./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d98e92b0e397ee2afc9955ae7b4baaedb8be19fb7d6475412e7373cae81d62ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:57:25,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:57:25,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:57:25,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:57:25,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:57:25,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:57:25,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:57:25,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:57:25,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:57:25,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:57:25,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:57:25,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:57:25,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:57:25,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:57:25,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:57:25,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:57:25,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:57:25,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:57:25,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:57:25,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:57:25,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:57:25,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:57:25,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:57:25,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:57:25,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:57:25,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:57:25,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:57:25,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:57:25,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:57:25,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:57:25,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:57:25,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:57:25,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:57:25,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:57:25,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:57:25,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:57:25,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:57:25,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:57:25,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:57:25,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:57:25,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:57:25,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:57:25,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:57:25,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:57:25,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:57:25,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:57:25,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:57:25,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:57:25,916 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:57:25,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:57:25,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:57:25,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:57:25,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:57:25,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:57:25,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:57:25,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:57:25,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:57:25,920 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:57:25,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:57:25,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:57:25,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:57:25,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:57:25,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:57:25,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:57:25,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:57:25,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:57:25,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:57:25,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:57:25,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:57:25,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:57:25,924 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:57:25,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:57:25,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:57:25,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:57:25,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d98e92b0e397ee2afc9955ae7b4baaedb8be19fb7d6475412e7373cae81d62ab [2021-11-22 14:57:26,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:57:26,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:57:26,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:57:26,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:57:26,350 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:57:26,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-tiling/poly2.c [2021-11-22 14:57:26,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/data/d33911d5b/f4c3a6eb762f41cfbcd14a4e86959540/FLAGc977157aa [2021-11-22 14:57:26,978 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:57:26,979 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/sv-benchmarks/c/array-tiling/poly2.c [2021-11-22 14:57:26,990 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/data/d33911d5b/f4c3a6eb762f41cfbcd14a4e86959540/FLAGc977157aa [2021-11-22 14:57:27,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/data/d33911d5b/f4c3a6eb762f41cfbcd14a4e86959540 [2021-11-22 14:57:27,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:57:27,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:57:27,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:57:27,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:57:27,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:57:27,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bee558a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27, skipping insertion in model container [2021-11-22 14:57:27,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:57:27,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:57:27,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/sv-benchmarks/c/array-tiling/poly2.c[396,409] [2021-11-22 14:57:27,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:57:27,584 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:57:27,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/sv-benchmarks/c/array-tiling/poly2.c[396,409] [2021-11-22 14:57:27,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:57:27,625 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:57:27,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27 WrapperNode [2021-11-22 14:57:27,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:57:27,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:57:27,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:57:27,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:57:27,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,662 INFO L137 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2021-11-22 14:57:27,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:57:27,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:57:27,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:57:27,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:57:27,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:57:27,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:57:27,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:57:27,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:57:27,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (1/1) ... [2021-11-22 14:57:27,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:57:27,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:27,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:57:27,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:57:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:57:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:57:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:57:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:57:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:57:27,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:57:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:57:27,875 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:57:27,877 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:57:28,025 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:57:28,039 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:57:28,039 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 14:57:28,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:57:28 BoogieIcfgContainer [2021-11-22 14:57:28,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:57:28,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:57:28,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:57:28,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:57:28,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:57:27" (1/3) ... [2021-11-22 14:57:28,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27aeaa57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:57:28, skipping insertion in model container [2021-11-22 14:57:28,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:27" (2/3) ... [2021-11-22 14:57:28,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27aeaa57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:57:28, skipping insertion in model container [2021-11-22 14:57:28,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:57:28" (3/3) ... [2021-11-22 14:57:28,065 INFO L111 eAbstractionObserver]: Analyzing ICFG poly2.c [2021-11-22 14:57:28,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:57:28,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:57:28,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:57:28,151 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:57:28,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:57:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 14:57:28,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:28,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:28,190 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:28,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1777950591, now seen corresponding path program 1 times [2021-11-22 14:57:28,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:28,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586009164] [2021-11-22 14:57:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:28,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:28,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:28,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586009164] [2021-11-22 14:57:28,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586009164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:28,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:28,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:57:28,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232427194] [2021-11-22 14:57:28,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:28,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:57:28,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:57:28,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:57:28,394 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:28,409 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-11-22 14:57:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:57:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 14:57:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:28,419 INFO L225 Difference]: With dead ends: 33 [2021-11-22 14:57:28,419 INFO L226 Difference]: Without dead ends: 15 [2021-11-22 14:57:28,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:57:28,427 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:28,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-22 14:57:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-22 14:57:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-22 14:57:28,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2021-11-22 14:57:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:28,460 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-22 14:57:28,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-22 14:57:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 14:57:28,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:28,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:28,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:57:28,462 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:28,463 INFO L85 PathProgramCache]: Analyzing trace with hash 747895801, now seen corresponding path program 1 times [2021-11-22 14:57:28,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:28,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977299280] [2021-11-22 14:57:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:28,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:28,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:28,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977299280] [2021-11-22 14:57:28,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977299280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:28,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:28,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:57:28,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697690857] [2021-11-22 14:57:28,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:28,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:57:28,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:57:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:57:28,576 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:28,609 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-11-22 14:57:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:57:28,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 14:57:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:28,611 INFO L225 Difference]: With dead ends: 27 [2021-11-22 14:57:28,611 INFO L226 Difference]: Without dead ends: 17 [2021-11-22 14:57:28,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:57:28,613 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:28,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-22 14:57:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-22 14:57:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-22 14:57:28,619 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2021-11-22 14:57:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:28,619 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-22 14:57:28,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-22 14:57:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 14:57:28,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:28,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:28,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:57:28,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash -483954537, now seen corresponding path program 1 times [2021-11-22 14:57:28,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:28,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869329993] [2021-11-22 14:57:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:28,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:28,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:28,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203520941] [2021-11-22 14:57:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:28,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:28,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:28,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:28,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:57:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:28,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 14:57:28,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:28,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:57:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:28,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:28,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869329993] [2021-11-22 14:57:28,960 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:28,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203520941] [2021-11-22 14:57:28,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203520941] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:57:28,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:57:28,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-22 14:57:28,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891972720] [2021-11-22 14:57:28,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:57:28,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:57:28,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:57:28,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:57:28,970 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:29,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:29,038 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-22 14:57:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:57:29,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 14:57:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:29,041 INFO L225 Difference]: With dead ends: 29 [2021-11-22 14:57:29,041 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 14:57:29,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:57:29,043 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:29,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:57:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 14:57:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-22 14:57:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-11-22 14:57:29,056 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2021-11-22 14:57:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:29,057 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-11-22 14:57:29,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-11-22 14:57:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 14:57:29,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:29,059 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:29,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:29,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:29,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:29,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1118844341, now seen corresponding path program 2 times [2021-11-22 14:57:29,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:29,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440885442] [2021-11-22 14:57:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:29,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:29,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:29,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536704288] [2021-11-22 14:57:29,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:57:29,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:29,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:29,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:29,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:57:29,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 14:57:29,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:57:29,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:57:29,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 14:57:29,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:57:29,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:29,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440885442] [2021-11-22 14:57:29,415 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:29,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536704288] [2021-11-22 14:57:29,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536704288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:29,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:29,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:57:29,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063451147] [2021-11-22 14:57:29,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:29,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:57:29,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:57:29,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:57:29,422 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:29,466 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-11-22 14:57:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:57:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 14:57:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:29,468 INFO L225 Difference]: With dead ends: 33 [2021-11-22 14:57:29,469 INFO L226 Difference]: Without dead ends: 26 [2021-11-22 14:57:29,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:57:29,471 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:29,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-22 14:57:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-11-22 14:57:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-22 14:57:29,481 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2021-11-22 14:57:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:29,481 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-22 14:57:29,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-22 14:57:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 14:57:29,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:29,482 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:29,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:29,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:29,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1181996269, now seen corresponding path program 1 times [2021-11-22 14:57:29,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:29,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276810105] [2021-11-22 14:57:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:29,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:29,694 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:29,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791587589] [2021-11-22 14:57:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:29,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:29,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:29,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:29,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:57:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:29,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 14:57:29,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 14:57:29,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:57:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 14:57:29,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276810105] [2021-11-22 14:57:29,912 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791587589] [2021-11-22 14:57:29,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791587589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:57:29,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:57:29,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-22 14:57:29,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135264324] [2021-11-22 14:57:29,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:57:29,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:57:29,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:29,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:57:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:57:29,917 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:30,000 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-11-22 14:57:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:57:30,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 14:57:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:30,004 INFO L225 Difference]: With dead ends: 42 [2021-11-22 14:57:30,004 INFO L226 Difference]: Without dead ends: 35 [2021-11-22 14:57:30,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:57:30,007 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:30,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 21 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-22 14:57:30,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2021-11-22 14:57:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-22 14:57:30,017 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2021-11-22 14:57:30,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:30,018 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-22 14:57:30,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-22 14:57:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 14:57:30,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:30,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:30,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:30,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:30,230 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash -381665039, now seen corresponding path program 2 times [2021-11-22 14:57:30,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:30,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920057563] [2021-11-22 14:57:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:30,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:30,241 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:30,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493605623] [2021-11-22 14:57:30,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:57:30,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:30,242 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:30,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:57:30,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:57:30,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:57:30,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 14:57:30,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:30,386 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:57:30,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 14:57:30,495 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 14:57:30,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 14:57:30,661 INFO L354 Elim1Store]: treesize reduction 347, result has 11.0 percent of original size [2021-11-22 14:57:30,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 90 treesize of output 99 [2021-11-22 14:57:30,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:30,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:30,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:30,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 32 [2021-11-22 14:57:30,829 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 14:57:30,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 25 [2021-11-22 14:57:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:30,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:57:31,502 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:57:31,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 173 [2021-11-22 14:57:31,562 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 18 treesize of output 8 [2021-11-22 14:57:31,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2021-11-22 14:57:31,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 153 [2021-11-22 14:57:31,692 INFO L354 Elim1Store]: treesize reduction 69, result has 26.6 percent of original size [2021-11-22 14:57:31,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 596 treesize of output 577 [2021-11-22 14:57:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:31,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:31,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920057563] [2021-11-22 14:57:31,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:31,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493605623] [2021-11-22 14:57:31,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493605623] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:57:31,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:57:31,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-11-22 14:57:31,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161566654] [2021-11-22 14:57:31,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:57:31,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 14:57:31,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 14:57:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-11-22 14:57:31,930 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:34,486 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-11-22 14:57:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-22 14:57:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-22 14:57:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:34,488 INFO L225 Difference]: With dead ends: 95 [2021-11-22 14:57:34,489 INFO L226 Difference]: Without dead ends: 93 [2021-11-22 14:57:34,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 14:57:34,491 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 105 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:34,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 124 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 14:57:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-22 14:57:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 49. [2021-11-22 14:57:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-11-22 14:57:34,501 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 18 [2021-11-22 14:57:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:34,502 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-11-22 14:57:34,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-11-22 14:57:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 14:57:34,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:34,503 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:34,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:34,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 14:57:34,730 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1713393197, now seen corresponding path program 3 times [2021-11-22 14:57:34,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:34,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865585405] [2021-11-22 14:57:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:34,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:34,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:34,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473583375] [2021-11-22 14:57:34,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:57:34,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:34,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:34,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:34,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 14:57:34,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-22 14:57:34,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:57:34,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 14:57:34,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:34,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:57:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:35,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:35,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865585405] [2021-11-22 14:57:35,090 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:35,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473583375] [2021-11-22 14:57:35,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473583375] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:57:35,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:57:35,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-11-22 14:57:35,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782501917] [2021-11-22 14:57:35,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:57:35,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 14:57:35,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 14:57:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-22 14:57:35,093 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:35,335 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2021-11-22 14:57:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 14:57:35,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-22 14:57:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:35,337 INFO L225 Difference]: With dead ends: 139 [2021-11-22 14:57:35,337 INFO L226 Difference]: Without dead ends: 106 [2021-11-22 14:57:35,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-11-22 14:57:35,338 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 198 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:35,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 76 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:57:35,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-22 14:57:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 65. [2021-11-22 14:57:35,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.1875) internal successors, (76), 64 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2021-11-22 14:57:35,351 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 22 [2021-11-22 14:57:35,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:35,351 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2021-11-22 14:57:35,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:35,352 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2021-11-22 14:57:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 14:57:35,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:35,353 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:35,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:35,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:35,566 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash -349225019, now seen corresponding path program 1 times [2021-11-22 14:57:35,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:35,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183670998] [2021-11-22 14:57:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:35,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:35,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:35,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138041027] [2021-11-22 14:57:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:35,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:35,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:35,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:35,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 14:57:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:35,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:57:35,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:57:35,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:57:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:57:35,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183670998] [2021-11-22 14:57:35,794 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138041027] [2021-11-22 14:57:35,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138041027] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:57:35,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:57:35,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-22 14:57:35,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426472042] [2021-11-22 14:57:35,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:57:35,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 14:57:35,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:35,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 14:57:35,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:57:35,797 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:35,936 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2021-11-22 14:57:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 14:57:35,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 14:57:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:35,937 INFO L225 Difference]: With dead ends: 91 [2021-11-22 14:57:35,938 INFO L226 Difference]: Without dead ends: 79 [2021-11-22 14:57:35,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-22 14:57:35,939 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 94 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:35,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 47 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:57:35,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-22 14:57:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2021-11-22 14:57:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-11-22 14:57:35,961 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 24 [2021-11-22 14:57:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:35,961 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-11-22 14:57:35,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-11-22 14:57:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 14:57:35,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:35,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:35,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:36,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-22 14:57:36,182 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:36,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1533511587, now seen corresponding path program 2 times [2021-11-22 14:57:36,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:36,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451120764] [2021-11-22 14:57:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:36,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:36,199 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:36,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296510940] [2021-11-22 14:57:36,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:57:36,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:36,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:36,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:36,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 14:57:36,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:57:36,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:57:36,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 14:57:36,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:36,347 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:57:36,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 14:57:36,397 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:57:36,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:57:36,516 INFO L354 Elim1Store]: treesize reduction 348, result has 15.5 percent of original size [2021-11-22 14:57:36,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 92 treesize of output 120 [2021-11-22 14:57:36,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 53 [2021-11-22 14:57:36,653 INFO L354 Elim1Store]: treesize reduction 357, result has 13.3 percent of original size [2021-11-22 14:57:36,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 92 treesize of output 111 [2021-11-22 14:57:36,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:36,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:36,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 38 [2021-11-22 14:57:36,778 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 14:57:36,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-22 14:57:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:36,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:57:38,422 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:57:38,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 295 treesize of output 295 [2021-11-22 14:57:38,498 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 18 treesize of output 8 [2021-11-22 14:57:38,550 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 19 treesize of output 8 [2021-11-22 14:57:38,578 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 287 treesize of output 267 [2021-11-22 14:57:38,867 INFO L354 Elim1Store]: treesize reduction 112, result has 24.8 percent of original size [2021-11-22 14:57:38,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3924 treesize of output 3783 [2021-11-22 14:57:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:39,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451120764] [2021-11-22 14:57:39,854 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296510940] [2021-11-22 14:57:39,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296510940] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:57:39,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:57:39,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2021-11-22 14:57:39,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108528792] [2021-11-22 14:57:39,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:57:39,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-22 14:57:39,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-22 14:57:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2021-11-22 14:57:39,856 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:43,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:43,944 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2021-11-22 14:57:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-22 14:57:43,944 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 14:57:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:43,945 INFO L225 Difference]: With dead ends: 147 [2021-11-22 14:57:43,946 INFO L226 Difference]: Without dead ends: 126 [2021-11-22 14:57:43,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=300, Invalid=1592, Unknown=0, NotChecked=0, Total=1892 [2021-11-22 14:57:43,947 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 174 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:43,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 179 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 14:57:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-22 14:57:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 81. [2021-11-22 14:57:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.175) internal successors, (94), 80 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) [2021-11-22 14:57:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2021-11-22 14:57:43,977 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 26 [2021-11-22 14:57:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:43,977 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2021-11-22 14:57:43,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2021-11-22 14:57:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 14:57:43,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:43,981 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:44,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:44,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:44,194 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2031628823, now seen corresponding path program 4 times [2021-11-22 14:57:44,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:44,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029236476] [2021-11-22 14:57:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:44,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:44,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:44,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811185383] [2021-11-22 14:57:44,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:57:44,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:44,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:44,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:44,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8590ea4d-59b8-4ae4-b73c-e322c88dc067/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 14:57:44,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:57:44,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:57:44,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-22 14:57:44,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:44,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:57:44,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 14:57:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 96 [2021-11-22 14:57:44,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:57:44,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 34 [2021-11-22 14:57:44,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,555 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:57:44,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 93 [2021-11-22 14:57:44,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 24 [2021-11-22 14:57:44,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:57:44,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2021-11-22 14:57:44,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:44,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,800 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-22 14:57:44,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 160 [2021-11-22 14:57:44,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:44,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 50 [2021-11-22 14:57:44,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:44,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:44,954 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-22 14:57:44,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 160 [2021-11-22 14:57:44,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:57:45,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:45,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 62 [2021-11-22 14:57:45,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:45,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,142 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-22 14:57:45,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 160 [2021-11-22 14:57:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:45,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 46 [2021-11-22 14:57:45,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:57:45,318 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:57:45,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 49 [2021-11-22 14:57:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:45,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:57:50,349 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:57:50,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1141 treesize of output 1141 [2021-11-22 14:57:50,455 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 19 treesize of output 8 [2021-11-22 14:57:50,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-11-22 14:57:50,803 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 1133 treesize of output 1097 [2021-11-22 14:57:50,982 INFO L354 Elim1Store]: treesize reduction 167, result has 22.7 percent of original size [2021-11-22 14:57:50,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82081182720 treesize of output 81501243871