-unknown[pa][pa]))) && \result == 1bv32) && unknown-#memory_int-unknown[pd2][pd2] == i) && d2 == 0bv32) && d1 == 0bv32) && (!aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux || (forall ULTIMATE.start_main_~i~0 : bv32 :: (~bvadd64(ULTIMATE.start_main_~i~0, 1bv32) == unknown-#memory_int-unknown[pd2][pd2] || ~bvslt32(~bvadd64(ULTIMATE.start_main_~i~0, 1bv32), unknown-#memory_int-unknown[pd1][pd1])) || !~bvslt32(ULTIMATE.start_main_~i~0, unknown-#memory_int-unknown[pd1][pd1]))) [2021-10-16 02:22:44,179 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:22:44,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:22:44,180 INFO L168 Benchmark]: Toolchain (without parser) took 274748.35 ms. Allocated memory was 69.2 MB in the beginning and 272.6 MB in the end (delta: 203.4 MB). Free memory was 48.8 MB in the beginning and 82.9 MB in the end (delta: -34.1 MB). Peak memory consumption was 168.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:44,181 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:22:44,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.27 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 52.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:44,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.49 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 50.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:44,182 INFO L168 Benchmark]: Boogie Preprocessor took 60.33 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 49.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:22:44,182 INFO L168 Benchmark]: RCFGBuilder took 508.00 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 37.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:44,183 INFO L168 Benchmark]: TraceAbstraction took 273773.23 ms. Allocated memory was 69.2 MB in the beginning and 272.6 MB in the end (delta: 203.4 MB). Free memory was 36.6 MB in the beginning and 87.1 MB in the end (delta: -50.5 MB). Peak memory consumption was 182.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:44,183 INFO L168 Benchmark]: Witness Printer took 55.69 ms. Allocated memory is still 272.6 MB. Free memory was 87.1 MB in the beginning and 82.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:44,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.27 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 52.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.49 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 50.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.33 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 49.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 508.00 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 37.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 273773.23 ms. Allocated memory was 69.2 MB in the beginning and 272.6 MB in the end (delta: 203.4 MB). Free memory was 36.6 MB in the beginning and 87.1 MB in the end (delta: -50.5 MB). Peak memory consumption was 182.1 MB. Max. memory is 16.1 GB. * Witness Printer took 55.69 ms. Allocated memory is still 272.6 MB. Free memory was 87.1 MB in the beginning and 82.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 273674.9ms, OverallIterations: 10, TraceHistogramMax: 11, EmptinessCheckTime: 19.6ms, AutomataDifference: 122355.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 99122.8ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 232 SDtfs, 1589 SDslu, 2138 SDs, 0 SdLazy, 5788 SolverSat, 925 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13962.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1504 GetRequests, 843 SyntacticMatches, 2 SemanticMatches, 659 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20592 ImplicationChecksByTransitivity, 129278.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=9, InterpolantAutomatonStates: 447, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 129.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 537 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 91 NumberOfFragments, 492 HoareAnnotationTreeSize, 7 FomulaSimplifications, 9426009 FormulaSimplificationTreeSizeReduction, 3003.0ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 882794 FormulaSimplificationTreeSizeReductionInter, 96109.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 279.7ms SsaConstructionTime, 1765.8ms SatisfiabilityAnalysisTime, 40354.1ms InterpolantComputationTime, 573 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1106 ConstructedInterpolants, 63 QuantifiedInterpolants, 13193 SizeOfPredicates, 247 NumberOfNonLiveVariables, 1728 ConjunctsInSsa, 499 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 543/1452 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant [2021-10-16 02:22:44,194 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,195 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,195 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,195 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,195 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,195 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,198 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,198 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,198 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,198 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,198 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,199 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] Derived loop invariant: ((((((((!~bvsgt32(unknown-#memory_int-unknown[pd2][pd2], 0bv32) || !~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967288bv32), unknown-#memory_int-unknown[pd1][pd1])) || ~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967289bv32), unknown-#memory_int-unknown[pd1][pd1])) && !(d2 == d1)) && (unknown-#memory_int-unknown[pd2][pd2] == i || ~bvslt32(i, unknown-#memory_int-unknown[pa][pa]))) && ((!~bvsgt32(unknown-#memory_int-unknown[pd2][pd2], 0bv32) || !~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967293bv32), unknown-#memory_int-unknown[pd1][pd1])) || ~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967294bv32), unknown-#memory_int-unknown[pd1][pd1]))) && (forall ULTIMATE.start_main_~i~0 : bv32 :: (~bvadd64(ULTIMATE.start_main_~i~0, 1bv32) == unknown-#memory_int-unknown[pd2][pd2] || !~bvslt32(ULTIMATE.start_main_~i~0, unknown-#memory_int-unknown[pa][pa])) || ~bvslt32(~bvadd64(ULTIMATE.start_main_~i~0, 1bv32), unknown-#memory_int-unknown[pa][pa]))) && d2 == 0bv32) && d1 == 0bv32) && (!aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux || (forall ULTIMATE.start_main_~i~0 : bv32 :: (~bvadd64(ULTIMATE.start_main_~i~0, 1bv32) == unknown-#memory_int-unknown[pd2][pd2] || ~bvslt32(~bvadd64(ULTIMATE.start_main_~i~0, 1bv32), unknown-#memory_int-unknown[pd1][pd1])) || !~bvslt32(ULTIMATE.start_main_~i~0, unknown-#memory_int-unknown[pd1][pd1]))) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((d2 == 0bv32 && d1 == 0bv32) && ((((\result == d1 && pd1 == d1) && pd1 == d1) && !(d2 == pd1)) || (((\result == d2 && !(\result == d1)) && d2 == \result) && pd1 == d2))) || (!(d2 == d1) && !(pd1 == \result)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((!(d2 == d1) && !(pd2 == pd1)) || (((d2 == pd1 && d1 == 0bv32) && pd2 == 0bv32) && (((((pd2 == pd1 && d2 == pd1) && pd1 == pd2) && pd1 == d2) && !(pd1 == d1)) || ((((pd2 == pd1 && pd1 == pd2) && pd1 == d1) && pd1 == d1) && !(d2 == pd1))))) || (((d2 == 0bv32 && pd1 == d1) && pd2 == 0bv32) && (((((pd2 == pd1 && d2 == pd1) && pd1 == pd2) && pd1 == d2) && !(pd1 == d1)) || ((((pd2 == pd1 && pd1 == pd2) && pd1 == d1) && pd1 == d1) && !(d2 == pd1)))) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant [2021-10-16 02:22:44,204 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,204 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,204 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,206 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-16 02:22:44,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] Derived loop invariant: (((((((((!~bvsgt32(unknown-#memory_int-unknown[pd2][pd2], 0bv32) || !~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967288bv32), unknown-#memory_int-unknown[pd1][pd1])) || ~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967289bv32), unknown-#memory_int-unknown[pd1][pd1])) && !(d2 == d1)) && ((!~bvsgt32(unknown-#memory_int-unknown[pd2][pd2], 0bv32) || !~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967293bv32), unknown-#memory_int-unknown[pd1][pd1])) || ~bvslt32(~bvadd64(unknown-#memory_int-unknown[pd2][pd2], 4294967294bv32), unknown-#memory_int-unknown[pd1][pd1]))) && (forall ULTIMATE.start_main_~i~0 : bv32 :: (~bvadd64(ULTIMATE.start_main_~i~0, 1bv32) == unknown-#memory_int-unknown[pd2][pd2] || !~bvslt32(ULTIMATE.start_main_~i~0, unknown-#memory_int-unknown[pa][pa])) || ~bvslt32(~bvadd64(ULTIMATE.start_main_~i~0, 1bv32), unknown-#memory_int-unknown[pa][pa]))) && \result == 1bv32) && unknown-#memory_int-unknown[pd2][pd2] == i) && d2 == 0bv32) && d1 == 0bv32) && (!aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux || (forall ULTIMATE.start_main_~i~0 : bv32 :: (~bvadd64(ULTIMATE.start_main_~i~0, 1bv32) == unknown-#memory_int-unknown[pd2][pd2] || ~bvslt32(~bvadd64(ULTIMATE.start_main_~i~0, 1bv32), unknown-#memory_int-unknown[pd1][pd1])) || !~bvslt32(ULTIMATE.start_main_~i~0, unknown-#memory_int-unknown[pd1][pd1]))) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((\result == d2 && d2 == 0bv32) && d1 == 0bv32) && !(\result == d1)) && d2 == \result) || ((((!(d2 == \result) && \result == d1) && d2 == 0bv32) && d1 == 0bv32) && \result == d1) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:22:44,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63095a61-cd17-40ea-8aef-438c536d52d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...