./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro --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 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:56:38,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:56:38,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:56:38,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:56:38,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:56:38,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:56:38,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:56:38,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:56:38,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:56:38,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:56:38,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:56:38,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:56:38,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:56:38,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:56:38,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:56:38,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:56:38,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:56:38,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:56:38,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:56:38,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:56:38,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:56:38,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:56:38,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:56:38,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:56:38,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:56:38,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:56:38,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:56:38,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:56:38,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:56:38,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:56:38,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:56:38,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:56:38,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:56:38,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:56:38,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:56:38,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:56:38,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:56:38,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:56:38,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:56:38,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:56:38,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:56:38,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:56:38,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:56:38,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:56:38,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:56:38,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:56:38,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:56:38,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:56:38,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:56:38,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:56:38,766 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:56:38,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:56:38,767 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:56:38,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:56:38,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:56:38,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:56:38,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:56:38,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:56:38,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:56:38,769 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:56:38,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:56:38,770 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:56:38,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:56:38,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:56:38,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:56:38,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:56:38,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:56:38,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:56:38,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:56:38,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:56:38,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:56:38,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:56:38,773 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:56:38,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:56:38,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:56:38,774 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_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 [2022-11-18 19:56:39,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:56:39,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:56:39,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:56:39,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:56:39,149 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:56:39,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/sina5.c [2022-11-18 19:56:39,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/data/7fcf379da/21f1f5fd215142ed9fcec20d84470c41/FLAG8e20a4ef4 [2022-11-18 19:56:39,864 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:56:39,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/sv-benchmarks/c/array-fpi/sina5.c [2022-11-18 19:56:39,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/data/7fcf379da/21f1f5fd215142ed9fcec20d84470c41/FLAG8e20a4ef4 [2022-11-18 19:56:40,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/data/7fcf379da/21f1f5fd215142ed9fcec20d84470c41 [2022-11-18 19:56:40,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:56:40,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:56:40,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:56:40,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:56:40,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:56:40,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dadb1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40, skipping insertion in model container [2022-11-18 19:56:40,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:56:40,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:56:40,500 WARN L234 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_f8304002-8031-403e-ba97-51a3e2b71d95/sv-benchmarks/c/array-fpi/sina5.c[588,601] [2022-11-18 19:56:40,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:56:40,577 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:56:40,601 WARN L234 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_f8304002-8031-403e-ba97-51a3e2b71d95/sv-benchmarks/c/array-fpi/sina5.c[588,601] [2022-11-18 19:56:40,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:56:40,655 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:56:40,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40 WrapperNode [2022-11-18 19:56:40,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:56:40,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:56:40,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:56:40,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:56:40,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,721 INFO L138 Inliner]: procedures = 17, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2022-11-18 19:56:40,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:56:40,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:56:40,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:56:40,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:56:40,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:56:40,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:56:40,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:56:40,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:56:40,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (1/1) ... [2022-11-18 19:56:40,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:56:40,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:40,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:56:40,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:56:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:56:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:56:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:56:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:56:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:56:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:56:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:56:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:56:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:56:40,977 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:56:40,981 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:56:41,341 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:56:41,361 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:56:41,361 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 19:56:41,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:41 BoogieIcfgContainer [2022-11-18 19:56:41,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:56:41,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:56:41,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:56:41,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:56:41,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:56:40" (1/3) ... [2022-11-18 19:56:41,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9cf6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:56:41, skipping insertion in model container [2022-11-18 19:56:41,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:40" (2/3) ... [2022-11-18 19:56:41,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9cf6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:56:41, skipping insertion in model container [2022-11-18 19:56:41,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:41" (3/3) ... [2022-11-18 19:56:41,383 INFO L112 eAbstractionObserver]: Analyzing ICFG sina5.c [2022-11-18 19:56:41,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:56:41,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:56:41,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:56:41,554 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@65e3ea03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:56:41,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:56:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:56:41,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:41,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:41,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-11-18 19:56:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:41,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890910711] [2022-11-18 19:56:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:41,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:41,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890910711] [2022-11-18 19:56:41,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890910711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:41,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:41,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:56:41,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645199510] [2022-11-18 19:56:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:56:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:41,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:56:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:56:41,937 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:41,966 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-11-18 19:56:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:56:41,980 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:56:41,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:41,989 INFO L225 Difference]: With dead ends: 56 [2022-11-18 19:56:41,990 INFO L226 Difference]: Without dead ends: 26 [2022-11-18 19:56:41,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:56:41,999 INFO L413 NwaCegarLoop]: 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 [2022-11-18 19:56:42,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:56:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-18 19:56:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-18 19:56:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-18 19:56:42,054 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-11-18 19:56:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:42,055 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-18 19:56:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-18 19:56:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:56:42,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:42,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:42,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:56:42,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:42,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-11-18 19:56:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:42,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952073439] [2022-11-18 19:56:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:42,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:42,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:42,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952073439] [2022-11-18 19:56:42,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952073439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:42,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:42,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:56:42,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297511707] [2022-11-18 19:56:42,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:42,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:42,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:42,353 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:42,457 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-11-18 19:56:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:56:42,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:56:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:42,459 INFO L225 Difference]: With dead ends: 61 [2022-11-18 19:56:42,459 INFO L226 Difference]: Without dead ends: 42 [2022-11-18 19:56:42,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:42,462 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:42,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:56:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-18 19:56:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-11-18 19:56:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-18 19:56:42,472 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-11-18 19:56:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:42,473 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-18 19:56:42,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-18 19:56:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 19:56:42,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:42,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:42,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:56:42,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-11-18 19:56:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:42,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282457759] [2022-11-18 19:56:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:45,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:45,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282457759] [2022-11-18 19:56:45,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282457759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:45,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776458348] [2022-11-18 19:56:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:45,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:45,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:45,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:45,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:56:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:45,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 19:56:45,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:45,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:45,700 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:56:45,701 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 19 [2022-11-18 19:56:45,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:56:46,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-18 19:56:46,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-11-18 19:56:46,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-11-18 19:56:46,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2022-11-18 19:56:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:46,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:47,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:47,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:47,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776458348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:48,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:48,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 44 [2022-11-18 19:56:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931285211] [2022-11-18 19:56:48,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:56:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:56:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1623, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:56:48,035 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:49,888 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-11-18 19:56:49,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:56:49,889 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 19:56:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:49,890 INFO L225 Difference]: With dead ends: 64 [2022-11-18 19:56:49,890 INFO L226 Difference]: Without dead ends: 62 [2022-11-18 19:56:49,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=478, Invalid=2714, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 19:56:49,892 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 103 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:49,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 119 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 426 Invalid, 0 Unknown, 44 Unchecked, 0.6s Time] [2022-11-18 19:56:49,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-18 19:56:49,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2022-11-18 19:56:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-11-18 19:56:49,906 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 28 [2022-11-18 19:56:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:49,906 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-11-18 19:56:49,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-11-18 19:56:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 19:56:49,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:49,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:49,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:50,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:50,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2022-11-18 19:56:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:50,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171271495] [2022-11-18 19:56:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:50,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:56:50,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:50,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171271495] [2022-11-18 19:56:50,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171271495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:50,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383656511] [2022-11-18 19:56:50,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:56:50,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:50,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:50,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:56:50,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:56:50,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:50,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:56:50,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:56:50,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:56:50,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383656511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:50,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:50,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:56:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000670087] [2022-11-18 19:56:50,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:56:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:56:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:56:50,453 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:50,685 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2022-11-18 19:56:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:56:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-18 19:56:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:50,687 INFO L225 Difference]: With dead ends: 134 [2022-11-18 19:56:50,687 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 19:56:50,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:56:50,691 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 84 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:50,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 58 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:56:50,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 19:56:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-11-18 19:56:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-11-18 19:56:50,719 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2022-11-18 19:56:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:50,720 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-11-18 19:56:50,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-11-18 19:56:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 19:56:50,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:50,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:50,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:56:50,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:50,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2022-11-18 19:56:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:50,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326125734] [2022-11-18 19:56:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:56:51,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:51,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326125734] [2022-11-18 19:56:51,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326125734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:51,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912916559] [2022-11-18 19:56:51,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:56:51,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:51,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:51,032 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:51,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:56:51,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:56:51,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:51,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:56:51,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:56:51,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:56:51,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912916559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:51,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:51,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:56:51,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877114269] [2022-11-18 19:56:51,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:51,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:56:51,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:51,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:56:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:56:51,235 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:51,412 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-11-18 19:56:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:56:51,413 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-18 19:56:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:51,415 INFO L225 Difference]: With dead ends: 74 [2022-11-18 19:56:51,415 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 19:56:51,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:56:51,417 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 108 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:51,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 48 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:56:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 19:56:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-11-18 19:56:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-11-18 19:56:51,438 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2022-11-18 19:56:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:51,439 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-11-18 19:56:51,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-11-18 19:56:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:56:51,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:51,443 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:51,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:56:51,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:51,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2022-11-18 19:56:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:51,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918537432] [2022-11-18 19:56:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:51,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:55,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:55,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918537432] [2022-11-18 19:56:55,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918537432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:55,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435441975] [2022-11-18 19:56:55,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:56:55,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:55,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:55,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:55,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:56:55,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:56:55,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:55,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-18 19:56:55,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:55,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:56:55,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:55,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:56:55,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-18 19:56:56,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:56,717 INFO L321 Elim1Store]: treesize reduction 91, result has 20.9 percent of original size [2022-11-18 19:56:56,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 51 [2022-11-18 19:56:57,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:57,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:57,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:57,142 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-18 19:56:57,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 66 [2022-11-18 19:56:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:58,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:58,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:58,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:58,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:58,175 INFO L321 Elim1Store]: treesize reduction 92, result has 17.9 percent of original size [2022-11-18 19:56:58,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 72 treesize of output 71 [2022-11-18 19:56:58,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:58,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:58,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:58,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:58,647 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-18 19:56:58,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 64 [2022-11-18 19:56:59,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:59,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:59,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:59,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:59,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:59,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:59,343 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-18 19:56:59,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 70 [2022-11-18 19:56:59,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:59,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:59,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:59,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:59,848 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-18 19:56:59,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 100 treesize of output 68 [2022-11-18 19:57:00,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:00,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:00,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:00,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:00,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:00,430 INFO L321 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-11-18 19:57:00,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 94 treesize of output 85 [2022-11-18 19:57:01,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:01,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:01,569 INFO L321 Elim1Store]: treesize reduction 370, result has 26.0 percent of original size [2022-11-18 19:57:01,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 155 treesize of output 225 [2022-11-18 19:57:12,067 INFO L321 Elim1Store]: treesize reduction 42, result has 63.5 percent of original size [2022-11-18 19:57:12,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 135 treesize of output 151 [2022-11-18 19:57:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:12,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:21,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435441975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:21,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:21,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 79 [2022-11-18 19:57:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775749453] [2022-11-18 19:57:21,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:21,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-18 19:57:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-18 19:57:21,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=5568, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 19:57:21,711 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:09,575 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2022-11-18 19:58:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 19:58:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:58:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:09,580 INFO L225 Difference]: With dead ends: 114 [2022-11-18 19:58:09,580 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 19:58:09,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 60.6s TimeCoverageRelationStatistics Valid=1140, Invalid=9990, Unknown=0, NotChecked=0, Total=11130 [2022-11-18 19:58:09,587 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:09,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 349 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 457 Invalid, 0 Unknown, 212 Unchecked, 3.4s Time] [2022-11-18 19:58:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 19:58:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2022-11-18 19:58:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 99 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2022-11-18 19:58:09,628 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 38 [2022-11-18 19:58:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:09,629 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2022-11-18 19:58:09,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2022-11-18 19:58:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:58:09,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:09,631 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:09,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 19:58:09,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:58:09,838 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:09,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1666934362, now seen corresponding path program 5 times [2022-11-18 19:58:09,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:09,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939134216] [2022-11-18 19:58:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:09,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:58:10,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:10,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939134216] [2022-11-18 19:58:10,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939134216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:10,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904109862] [2022-11-18 19:58:10,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:58:10,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:10,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:10,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:10,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:58:10,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:58:10,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:10,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:58:10,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:58:10,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:58:10,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904109862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:10,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:10,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-18 19:58:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692886951] [2022-11-18 19:58:10,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:10,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:58:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:58:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:58:10,604 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:11,416 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2022-11-18 19:58:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:58:11,417 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-18 19:58:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:11,418 INFO L225 Difference]: With dead ends: 171 [2022-11-18 19:58:11,418 INFO L226 Difference]: Without dead ends: 116 [2022-11-18 19:58:11,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:58:11,419 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 357 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:11,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 162 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:58:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-18 19:58:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 82. [2022-11-18 19:58:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-11-18 19:58:11,447 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 40 [2022-11-18 19:58:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:11,447 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-11-18 19:58:11,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-11-18 19:58:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 19:58:11,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:11,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:11,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:11,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:11,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -465930606, now seen corresponding path program 1 times [2022-11-18 19:58:11,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:11,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368408024] [2022-11-18 19:58:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:11,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:18,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368408024] [2022-11-18 19:58:18,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368408024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:18,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587292392] [2022-11-18 19:58:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:18,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:18,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:18,708 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:18,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:58:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:18,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-18 19:58:18,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:18,988 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:58:18,989 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 50 [2022-11-18 19:58:19,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:58:19,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:19,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:19,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 19:58:19,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 19:58:19,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 19:58:19,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 19:58:19,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 19:58:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:19,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:58:19,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:58:19,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:19,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-18 19:58:20,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:20,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-11-18 19:58:21,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2022-11-18 19:58:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:58:21,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:59,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:59,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 69 [2022-11-18 19:59:00,017 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select .cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2) (not (= (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-11-18 19:59:00,172 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse2) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-11-18 19:59:00,270 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse2) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-11-18 19:59:00,300 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse0 (+ (* c_~N~0 2) 1))) (or (= .cse0 (+ (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse0)))))) is different from false [2022-11-18 19:59:00,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:00,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 97 [2022-11-18 19:59:00,336 INFO L350 Elim1Store]: Elim1 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 669 treesize of output 649 [2022-11-18 19:59:00,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:00,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 426 treesize of output 412 [2022-11-18 19:59:00,447 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:00,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 656 treesize of output 578 [2022-11-18 19:59:00,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:00,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 601 treesize of output 641 [2022-11-18 19:59:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 9 not checked. [2022-11-18 19:59:02,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587292392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:02,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:02,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 18, 18] total 65 [2022-11-18 19:59:02,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699340392] [2022-11-18 19:59:02,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:02,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-18 19:59:02,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:02,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-18 19:59:02,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=3180, Unknown=14, NotChecked=484, Total=4160 [2022-11-18 19:59:02,258 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:34,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:34,987 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2022-11-18 19:59:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 19:59:34,988 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-18 19:59:34,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:34,989 INFO L225 Difference]: With dead ends: 127 [2022-11-18 19:59:34,990 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 19:59:34,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 72.8s TimeCoverageRelationStatistics Valid=1443, Invalid=9899, Unknown=16, NotChecked=852, Total=12210 [2022-11-18 19:59:34,994 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 239 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:34,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 137 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 952 Invalid, 0 Unknown, 409 Unchecked, 1.6s Time] [2022-11-18 19:59:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 19:59:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2022-11-18 19:59:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1318681318681318) internal successors, (103), 91 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2022-11-18 19:59:35,030 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 42 [2022-11-18 19:59:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:35,031 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2022-11-18 19:59:35,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2022-11-18 19:59:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 19:59:35,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:35,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:35,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:35,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:35,239 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:59:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 383514002, now seen corresponding path program 6 times [2022-11-18 19:59:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:35,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267475295] [2022-11-18 19:59:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267475295] [2022-11-18 19:59:42,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267475295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:42,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032526928] [2022-11-18 19:59:42,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:59:42,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:42,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:42,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:42,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:59:43,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:59:43,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:43,067 WARN L261 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-18 19:59:43,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:43,273 INFO L350 Elim1Store]: Elim1 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 16 [2022-11-18 19:59:43,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:59:43,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:43,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:59:43,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:43,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:43,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:59:44,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:44,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:44,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:44,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-18 19:59:45,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-11-18 19:59:45,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,412 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:59:45,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 66 [2022-11-18 19:59:45,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:45,963 INFO L321 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-11-18 19:59:45,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 81 [2022-11-18 19:59:47,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:47,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2022-11-18 19:59:47,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:47,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:48,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 93 [2022-11-18 19:59:48,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:48,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 88 [2022-11-18 19:59:49,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2022-11-18 19:59:49,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:49,860 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:59:49,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 99 [2022-11-18 19:59:50,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:50,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:50,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:50,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:50,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:50,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:50,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:50,551 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2022-11-18 19:59:50,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 108 [2022-11-18 19:59:51,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:51,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:51,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:51,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:51,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 94 [2022-11-18 19:59:52,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:52,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:52,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:52,745 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-11-18 19:59:52,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 87 [2022-11-18 19:59:53,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:53,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:53,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:53,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:53,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:53,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:53,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:53,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:53,528 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-18 19:59:53,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 75 [2022-11-18 19:59:54,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:54,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:54,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:54,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:54,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:54,874 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:59:54,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 44 [2022-11-18 19:59:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:55,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:57,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:57,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:57,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:57,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:00:57,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:57,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:57,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:00:57,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:57,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032526928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:00:57,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:00:57,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 42, 40] total 114 [2022-11-18 20:00:57,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719695735] [2022-11-18 20:00:57,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-11-18 20:00:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-11-18 20:00:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1260, Invalid=11622, Unknown=0, NotChecked=0, Total=12882 [2022-11-18 20:00:57,690 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 114 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 114 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:19,064 WARN L233 SmtUtils]: Spent 11.80s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:01:39,729 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:03:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:16,243 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2022-11-18 20:03:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-18 20:03:16,244 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 114 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-18 20:03:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:16,245 INFO L225 Difference]: With dead ends: 170 [2022-11-18 20:03:16,246 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 20:03:16,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8547 ImplicationChecksByTransitivity, 206.6s TimeCoverageRelationStatistics Valid=2340, Invalid=21498, Unknown=32, NotChecked=0, Total=23870 [2022-11-18 20:03:16,251 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1005 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:16,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 277 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 412 Invalid, 0 Unknown, 1005 Unchecked, 0.6s Time] [2022-11-18 20:03:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 20:03:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 156. [2022-11-18 20:03:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.1548387096774193) internal successors, (179), 155 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2022-11-18 20:03:16,311 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 48 [2022-11-18 20:03:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:16,312 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2022-11-18 20:03:16,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 114 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2022-11-18 20:03:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:03:16,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:16,314 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:16,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:16,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:16,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:16,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:16,522 INFO L85 PathProgramCache]: Analyzing trace with hash 686177872, now seen corresponding path program 7 times [2022-11-18 20:03:16,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:16,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031364353] [2022-11-18 20:03:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:16,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:03:16,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:16,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031364353] [2022-11-18 20:03:16,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031364353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:16,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793799147] [2022-11-18 20:03:16,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:03:16,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:16,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:16,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:16,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:03:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:16,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:16,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:03:17,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:03:17,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793799147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:17,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:17,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 20:03:17,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137260596] [2022-11-18 20:03:17,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:17,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:03:17,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:03:17,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:03:17,226 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:17,751 INFO L93 Difference]: Finished difference Result 302 states and 340 transitions. [2022-11-18 20:03:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:03:17,752 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-18 20:03:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:17,754 INFO L225 Difference]: With dead ends: 302 [2022-11-18 20:03:17,754 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 20:03:17,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:03:17,755 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 179 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:17,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 104 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 20:03:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 176. [2022-11-18 20:03:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0971428571428572) internal successors, (192), 175 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2022-11-18 20:03:17,831 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 50 [2022-11-18 20:03:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:17,832 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2022-11-18 20:03:17,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2022-11-18 20:03:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:03:17,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:17,834 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:17,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:18,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:03:18,036 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:18,037 INFO L85 PathProgramCache]: Analyzing trace with hash -921964338, now seen corresponding path program 8 times [2022-11-18 20:03:18,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:18,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957852310] [2022-11-18 20:03:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:18,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:03:18,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:18,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957852310] [2022-11-18 20:03:18,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957852310] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:18,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813924322] [2022-11-18 20:03:18,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:18,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:18,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:18,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:18,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:03:18,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:18,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:18,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:18,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:03:18,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:03:18,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813924322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:18,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:18,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 20:03:18,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579081075] [2022-11-18 20:03:18,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:18,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:03:18,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:03:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:03:18,772 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:19,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:19,649 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2022-11-18 20:03:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:03:19,650 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-18 20:03:19,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:19,651 INFO L225 Difference]: With dead ends: 212 [2022-11-18 20:03:19,652 INFO L226 Difference]: Without dead ends: 148 [2022-11-18 20:03:19,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:03:19,653 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 155 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:19,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 188 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:03:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-18 20:03:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 104. [2022-11-18 20:03:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 103 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2022-11-18 20:03:19,692 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 52 [2022-11-18 20:03:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:19,692 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2022-11-18 20:03:19,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2022-11-18 20:03:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 20:03:19,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:19,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-18 20:03:19,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:19,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:19,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:19,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:19,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1433546370, now seen corresponding path program 2 times [2022-11-18 20:03:19,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:19,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937483023] [2022-11-18 20:03:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:19,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:03:27,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:27,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937483023] [2022-11-18 20:03:27,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937483023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:27,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962810167] [2022-11-18 20:03:27,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:27,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:27,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:27,028 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:27,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:03:27,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:27,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:27,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 20:03:27,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:27,398 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:03:27,398 INFO L350 Elim1Store]: Elim1 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 108 treesize of output 102 [2022-11-18 20:03:27,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:03:27,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 20:03:27,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:27,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:03:28,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:03:28,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:03:28,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:03:28,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:03:28,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:03:28,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:03:28,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:03:28,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:03:28,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:28,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 20:03:28,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:28,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:03:28,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-18 20:03:29,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:29,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:29,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:29,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2022-11-18 20:03:29,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:29,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-11-18 20:03:30,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2022-11-18 20:03:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:03:30,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:45,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:04:45,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 74 [2022-11-18 20:04:45,997 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse3 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse3) (not (= .cse2 .cse3))))))) is different from false [2022-11-18 20:04:46,218 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse1 (+ (* c_~N~0 2) 1))) (or (not (= .cse0 .cse1)) (= (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse3 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse1)))))) is different from false [2022-11-18 20:04:46,356 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse1 (+ (* c_~N~0 2) 1))) (or (not (= .cse0 .cse1)) (= (+ (select .cse2 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse1)))))) is different from false [2022-11-18 20:04:46,381 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse3 (+ (* c_~N~0 2) 1)) (.cse2 (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|)))) (or (= (+ (select .cse0 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse3) (not (= .cse3 .cse2))))))) is different from false [2022-11-18 20:04:46,405 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 Int) (v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_783) (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse3 (+ (* c_~N~0 2) 1))) (or (= (+ (select .cse0 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse3) (not (= .cse2 .cse3))))))) is different from false [2022-11-18 20:04:46,432 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 Int) (v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_783) (+ .cse4 16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse3 (+ (* c_~N~0 2) 1))) (or (= (+ (select .cse0 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse3) (not (= .cse2 .cse3))))))) is different from false [2022-11-18 20:04:46,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:04:46,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 125 [2022-11-18 20:04:46,477 INFO L350 Elim1Store]: Elim1 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 729 treesize of output 705 [2022-11-18 20:04:46,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:04:46,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1047 treesize of output 1027 [2022-11-18 20:04:46,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:04:46,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1206 treesize of output 1068 [2022-11-18 20:04:46,743 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:04:46,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 695 treesize of output 661 [2022-11-18 20:05:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 20 not checked. [2022-11-18 20:05:14,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962810167] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:14,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:14,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 23] total 72 [2022-11-18 20:05:14,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42353499] [2022-11-18 20:05:14,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:14,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-18 20:05:14,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-18 20:05:14,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3991, Unknown=26, NotChecked=798, Total=5112 [2022-11-18 20:05:14,658 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:31,593 WARN L233 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 114 DAG size of output: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:06:01,318 WARN L233 SmtUtils]: Spent 14.00s on a formula simplification. DAG size of input: 134 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:06:12,421 WARN L233 SmtUtils]: Spent 8.75s on a formula simplification. DAG size of input: 115 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:06:27,946 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 71 DAG size of output: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:06:35,176 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 95 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:06:48,825 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 101 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:07:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:07,404 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2022-11-18 20:07:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 20:07:07,405 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-18 20:07:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:07,405 INFO L225 Difference]: With dead ends: 132 [2022-11-18 20:07:07,405 INFO L226 Difference]: Without dead ends: 87 [2022-11-18 20:07:07,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 88 SyntacticMatches, 29 SemanticMatches, 124 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 4891 ImplicationChecksByTransitivity, 188.8s TimeCoverageRelationStatistics Valid=1435, Invalid=12843, Unknown=26, NotChecked=1446, Total=15750 [2022-11-18 20:07:07,408 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 421 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 928 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:07,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 305 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1220 Invalid, 0 Unknown, 928 Unchecked, 3.1s Time] [2022-11-18 20:07:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-18 20:07:07,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2022-11-18 20:07:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-18 20:07:07,431 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 56 [2022-11-18 20:07:07,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:07,431 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-18 20:07:07,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-18 20:07:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 20:07:07,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:07,432 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:07,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:07,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:07,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:07:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1839482760, now seen corresponding path program 9 times [2022-11-18 20:07:07,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:07,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672029417] [2022-11-18 20:07:07,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:07,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:23,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672029417] [2022-11-18 20:07:23,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672029417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:23,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112179584] [2022-11-18 20:07:23,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:07:23,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:23,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:23,551 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8304002-8031-403e-ba97-51a3e2b71d95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:07:23,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:07:23,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:23,826 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 147 conjunts are in the unsatisfiable core [2022-11-18 20:07:23,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:23,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:07:23,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:23,905 INFO L350 Elim1Store]: Elim1 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 16 [2022-11-18 20:07:24,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:24,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:07:24,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:24,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:24,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 20:07:25,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:25,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:25,378 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-18 20:07:25,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 20:07:26,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:26,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:26,230 INFO L321 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-11-18 20:07:26,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 59 [2022-11-18 20:07:28,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:28,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:28,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:28,165 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-18 20:07:28,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 73 [2022-11-18 20:07:29,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,258 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-18 20:07:29,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 81 [2022-11-18 20:07:29,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:29,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:30,010 INFO L321 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2022-11-18 20:07:30,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 95 [2022-11-18 20:07:31,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:31,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:31,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:31,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:31,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:31,208 INFO L321 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2022-11-18 20:07:31,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 90 treesize of output 110 [2022-11-18 20:07:33,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:33,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:33,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:33,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:33,905 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-11-18 20:07:33,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 7 case distinctions, treesize of input 111 treesize of output 119 [2022-11-18 20:07:35,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:35,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:35,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:35,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:35,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:35,242 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-11-18 20:07:35,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 109 treesize of output 115 [2022-11-18 20:07:36,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:36,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:36,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:36,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:36,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:36,114 INFO L321 Elim1Store]: treesize reduction 106, result has 0.9 percent of original size [2022-11-18 20:07:36,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 117 treesize of output 128 [2022-11-18 20:07:37,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:37,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:37,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:37,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:37,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:37,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:37,719 INFO L217 Elim1Store]: Index analysis took 125 ms [2022-11-18 20:07:37,765 INFO L321 Elim1Store]: treesize reduction 138, result has 0.7 percent of original size [2022-11-18 20:07:37,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 11 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 122 treesize of output 140 [2022-11-18 20:07:40,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:40,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:40,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:40,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:40,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:40,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:40,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:40,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:40,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:40,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:40,742 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-11-18 20:07:40,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 9 disjoint index pairs (out of 66 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 122 [2022-11-18 20:07:42,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,352 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-11-18 20:07:42,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 120 [2022-11-18 20:07:43,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:43,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:43,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:43,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:43,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:43,331 INFO L321 Elim1Store]: treesize reduction 106, result has 0.9 percent of original size [2022-11-18 20:07:43,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 117 treesize of output 128 [2022-11-18 20:07:44,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:44,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:45,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:45,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:45,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:45,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:45,096 INFO L321 Elim1Store]: treesize reduction 138, result has 0.7 percent of original size [2022-11-18 20:07:45,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 11 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 119 treesize of output 133 [2022-11-18 20:07:48,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:48,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:48,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:48,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:48,848 INFO L321 Elim1Store]: treesize reduction 90, result has 19.6 percent of original size [2022-11-18 20:07:48,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 9 disjoint index pairs (out of 66 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 127 treesize of output 127 [2022-11-18 20:07:50,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:50,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:50,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:50,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:50,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:50,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:50,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:50,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:50,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:50,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:51,119 INFO L321 Elim1Store]: treesize reduction 368, result has 18.4 percent of original size [2022-11-18 20:07:51,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 155 [2022-11-18 20:07:53,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:53,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:53,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:53,434 INFO L321 Elim1Store]: treesize reduction 336, result has 18.4 percent of original size [2022-11-18 20:07:53,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 113 treesize of output 165 [2022-11-18 20:07:56,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:56,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:56,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:56,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:56,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:56,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:56,445 INFO L321 Elim1Store]: treesize reduction 403, result has 21.0 percent of original size [2022-11-18 20:07:56,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 139 treesize of output 206 [2022-11-18 20:08:01,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:01,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:01,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:01,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:01,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:01,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:01,682 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:08:01,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 47 [2022-11-18 20:08:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:02,188 INFO L328 TraceCheckSpWp]: Computing backward predicates...