./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array12_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array12_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa --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 4cd544b9fc2c4c641198812054f6f7e3a4b46d14448acc5758393bf17818405b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:14:47,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:14:47,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:14:47,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:14:47,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:14:47,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:14:47,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:14:47,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:14:47,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:14:47,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:14:47,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:14:47,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:14:47,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:14:47,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:14:47,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:14:47,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:14:47,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:14:47,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:14:47,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:14:47,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:14:47,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:14:47,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:14:47,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:14:47,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:14:47,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:14:47,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:14:47,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:14:47,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:14:47,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:14:47,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:14:47,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:14:47,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:14:47,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:14:47,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:14:47,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:14:47,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:14:47,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:14:47,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:14:47,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:14:47,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:14:47,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:14:47,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:14:47,857 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:14:47,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:14:47,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:14:47,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:14:47,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:14:47,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:14:47,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:14:47,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:14:47,860 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:14:47,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:14:47,860 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:14:47,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:14:47,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:14:47,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:14:47,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:14:47,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:14:47,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:14:47,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:14:47,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:14:47,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:14:47,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:14:47,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:14:47,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:14:47,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:14:47,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:14:47,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:14:47,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:14:47,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:14:47,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:14:47,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:14:47,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:14:47,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:14:47,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:14:47,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:14:47,864 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_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd544b9fc2c4c641198812054f6f7e3a4b46d14448acc5758393bf17818405b [2021-12-06 17:14:48,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:14:48,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:14:48,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:14:48,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:14:48,066 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:14:48,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-patterns/array12_pattern.c [2021-12-06 17:14:48,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/data/cbcbf8af5/db8f679fe33a4acbb212bcf019023eaa/FLAGb8c3846be [2021-12-06 17:14:48,476 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:14:48,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/sv-benchmarks/c/array-patterns/array12_pattern.c [2021-12-06 17:14:48,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/data/cbcbf8af5/db8f679fe33a4acbb212bcf019023eaa/FLAGb8c3846be [2021-12-06 17:14:48,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/data/cbcbf8af5/db8f679fe33a4acbb212bcf019023eaa [2021-12-06 17:14:48,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:14:48,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:14:48,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:14:48,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:14:48,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:14:48,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5330c058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48, skipping insertion in model container [2021-12-06 17:14:48,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:14:48,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:14:48,623 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_4364b635-aafe-48fa-868d-dd075fa391db/sv-benchmarks/c/array-patterns/array12_pattern.c[1349,1362] [2021-12-06 17:14:48,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:14:48,643 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:14:48,652 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_4364b635-aafe-48fa-868d-dd075fa391db/sv-benchmarks/c/array-patterns/array12_pattern.c[1349,1362] [2021-12-06 17:14:48,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:14:48,669 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:14:48,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48 WrapperNode [2021-12-06 17:14:48,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:14:48,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:14:48,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:14:48,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:14:48,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,706 INFO L137 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2021-12-06 17:14:48,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:14:48,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:14:48,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:14:48,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:14:48,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:14:48,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:14:48,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:14:48,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:14:48,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (1/1) ... [2021-12-06 17:14:48,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:14:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:48,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:14:48,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:14:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:14:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 17:14:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 17:14:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:14:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:14:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:14:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:14:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:14:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:14:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:14:48,857 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:14:48,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:14:48,956 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:14:48,960 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:14:48,960 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 17:14:48,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:14:48 BoogieIcfgContainer [2021-12-06 17:14:48,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:14:48,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:14:48,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:14:48,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:14:48,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:14:48" (1/3) ... [2021-12-06 17:14:48,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbe5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:14:48, skipping insertion in model container [2021-12-06 17:14:48,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:48" (2/3) ... [2021-12-06 17:14:48,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbe5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:14:48, skipping insertion in model container [2021-12-06 17:14:48,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:14:48" (3/3) ... [2021-12-06 17:14:48,968 INFO L111 eAbstractionObserver]: Analyzing ICFG array12_pattern.c [2021-12-06 17:14:48,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:14:48,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:14:49,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:14:49,013 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 [2021-12-06 17:14:49,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:14:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:14:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 17:14:49,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:49,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:49,031 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:14:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2136223091, now seen corresponding path program 1 times [2021-12-06 17:14:49,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:49,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462110065] [2021-12-06 17:14:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:49,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:49,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:14:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:14:49,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:49,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462110065] [2021-12-06 17:14:49,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462110065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:49,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:49,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:14:49,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075243817] [2021-12-06 17:14:49,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:49,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:14:49,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:14:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:14:49,224 INFO L87 Difference]: Start difference. First operand has 30 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:14:49,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:49,241 INFO L93 Difference]: Finished difference Result 57 states and 87 transitions. [2021-12-06 17:14:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:14:49,243 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 17:14:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:49,248 INFO L225 Difference]: With dead ends: 57 [2021-12-06 17:14:49,248 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 17:14:49,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:14:49,256 INFO L933 BasicCegarLoop]: 36 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, 36 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 [2021-12-06 17:14:49,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 17:14:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 17:14:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:14:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-06 17:14:49,289 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2021-12-06 17:14:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:49,290 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-06 17:14:49,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:14:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-06 17:14:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 17:14:49,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:49,292 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:49,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:14:49,293 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:14:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1040942554, now seen corresponding path program 1 times [2021-12-06 17:14:49,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:49,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570330703] [2021-12-06 17:14:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:49,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:49,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:49,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723282818] [2021-12-06 17:14:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:49,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:49,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:49,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:49,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:14:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:49,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:14:49,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:14:49,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:49,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:49,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570330703] [2021-12-06 17:14:49,496 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:49,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723282818] [2021-12-06 17:14:49,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723282818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:49,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:49,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:14:49,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083629525] [2021-12-06 17:14:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:49,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:14:49,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:49,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:14:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:14:49,499 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:14:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:49,582 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2021-12-06 17:14:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:14:49,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-12-06 17:14:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:49,583 INFO L225 Difference]: With dead ends: 56 [2021-12-06 17:14:49,583 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 17:14:49,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:49,585 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:49,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 49 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 17:14:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2021-12-06 17:14:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:14:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-12-06 17:14:49,594 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 27 [2021-12-06 17:14:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:49,594 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-12-06 17:14:49,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:14:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-12-06 17:14:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 17:14:49,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:49,596 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:49,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:49,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:49,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:14:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash -66078307, now seen corresponding path program 1 times [2021-12-06 17:14:49,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:49,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479340609] [2021-12-06 17:14:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:49,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:49,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:49,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703679520] [2021-12-06 17:14:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:49,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:49,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:49,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:49,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:14:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:49,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:14:49,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:14:49,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:49,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:49,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479340609] [2021-12-06 17:14:49,988 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:49,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703679520] [2021-12-06 17:14:49,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703679520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:49,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:49,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:14:49,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291557155] [2021-12-06 17:14:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:49,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:14:49,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:14:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:14:49,991 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:14:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:50,026 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2021-12-06 17:14:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:14:50,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-12-06 17:14:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:50,027 INFO L225 Difference]: With dead ends: 59 [2021-12-06 17:14:50,027 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 17:14:50,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:50,029 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:50,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 17:14:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2021-12-06 17:14:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:14:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-12-06 17:14:50,035 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 33 [2021-12-06 17:14:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:50,035 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-12-06 17:14:50,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:14:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-12-06 17:14:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 17:14:50,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:50,036 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:50,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:14:50,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:50,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:14:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1831364287, now seen corresponding path program 1 times [2021-12-06 17:14:50,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:50,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239640519] [2021-12-06 17:14:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:50,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:50,283 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:50,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067803013] [2021-12-06 17:14:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:50,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:50,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:50,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:50,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:14:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:50,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 17:14:50,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:50,851 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 0 case distinctions, treesize of input 90 treesize of output 85 [2021-12-06 17:14:50,867 INFO L354 Elim1Store]: treesize reduction 182, result has 0.5 percent of original size [2021-12-06 17:14:50,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 83 treesize of output 58 [2021-12-06 17:14:50,883 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 17:14:50,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 3 [2021-12-06 17:14:51,165 INFO L354 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2021-12-06 17:14:51,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 26 [2021-12-06 17:14:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:14:51,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:51,462 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 89 treesize of output 85 [2021-12-06 17:14:54,866 INFO L354 Elim1Store]: treesize reduction 104, result has 55.0 percent of original size [2021-12-06 17:14:54,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 85 treesize of output 148 [2021-12-06 17:14:55,746 INFO L244 Elim1Store]: Index analysis took 153 ms [2021-12-06 17:14:55,829 INFO L354 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2021-12-06 17:14:55,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 26 [2021-12-06 17:14:56,181 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-06 17:14:56,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 6 [2021-12-06 17:14:56,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:14:56,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2021-12-06 17:14:57,098 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:14:57,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 109 [2021-12-06 17:14:58,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:58,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239640519] [2021-12-06 17:14:58,485 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:58,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067803013] [2021-12-06 17:14:58,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067803013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:14:58,486 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:14:58,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-12-06 17:14:58,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146297739] [2021-12-06 17:14:58,486 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:58,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:14:58,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:14:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-12-06 17:14:58,488 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:14:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:58,946 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2021-12-06 17:14:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 17:14:58,946 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2021-12-06 17:14:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:58,949 INFO L225 Difference]: With dead ends: 117 [2021-12-06 17:14:58,949 INFO L226 Difference]: Without dead ends: 90 [2021-12-06 17:14:58,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:14:58,951 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 127 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:58,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 161 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 254 Invalid, 0 Unknown, 136 Unchecked, 0.1s Time] [2021-12-06 17:14:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-06 17:14:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 57. [2021-12-06 17:14:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:14:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-12-06 17:14:58,967 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 37 [2021-12-06 17:14:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:58,967 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-12-06 17:14:58,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:14:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-12-06 17:14:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 17:14:58,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:58,969 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:58,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:14:59,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-06 17:14:59,170 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:14:59,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:59,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1155769123, now seen corresponding path program 2 times [2021-12-06 17:14:59,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:59,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387930581] [2021-12-06 17:14:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:59,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:59,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:59,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185204171] [2021-12-06 17:14:59,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:59,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:59,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:59,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:59,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:14:59,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:59,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:59,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:14:59,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:14:59,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:14:59,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:59,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387930581] [2021-12-06 17:14:59,310 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:59,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185204171] [2021-12-06 17:14:59,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185204171] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:59,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:59,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 17:14:59,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227996202] [2021-12-06 17:14:59,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:59,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:14:59,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:14:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:59,311 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:14:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:59,546 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2021-12-06 17:14:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:14:59,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2021-12-06 17:14:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:59,548 INFO L225 Difference]: With dead ends: 137 [2021-12-06 17:14:59,549 INFO L226 Difference]: Without dead ends: 112 [2021-12-06 17:14:59,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:14:59,550 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 87 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:59,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 110 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:14:59,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-06 17:14:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2021-12-06 17:14:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 states have internal predecessors, (83), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:14:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2021-12-06 17:14:59,561 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 39 [2021-12-06 17:14:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:59,561 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2021-12-06 17:14:59,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:14:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2021-12-06 17:14:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 17:14:59,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:59,563 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:59,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:59,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:59,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:14:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1584262531, now seen corresponding path program 3 times [2021-12-06 17:14:59,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:59,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940109825] [2021-12-06 17:14:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:59,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:59,780 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:59,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078513863] [2021-12-06 17:14:59,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:14:59,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:59,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:59,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:59,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:14:59,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 17:14:59,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:59,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 17:14:59,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:59,951 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 0 case distinctions, treesize of input 90 treesize of output 85 [2021-12-06 17:15:03,596 INFO L354 Elim1Store]: treesize reduction 100, result has 45.4 percent of original size [2021-12-06 17:15:03,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 83 treesize of output 140 [2021-12-06 17:15:05,805 INFO L244 Elim1Store]: Index analysis took 221 ms [2021-12-06 17:15:05,991 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:15:05,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 76 [2021-12-06 17:15:06,602 INFO L244 Elim1Store]: Index analysis took 246 ms [2021-12-06 17:15:06,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:15:06,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 80 [2021-12-06 17:15:08,843 INFO L354 Elim1Store]: treesize reduction 103, result has 41.1 percent of original size [2021-12-06 17:15:08,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 110 [2021-12-06 17:15:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 17:15:12,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:12,387 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 89 treesize of output 85 [2021-12-06 17:15:12,448 INFO L354 Elim1Store]: treesize reduction 146, result has 36.8 percent of original size [2021-12-06 17:15:12,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 85 treesize of output 106 [2021-12-06 17:15:12,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 6 [2021-12-06 17:15:12,500 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:15:12,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2021-12-06 17:15:12,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:12,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940109825] [2021-12-06 17:15:12,650 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:12,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078513863] [2021-12-06 17:15:12,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078513863] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:15:12,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:15:12,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-12-06 17:15:12,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66218121] [2021-12-06 17:15:12,651 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:12,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:15:12,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:12,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:15:12,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:15:12,652 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:15:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:12,946 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2021-12-06 17:15:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:15:12,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2021-12-06 17:15:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:12,948 INFO L225 Difference]: With dead ends: 101 [2021-12-06 17:15:12,948 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 17:15:12,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:15:12,949 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:12,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 143 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2021-12-06 17:15:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 17:15:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 67. [2021-12-06 17:15:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:15:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2021-12-06 17:15:12,959 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 39 [2021-12-06 17:15:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:12,959 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2021-12-06 17:15:12,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:15:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2021-12-06 17:15:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 17:15:12,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:12,960 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:12,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 17:15:13,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:13,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:13,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2076840219, now seen corresponding path program 4 times [2021-12-06 17:15:13,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:13,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596649901] [2021-12-06 17:15:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:13,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:13,176 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:13,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713736164] [2021-12-06 17:15:13,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:15:13,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:13,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:13,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:13,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:15:13,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:15:13,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:13,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:15:13,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 17:15:13,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 17:15:13,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:13,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596649901] [2021-12-06 17:15:13,342 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:13,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713736164] [2021-12-06 17:15:13,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713736164] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:13,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:13,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 17:15:13,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901096229] [2021-12-06 17:15:13,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:13,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:15:13,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:13,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:15:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:15:13,344 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:15:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:14,175 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2021-12-06 17:15:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:15:14,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2021-12-06 17:15:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:14,178 INFO L225 Difference]: With dead ends: 159 [2021-12-06 17:15:14,178 INFO L226 Difference]: Without dead ends: 143 [2021-12-06 17:15:14,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:15:14,179 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 71 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:14,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 99 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:15:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-06 17:15:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 74. [2021-12-06 17:15:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:15:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2021-12-06 17:15:14,194 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 41 [2021-12-06 17:15:14,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:14,194 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2021-12-06 17:15:14,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:15:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2021-12-06 17:15:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 17:15:14,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:14,196 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:14,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:15:14,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 17:15:14,397 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -624697650, now seen corresponding path program 5 times [2021-12-06 17:15:14,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:14,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206584397] [2021-12-06 17:15:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:14,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:14,430 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:14,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757324344] [2021-12-06 17:15:14,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:15:14,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:14,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:14,434 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:14,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:15:14,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 17:15:14,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:14,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:15:14,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 17:15:14,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:15:14,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:14,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206584397] [2021-12-06 17:15:14,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:14,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757324344] [2021-12-06 17:15:14,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757324344] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:14,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:14,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 17:15:14,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316581566] [2021-12-06 17:15:14,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:14,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:15:14,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:15:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:15:14,655 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:15:14,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:14,832 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2021-12-06 17:15:14,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:15:14,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-06 17:15:14,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:14,834 INFO L225 Difference]: With dead ends: 106 [2021-12-06 17:15:14,834 INFO L226 Difference]: Without dead ends: 76 [2021-12-06 17:15:14,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:15:14,835 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 59 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:14,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 97 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:15:14,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-06 17:15:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2021-12-06 17:15:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:15:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2021-12-06 17:15:14,842 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 42 [2021-12-06 17:15:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:14,842 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2021-12-06 17:15:14,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:15:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2021-12-06 17:15:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 17:15:14,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:14,843 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:14,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 17:15:15,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:15,045 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:15,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1532894260, now seen corresponding path program 6 times [2021-12-06 17:15:15,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:15,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744299289] [2021-12-06 17:15:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:15,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:15,072 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:15,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579337539] [2021-12-06 17:15:15,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:15:15,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:15,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:15,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:15,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:15:15,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 17:15:15,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:15,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:15:15,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:15:15,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:15:15,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:15,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744299289] [2021-12-06 17:15:15,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:15,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579337539] [2021-12-06 17:15:15,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579337539] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:15,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:15,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-12-06 17:15:15,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277129408] [2021-12-06 17:15:15,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:15,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:15:15,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:15,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:15:15,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:15:15,257 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:15:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:15,430 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-12-06 17:15:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:15:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-12-06 17:15:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:15,431 INFO L225 Difference]: With dead ends: 81 [2021-12-06 17:15:15,431 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 17:15:15,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:15:15,432 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 39 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:15,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 79 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:15:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 17:15:15,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2021-12-06 17:15:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:15:15,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-12-06 17:15:15,436 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 44 [2021-12-06 17:15:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:15,436 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-12-06 17:15:15,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:15:15,436 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-12-06 17:15:15,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 17:15:15,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:15,437 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:15,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 17:15:15,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:15,639 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1334685611, now seen corresponding path program 7 times [2021-12-06 17:15:15,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:15,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445592055] [2021-12-06 17:15:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:15,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:15,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:15,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525939781] [2021-12-06 17:15:15,663 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 17:15:15,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:15,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:15,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:15,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 17:15:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:15,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:15:15,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 17:15:15,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 17:15:15,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:15,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445592055] [2021-12-06 17:15:15,839 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:15,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525939781] [2021-12-06 17:15:15,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525939781] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:15,839 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:15,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 17:15:15,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059797739] [2021-12-06 17:15:15,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:15,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:15:15,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:15:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:15:15,840 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:15:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:16,226 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-12-06 17:15:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:15:16,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2021-12-06 17:15:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:16,227 INFO L225 Difference]: With dead ends: 62 [2021-12-06 17:15:16,227 INFO L226 Difference]: Without dead ends: 58 [2021-12-06 17:15:16,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:15:16,228 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 50 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:16,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 75 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:15:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-06 17:15:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-12-06 17:15:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:15:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-12-06 17:15:16,233 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 48 [2021-12-06 17:15:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:16,233 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-12-06 17:15:16,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:15:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-12-06 17:15:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 17:15:16,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:16,234 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:16,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 17:15:16,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:16,436 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1249277894, now seen corresponding path program 8 times [2021-12-06 17:15:16,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:16,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651338593] [2021-12-06 17:15:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:16,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:16,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:16,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330363452] [2021-12-06 17:15:16,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:15:16,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:16,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:16,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:16,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 17:15:17,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:15:17,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:17,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-06 17:15:17,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:17,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 17:15:17,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 17:15:17,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:15:17,395 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 0 case distinctions, treesize of input 79 treesize of output 72 [2021-12-06 17:15:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:15:17,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 97 [2021-12-06 17:15:17,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 50 treesize of output 21 [2021-12-06 17:15:17,592 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 0 case distinctions, treesize of input 97 treesize of output 88 [2021-12-06 17:15:17,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 130 [2021-12-06 17:15:17,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 67 treesize of output 25 [2021-12-06 17:15:17,751 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 0 case distinctions, treesize of input 79 treesize of output 68 [2021-12-06 17:15:17,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 103 [2021-12-06 17:15:17,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:17,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 38 treesize of output 15 [2021-12-06 17:15:18,338 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 0 case distinctions, treesize of input 133 treesize of output 120 [2021-12-06 17:15:18,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:18,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:19,883 INFO L354 Elim1Store]: treesize reduction 598, result has 32.0 percent of original size [2021-12-06 17:15:19,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 119 treesize of output 373 [2021-12-06 17:15:20,078 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 17:15:20,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 17:15:22,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:22,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:23,072 INFO L354 Elim1Store]: treesize reduction 30, result has 75.6 percent of original size [2021-12-06 17:15:23,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 324 treesize of output 345 [2021-12-06 17:15:39,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:15:39,923 INFO L354 Elim1Store]: treesize reduction 42, result has 78.2 percent of original size [2021-12-06 17:15:39,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 228 treesize of output 244 [2021-12-06 17:15:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:15:40,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:19,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:19,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651338593] [2021-12-06 17:16:19,728 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:19,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330363452] [2021-12-06 17:16:19,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330363452] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:19,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:16:19,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-12-06 17:16:19,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410488639] [2021-12-06 17:16:19,729 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:19,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 17:16:19,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 17:16:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1763, Unknown=6, NotChecked=0, Total=1980 [2021-12-06 17:16:19,730 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 29 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:16:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:22,866 INFO L93 Difference]: Finished difference Result 144 states and 169 transitions. [2021-12-06 17:16:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 17:16:22,866 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 29 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2021-12-06 17:16:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:22,867 INFO L225 Difference]: With dead ends: 144 [2021-12-06 17:16:22,867 INFO L226 Difference]: Without dead ends: 140 [2021-12-06 17:16:22,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=257, Invalid=2186, Unknown=7, NotChecked=0, Total=2450 [2021-12-06 17:16:22,869 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 66 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 773 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:22,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 374 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 302 Invalid, 0 Unknown, 773 Unchecked, 0.6s Time] [2021-12-06 17:16:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-06 17:16:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 86. [2021-12-06 17:16:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 77 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:16:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2021-12-06 17:16:22,878 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 55 [2021-12-06 17:16:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:22,879 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2021-12-06 17:16:22,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 29 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:16:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2021-12-06 17:16:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:16:22,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:22,880 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:22,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 17:16:23,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:23,081 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1328435676, now seen corresponding path program 9 times [2021-12-06 17:16:23,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:23,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889825102] [2021-12-06 17:16:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:23,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:23,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:23,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703454732] [2021-12-06 17:16:23,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:16:23,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:23,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:23,095 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:23,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 17:16:24,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 17:16:24,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:24,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:16:24,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 17:16:24,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 17:16:24,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:24,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889825102] [2021-12-06 17:16:24,737 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:24,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703454732] [2021-12-06 17:16:24,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703454732] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:24,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:24,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 17:16:24,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762780617] [2021-12-06 17:16:24,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:24,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:16:24,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:16:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:16:24,739 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:16:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:25,208 INFO L93 Difference]: Finished difference Result 167 states and 196 transitions. [2021-12-06 17:16:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:16:25,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2021-12-06 17:16:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:25,210 INFO L225 Difference]: With dead ends: 167 [2021-12-06 17:16:25,210 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 17:16:25,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:16:25,211 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 68 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:25,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 114 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:16:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 17:16:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 124. [2021-12-06 17:16:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 112 states have internal predecessors, (131), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:16:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2021-12-06 17:16:25,222 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 57 [2021-12-06 17:16:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:25,223 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2021-12-06 17:16:25,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:16:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2021-12-06 17:16:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:16:25,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:25,224 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:25,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 17:16:25,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:25,425 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:25,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1874529176, now seen corresponding path program 10 times [2021-12-06 17:16:25,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:25,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628736334] [2021-12-06 17:16:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:25,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:25,439 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:25,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244157027] [2021-12-06 17:16:25,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:16:25,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:25,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:25,441 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:25,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 17:16:25,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:16:25,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:25,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:16:25,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 17:16:25,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:16:25,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628736334] [2021-12-06 17:16:25,674 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:25,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244157027] [2021-12-06 17:16:25,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244157027] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:25,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 17:16:25,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846966930] [2021-12-06 17:16:25,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:25,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:16:25,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:16:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:16:25,675 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:16:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:26,201 INFO L93 Difference]: Finished difference Result 174 states and 200 transitions. [2021-12-06 17:16:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:16:26,201 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2021-12-06 17:16:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:26,202 INFO L225 Difference]: With dead ends: 174 [2021-12-06 17:16:26,202 INFO L226 Difference]: Without dead ends: 132 [2021-12-06 17:16:26,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:16:26,203 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 100 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:26,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 86 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:16:26,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-06 17:16:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 118. [2021-12-06 17:16:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 106 states have (on average 1.1226415094339623) internal successors, (119), 106 states have internal predecessors, (119), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:16:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2021-12-06 17:16:26,214 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 57 [2021-12-06 17:16:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:26,214 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2021-12-06 17:16:26,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:16:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2021-12-06 17:16:26,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 17:16:26,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:26,215 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:26,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 17:16:26,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 17:16:26,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:26,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1705219253, now seen corresponding path program 11 times [2021-12-06 17:16:26,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:26,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244309286] [2021-12-06 17:16:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:26,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:26,444 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:26,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028438497] [2021-12-06 17:16:26,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:16:26,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:26,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:26,447 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:26,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 17:16:26,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-06 17:16:26,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:26,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:16:26,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 17:16:26,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 17:16:26,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:26,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244309286] [2021-12-06 17:16:26,717 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:26,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028438497] [2021-12-06 17:16:26,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028438497] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:26,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:26,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-06 17:16:26,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223246517] [2021-12-06 17:16:26,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:26,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:16:26,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:16:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:16:26,719 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:16:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:26,948 INFO L93 Difference]: Finished difference Result 161 states and 177 transitions. [2021-12-06 17:16:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:16:26,948 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 62 [2021-12-06 17:16:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:26,949 INFO L225 Difference]: With dead ends: 161 [2021-12-06 17:16:26,949 INFO L226 Difference]: Without dead ends: 109 [2021-12-06 17:16:26,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:16:26,950 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 95 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:26,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 87 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:16:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-06 17:16:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2021-12-06 17:16:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 91 states have (on average 1.098901098901099) internal successors, (100), 91 states have internal predecessors, (100), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:16:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2021-12-06 17:16:26,964 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 62 [2021-12-06 17:16:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:26,964 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2021-12-06 17:16:26,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:16:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2021-12-06 17:16:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:16:26,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:26,966 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:26,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 17:16:27,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 17:16:27,167 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1763746438, now seen corresponding path program 12 times [2021-12-06 17:16:27,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:27,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227991485] [2021-12-06 17:16:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:27,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:27,194 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:27,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648074608] [2021-12-06 17:16:27,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:16:27,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:27,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:27,195 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:27,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 17:16:27,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-12-06 17:16:27,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:27,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:16:27,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 17:16:27,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 17:16:27,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:27,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227991485] [2021-12-06 17:16:27,535 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:27,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648074608] [2021-12-06 17:16:27,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648074608] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:27,535 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:27,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-06 17:16:27,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364845411] [2021-12-06 17:16:27,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:27,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:16:27,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:16:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:16:27,536 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:16:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:27,851 INFO L93 Difference]: Finished difference Result 170 states and 191 transitions. [2021-12-06 17:16:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 17:16:27,851 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 63 [2021-12-06 17:16:27,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:27,852 INFO L225 Difference]: With dead ends: 170 [2021-12-06 17:16:27,852 INFO L226 Difference]: Without dead ends: 137 [2021-12-06 17:16:27,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2021-12-06 17:16:27,853 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 92 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:27,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 103 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:16:27,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-06 17:16:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2021-12-06 17:16:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 109 states have (on average 1.1009174311926606) internal successors, (120), 109 states have internal predecessors, (120), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:16:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2021-12-06 17:16:27,868 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 63 [2021-12-06 17:16:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:27,868 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 134 transitions. [2021-12-06 17:16:27,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:16:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2021-12-06 17:16:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 17:16:27,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:27,869 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:27,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 17:16:28,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 17:16:28,070 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:28,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1511383042, now seen corresponding path program 1 times [2021-12-06 17:16:28,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:28,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58973536] [2021-12-06 17:16:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:28,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:28,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:28,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16764379] [2021-12-06 17:16:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:28,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:28,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:28,102 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:28,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4364b635-aafe-48fa-868d-dd075fa391db/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 17:16:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:29,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-06 17:16:29,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:29,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 17:16:29,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 17:16:29,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:16:29,158 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 0 case distinctions, treesize of input 79 treesize of output 72 [2021-12-06 17:16:29,175 INFO L354 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2021-12-06 17:16:29,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 95 [2021-12-06 17:16:29,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 50 treesize of output 21 [2021-12-06 17:16:29,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 67 treesize of output 26 [2021-12-06 17:16:29,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 67 [2021-12-06 17:16:29,406 INFO L354 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2021-12-06 17:16:29,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 88 [2021-12-06 17:16:29,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 17:16:29,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 44 treesize of output 19 [2021-12-06 17:16:29,541 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 0 case distinctions, treesize of input 87 treesize of output 76 [2021-12-06 17:16:29,584 INFO L354 Elim1Store]: treesize reduction 308, result has 14.2 percent of original size [2021-12-06 17:16:29,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 75 treesize of output 113 [2021-12-06 17:16:29,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:29,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 59 treesize of output 26 [2021-12-06 17:16:46,504 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 0 case distinctions, treesize of input 143 treesize of output 130 [2021-12-06 17:16:46,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:16:48,786 INFO L354 Elim1Store]: treesize reduction 1020, result has 23.1 percent of original size [2021-12-06 17:16:48,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 129 treesize of output 379 [2021-12-06 17:16:48,815 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 17:16:49,014 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 17:16:49,850 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 17:16:50,951 INFO L354 Elim1Store]: treesize reduction 233, result has 28.5 percent of original size [2021-12-06 17:16:50,951 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 357 treesize of output 362 [2021-12-06 17:17:50,804 WARN L227 SmtUtils]: Spent 12.01s on a formula simplification. DAG size of input: 50 DAG size of output: 31 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 17:17:50,805 INFO L354 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2021-12-06 17:17:50,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 418 treesize of output 416 [2021-12-06 17:17:51,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:17:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:17:51,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:17:51,743 INFO L244 Elim1Store]: Index analysis took 307 ms [2021-12-06 17:17:53,131 INFO L354 Elim1Store]: treesize reduction 521, result has 30.9 percent of original size [2021-12-06 17:17:53,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 80 treesize of output 263 [2021-12-06 17:17:57,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:17:57,744 INFO L244 Elim1Store]: Index analysis took 503 ms [2021-12-06 17:18:00,543 INFO L354 Elim1Store]: treesize reduction 608, result has 26.4 percent of original size [2021-12-06 17:18:00,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 250 [2021-12-06 17:18:06,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:18:06,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:18:07,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:18:07,165 INFO L244 Elim1Store]: Index analysis took 524 ms [2021-12-06 17:18:09,424 INFO L354 Elim1Store]: treesize reduction 477, result has 31.0 percent of original size [2021-12-06 17:18:09,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 73 treesize of output 244 [2021-12-06 17:19:22,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:23,004 INFO L244 Elim1Store]: Index analysis took 105 ms [2021-12-06 17:19:24,132 INFO L354 Elim1Store]: treesize reduction 608, result has 26.4 percent of original size [2021-12-06 17:19:24,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 250 [2021-12-06 17:19:26,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:26,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:26,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:26,893 INFO L244 Elim1Store]: Index analysis took 122 ms [2021-12-06 17:19:27,925 INFO L354 Elim1Store]: treesize reduction 521, result has 30.9 percent of original size [2021-12-06 17:19:27,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 80 treesize of output 263 [2021-12-06 17:19:30,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:30,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:30,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:30,092 INFO L244 Elim1Store]: Index analysis took 122 ms [2021-12-06 17:19:30,421 INFO L354 Elim1Store]: treesize reduction 690, result has 0.1 percent of original size [2021-12-06 17:19:30,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 73 treesize of output 1 [2021-12-06 17:19:48,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:48,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:48,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:19:52,670 INFO L354 Elim1Store]: treesize reduction 1305, result has 27.8 percent of original size [2021-12-06 17:19:52,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 126 treesize of output 545 [2021-12-06 17:20:10,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:20:10,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:20:10,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:20:14,592 INFO L354 Elim1Store]: treesize reduction 1278, result has 25.6 percent of original size [2021-12-06 17:20:14,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 119 treesize of output 481 [2021-12-06 17:20:28,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:20:35,086 WARN L227 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 249 DAG size of output: 95 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 17:20:35,087 INFO L354 Elim1Store]: treesize reduction 1427, result has 24.6 percent of original size [2021-12-06 17:20:35,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 131 treesize of output 509 [2021-12-06 17:21:29,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:30,630 INFO L354 Elim1Store]: treesize reduction 608, result has 26.4 percent of original size [2021-12-06 17:21:30,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 250 [2021-12-06 17:21:32,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:32,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:32,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:32,734 INFO L244 Elim1Store]: Index analysis took 132 ms [2021-12-06 17:21:33,886 INFO L354 Elim1Store]: treesize reduction 521, result has 30.9 percent of original size [2021-12-06 17:21:33,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 80 treesize of output 263 [2021-12-06 17:21:36,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:36,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:36,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:36,300 INFO L244 Elim1Store]: Index analysis took 149 ms [2021-12-06 17:21:36,635 INFO L354 Elim1Store]: treesize reduction 690, result has 0.1 percent of original size [2021-12-06 17:21:36,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 73 treesize of output 1